FMF Minerals Gallery

10 cm. prehnite and calcite, with minor epidote collected 2010. (Author: vic rzonca)

10 cm. prehnite and calcite, with

10 cm. Prehnite with calcite cast after either calcite or anhydrite. Charles Keys thinks calcite. (Author: vic rzonca)

10 cm. Prehnite with calcite cast

11cm. Prehnite from Southbury Ct.. Found in basalt vugs with few points of attachments. (Author: vic rzonca)

11cm. Prehnite from Southbury Ct..

A quick cleaning, prehnite and babingtonite. about 15 cm. (Author: vic rzonca)

A quick cleaning, prehnite and bab

Amethyst and prehnite Goboboseb, Erongo, Namibia fov 45 mm (Author: ploum)

Amethyst and prehnite Goboboseb, E

Andradite (variety melanite) with Epidote and Prehnite
Kayes Region, Mali
15.5 x 25.5 x 17.5 cm / main crystal: 15.8 cm. (Author: MIM Museum)

Andradite (variety melanite) with Epidote and Prehnite

Another prehnite, replaced in collection by the other one. 2,5cm (Author: parfaitelumiere)

Another prehnite, replaced in coll

Apophylite, Prehnite Mumbai, Mumbai District, Maharashtra, India 4.4cm x 2.74cm x 2.11cm (Author: trtlman)

Apophylite, Prehnite Mumbai, Mumba

Apophyllite, Prehnite, Gyrolite, Quartz
Pune District (Poonah District), Maharashtra, India
6,5 x 5 cm (Author: Volkmar Stingl)

Apophyllite, Prehnite, Gyrolite, Quartz
Pune District (Poonah District), Maharash

Apophyllite, Prehnite, Gyrolite, Quartz
Pune District (Poonah District), Maharashtra, India
6,5 x 5 cm (Author: Volkmar Stingl)

Apophyllite, Prehnite, Gyrolite, Quartz
Pune District (Poonah District), Maharash

Apophyllite-(KF) Kandivali Quarry, Malad, Ward 38, Mumbai District, Maharashtra, India 7.5 x 9.5 cm. Colorless elongated pseudocubic crystals of apophyllite on pale green prehnite associated with snow white spheres of acicular okenite. (Author: crosstimber)

Apophyllite-(KF) Kandivali Quarry,

Babingtonite Qiaojia Co, Zhaotong Pref., Yunnan Prov., China 4.8 x 5.9 cm Tabular black babingtonite crystals associated with pale green prehnite and colorless quartz crystals (Author: crosstimber)

Babingtonite Qiaojia Co, Zhaotong

Babingtonite and prehnite, 5x7 cm.. (Author: vic rzonca)

Babingtonite and prehnite, 5x7 cm.

Babingtonite on Prehnite
Lane Quarry, Westfield, Hampden County, Massachusetts, USA
4.1 x 6.3 cm (Author: crosstimber)

Babingtonite on Prehnite
Lane

Babingtonite on Prehnite
Holyoke 'traps', Mount Holyoke Range, Hampshire County, Massachusetts, USA
12 cm. wide x 6 cm. high. (Author: vic rzonca)

Babingtonite on Prehnite
Holyo

Babingtonite with Quartz and Prehnite
Babingtonite occurrences, Qiaojia, Zhaotong Prefecture, Yunnan Province, China
17,5 x 17,5 x 18,5 cm (Author: MIM Museum)

Babingtonite with Quartz and Prehnite
Babingtonite occurrences, Qiaojia, Zhaotong Prefecture, Yunnan Provinc

Babingtonite with prehnite. Westfield, Hampden county, Massachusetts, USA 5x3 cm. (Author: vic rzonca)

Babingtonite with
Westfield, Hampde

Babingtonite, Prehnite and Quartz
Babingtonite occurrences, Qiaojia, Zhaotong Prefecture, Yunnan Province, China
100 X 67 mm (Author: Manuel Mesa)

Babingtonite, Prehnite and Quartz
Babingtonite occurrences, Qiaojia, Zhaotong Prefecture, Yunnan Province, C

Babingtonite, prehnite, quartz Qiaojia, Zhaotong, Yunnan, China 83 mm x 59 mm Close up view (Author: Carles Millan)

Babingtonite, prehnite, quartz Qia

Babingtonite, prehnite, quartz Qiaojia, Zhaotong, Yunnan, China 83 mm x 59 mm (Author: Carles Millan)

Babingtonite, prehnite, quartz Qia

Babingtonite, prehnite, quartz Qiaojia, Zhaotong, Yunnan, China 71 mm x 55 mm. Major crystal size: 22 mm on edge (Author: Carles Millan)

Babingtonite, prehnite, quartz Qia

Babingtonite, prehnite, quartz Qiaojia, Zhaotong, Yunnan, China 71 mm x 55 mm. Major crystal size: 22 mm on edge (Author: Carles Millan)

Babingtonite, prehnite, quartz Qia

Babingtonite, prehnite, quartz Qiaojia, Zhaotong, Yunnan, China 71 mm x 55 mm. Major crystal size: 22 mm on edge (Author: Carles Millan)

Babingtonite, prehnite, quartz Qia

Calcite on Prehnite from Prospect Park, Passaic Co., New Jersey formerly in the Neal Yedlin coll. Miniature specimen. (Author: Singingstone48)

Calcite on Prehnite from Prospect

Calcite on prehnite with datolite Lane Quarry, Hampden County, Massachusetts, USA 9 x 9 cm. Calcite on prehnite with minor datolite. The reverse of JPG 1698. (Author: vic rzonca)

Calcite on prehnite with datolite

Calcite on prehnite with datolite Lane Quarry, Hampden County, Massachusetts, USA 9 x9 cm. A calcite chapeau on a prehnite stalactite. (Author: vic rzonca)

Calcite on prehnite with datolite

Calcite, Prehnite Roncari Quarry. E. Granby, Connecticut, USA 4.2 x 2.8 cm (Author: Don Lum)

Calcite, Prehnite Roncari Quarry.

Calcite, Prehnite Roncari Quarry. E. Granby, Connecticut, USA 4.2 x 2.8 cm Collected 1960 ex-Carl R. Bentley (Author: Don Lum)

Calcite, Prehnite Roncari Quarry.

Calcite, Quartz, and Prehnite Roncari quarry, East Granby, Hartford Co., Connecticut Specimen size 7.2 x 4.7 x 4.5 cm. (Author: am mizunaka)

Calcite, Quartz,
Roncari quarry, E

Calcite, Quartz, Prehnite, Analcime Brandberg, Namibia 9.2 x 7.3 cm (Author: Don Lum)

Calcite, Quartz, Prehnite, Analcim

Copper Chimney Rock quarry, Bound Brook, New Jersey, USA 8.5X6.8 cm The Chimney Rock quarry was on the site of an old copper mine. A copper chunk around 90 lbs. jammed the crusher during the quarrying operation. I believe it is still in the Rutgers collection. During my collecting there, I found mainly calcites, analcimes, traces of copper minerals and a prehnite or two. (Author: John Medici)

Copper Chimney Rock quarry, Bound

Copper Northwestern Mine, Central, Keweenaw County, Michigan, USA 4.9 x 3.4 x 3.1 cm The Northwestern Mine consists of 4 shafts and at least 1 adit. The Northwestern Mining Company was organized in 1845 and then reorganized in 1848. Work continued until 1857 and resumed again in 1863. All work ceased in 1865 and was absorbed by the Central Mining Company shortly after. 313,000 lbs. of refined copper was recovered from the mine. Copper, silver, analcime, and prehnite can be found on the poor-rock piles. Ref mindat.org (Author: Don Lum)

Copper Northwestern Mine, Central,

Copper Northwestern Mine, Central, Keweenaw County, Michigan, USA 4.9 x 3.4 x 3.1 cm The Northwestern Mine consists of 4 shafts and at least 1 adit. The Northwestern Mining Company was organized in 1845 and then reorganized in 1848. Work continued until 1857 and resumed again in 1863. All work ceased in 1865 and was absorbed by the Central Mining Company shortly after. 313,000 lbs. of refined copper was recovered from the mine. Copper, silver, analcime, and prehnite can be found on the poor-rock piles. Ref. mindat.org (Author: Don Lum)

Copper Northwestern Mine, Central,

Copper on Prehnite
Adventure Mine, Greenland, Greenland Township, Ontonagon County, Michigan, USA
66 x 40 x 39 mm (Author: GneissWare)

Copper on Prehnite
Adventure M

Copper, Silver, Prehnite, Calcite
Lake Superior copper district, Keweenaw County, Michigan, USA
100 mm x 80 mm x 60 mm (Author: Robert Seitz)

Copper, Silver, Prehnite, Calcite
Lake Superior copper district, Keweenaw County, Michigan,

Copper, Silver, Prehnite, Calcite
Lake Superior copper district, Keweenaw County, Michigan, USA
100 mm x 80 mm x 60 mm (Author: Robert Seitz)

Copper, Silver, Prehnite, Calcite
Lake Superior copper district, Keweenaw County, Michigan,

Datolite and Prehnite
Prospect Park Quarry, Prospect Park, Passaic County, New Jersey, USA
9.5 x 6.2 cm (Author: Frank Imbriacco)

Datolite and Prehnite
Prospect

Datolite, Calcite, minor Prehnite Westfield, Hampden county, Massachusetts, USA 9x5 cm. (Author: vic rzonca)

Datolite, Calcite
Westfield, Hampde

Epidote and Prehnite
Kayes Region, Mali
60mm x 40mm x 45mm (Author: Philippe Durand)

Epidote and Prehnite
Kayes Reg

Epidote and Prehnite
Kayes Region, Mali
60mm x 40mm x 45mm (Author: Philippe Durand)

Epidote and Prehnite
Kayes Reg

Epidote, Prehnite, Quartz Brandberg, Namibia 28 x 26 x 11 mm (Author: Don Lum)

Epidote, Prehnite, Quartz Brandber

Epidote, Prehnite
Cadarese Quarries, Premia gneiss Quarries, Premia, Antigorio Valley, Ossola Valley, Verbano-Cusio-Ossola Province, Piedmont (Piemonte), Italy
fov 1.8 mm (Author: ploum)

Epidote, Prehnite
Cadarese Qua

Epidote, Quartz, Titanite, Orthoclase (variety adularia), Prehnite
Baveno, Maggiore Lake, Verbano-Cusio-Ossola Province, Piedmont (Piemonte), Italy
4,5 x 3,5 cm (Author: Volkmar Stingl)

Epidote, Quartz, Titanite, Orthoclase (variety adularia), Prehnite
Baveno, Maggiore Lake, Verbano-Cusio-Ossola

Epidote, Quartz, Titanite, Orthoclase (variety Adularia), Prehnite
Baveno, Maggiore Lake, Verbano-Cusio-Ossola Province, Piedmont (Piemonte), Italy
4 x 3,5 cm (Author: Volkmar Stingl)

Epidote, Quartz, Titanite, Orthoclase (variety Adularia), Prehnite
Baveno, Maggiore Lake, Verbano-Cusio-Ossola

Epidote, Quartz, Titanite, Orthoclase (variety Adularia), Prehnite
Baveno, Maggiore Lake, Verbano-Cusio-Ossola Province, Piedmont (Piemonte), Italy
4 x 3,5 cm (Author: Volkmar Stingl)

Epidote, Quartz, Titanite, Orthoclase (variety Adularia), Prehnite
Baveno, Maggiore Lake, Verbano-Cusio-Ossola

fluorapophyllite with prehnite 20-8-3.JPG (Author: John S. White)

fluorapophyllite with prehnite 20-

Fluorapophyllite-(K), Prehnite
Pune District (Poonah District), Maharashtra, India
5.1 x 2.4 cm (Author: am mizunaka)

Fluorapophyllite-(K), Prehnite
Pune District (Poonah District), Maharashtra, Indi

Fluorapophyllite-(K), Prehnite
Pune District (Poonah District), Maharashtra, India
5.1 x 2.4 cm (Author: am mizunaka)

Fluorapophyllite-(K), Prehnite
Pune District (Poonah District), Maharashtra, Indi

Green sphalerite twin with some white prehnite from Steinperf quarry, Sauerland, Hesse. The green sphalerites from Steinperf (and from the nearby location Hartenrod too) are very much sought-after - sometimes they have been cut and faceted! (Author: Andreas Gerstenberg)

Green sphalerite twin with some wh

Grossular, Diopside, Prehnite
Jeffrey Mine, Asbestos, Les Sources RCM, Estrie, Québec, Canada
7.3 x 4.4 cm (Author: am mizunaka)

Grossular, Diopside, Prehnite

Grossular, Prehnite
Jeffrey Mine, Asbestos, Les Sources RCM, Estrie, Québec, Canada
4.7 x 3.7 cm (Author: am mizunaka)

Grossular, Prehnite
Jeffrey Mi

Hedenbergite (white) epitactic on babingtonite (black) with prehnite. Sowerbutt Quarry, Prospect Park, New Jersey. RPR specimen, main babingtonite crystal is 1.2 mm along front edge. (Author: Pete Richards)

Hedenbergite (whi
Sowerbutt Quarry,

Hydroxyapophyllite-(K) and Prehnite
Virginia Crushed Stone Quarry, Loudoun County, Virginia, USA
4.8 cm (Author: dontgogreen)

Hydroxyapophyllite-(K) and Prehnite
Virginia Crushed Stone Quarry, Loudoun County, Virgini

Julgoldite (Pumpellyite Group) on Prehnite Southbury, New Haven County, Connecticut, USA Specimen size 10x10 cm. (Author: vic rzonca)

Julgoldite (Pumpe
Southbury, New Ha

Mesolite Prospect Park Quarry, Prospect Park, Passaic County, New Jersey, USA 4.8 x 4.4 cm A 3.3 cm mesolite sphere on prehnite with calcite (Author: Frank Imbriacco)

Mesolite Prospect Park Quarry, Pro

Mesolite & prehnite Prospect Park Quarry, Prospect Park, Passaic County, New Jersey, USA 15.5 x 9.9 cm A 6.7 cm mesolite sphere on prehnite, formerly in the U.S. National Museum, and pictured on p.178 of the May-June 1978 issue of the Mineralogical Record. (Author: Frank Imbriacco)

Mesolite & prehnite Prospect P

Mostly prehnite and friends. All Westfield, Massachusetts, USA Field of view 12"x12’x24". (Author: vic rzonca)

Mostly prehnite a
All Westfield, Ma

Natrolite and prehnite Millington Quarry, Bernards Township, Somerset Sounty, New Jersey, USA 8.8 x 5 cm Translucent natrolite crystals to 2.8 cm on prehnite (Author: Frank Imbriacco)

Natrolite and prehnite Millington

Natrolite with Prehnite & Laumontite Sowerbutt Quarry, Prospect Park, New Jersey, USA 6 cm across I collected this at the top of a quarry bench. When the overseer realized that numerous pockets of natrolites were there, I was ushered away from there (He collected and sold minerals on the side.). (Author: John Medici)

Natrolite with Prehnite & Laum

Okenite, Prehnite, Apophyllite, Gyrolite Mumbai (Bombay), Mumbai District (Bombay District), Maharashtra, India 6.3 x 4 cm (Author: xdxucn)

Okenite, Prehnite, Apophyllite, Gy

Okenite, Prehnite, Apophyllite, Gyrolite Mumbai (Bombay), Mumbai District (Bombay District), Maharashtra, India 6.3 x 4 cm (Author: xdxucn)

Okenite, Prehnite, Apophyllite, Gy

Pectolite Millington Quarry, Bernards Township, Somerset County, New Jersey, USA 9.5 x 6.8 cm Pink pectolite epimorphs after anhydrite to 5.5 cm with attached micro prehnite spheres (Author: Frank Imbriacco)

Pectolite Millington Quarry, Berna

Pectolite Castle Danger, the Rock Yard, Minnesota, USA About 5 X 9 X 9 cm Radiating clusters of Pectolite crystals and another mineral, possibly xonotlite, in a dark green mix of augite and plagioclase altered to prehnite. About 5 X 9 X 9 cm, the specimen is an amygdule containing the pectolite, surrounded by prehnite. This was described in a 1924 article by G. M. Schwartz of the U of MN in the American Mineralogist, pp. 83 - 88. (Author: John Nash)

Pectolite
Castle Danger, th

Prehnite Brandberg, Namibia 30 x 28 mm (Author: Pierre Joubert)

Prehnite Brandberg, Namibia 30 x 2

Prehnite Brandberg, Namibia Same as above. (Author: Pierre Joubert)

Prehnite Brandberg, Namibia Same a

Prehnite Brandberg, Namibia same as above. (Author: Pierre Joubert)

Prehnite Brandberg, Namibia same a

Prehnite Brandberg, Namibia Same as above specimen. (Author: Pierre Joubert)

Prehnite Brandberg, Namibia Same a

Prehnite Culebras Hill - Carchelejo - Jaén - Andalusia - Spain 8 x 6 cm (Author: panchito28)

Prehnite Culebras Hill - Carchelej

Prehnite Culebras Hill - Carchelejo - Jaén - Andalusia - Spain 8 x 6 cm (Author: panchito28)

Prehnite Culebras Hill - Carchelej

Prehnite Cut from a ugly larger piece (Author: parfaitelumiere)

Prehnite Cut from a ugly larger pi

Prehnite Djouga diggings, Bendougou Village, Bafoulabe Circle, Kayes Region, Mali 3.9 x 4.2 cm Two intergrown spheres of lime green prehnite on a doubly-terminated crystal of blackish-green epidote. (Author: crosstimber)

Prehnite Djouga diggings, Bendougo

Prehnite Goboboseb Mts., Brandberg area, Erongo Region, Namibia 5.5 x 7.1 cm Two mint green spheres of prehnite implanted on a calcite and quartz matrix. (Author: crosstimber)

Prehnite Goboboseb Mts., Brandberg

Prehnite Goboboseb, Erongo, Namibia fov 40 mm (Author: ploum)

Prehnite Goboboseb, Erongo, Namibi

Prehnite Lower New Street quarry, Paterson, Passaic Co., New Jersey, USA 9.99 mm (Author: Matteo_Chinellato)

Prehnite Lower New Street quarry,

Prehnite Lower New Street quarry, Paterson, New Jersey, Passaic County, New Jersey, USA 12 x 8.8 cm Prehnite epimorphs after anhydrite; a former U.S National Museum specimen (Author: Frank Imbriacco)

Prehnite Lower New Street quarry,

Prehnite Lower New Street Quarry, Paterson, Passaic County, New Jersey, USA 9 x 8.7 cm Knobby, botryoidal prehnite after anhydrite with a look similar to the best arsenian pyromorphite from Bunker Hill (Author: Frank Imbriacco)

Prehnite Lower New Street Quarry,

Prehnite Lower New Street quarry, Paterson, Passaic County, New Jersey, USA 6 x 4.7 cm Prehnite epimorphs after anhydrite (Author: Frank Imbriacco)

Prehnite Lower New Street quarry,

Prehnite Martin Marietta Quarry, Hickory, North Carolina, USA Taken at 50x, field of view is 2.25 mm wide. Prehnite (single crystals) (Author: Pete Richards)

Prehnite Martin Marietta Quarry, H

Prehnite Merelani Mines, Lelatema Mts., Manyara Region, Tanzania 4.6 x 5.7 cm An intergrown group of randomly oriented pale blue prehnite crystals. (Author: crosstimber)

Prehnite Merelani Mines, Lelatema

Prehnite Millington Quarry, Bernards Township, Somerset County, New Jersey, USA 7 x 6 cm A 2.7 cm prehnite sphere in a datolite vug (Author: Frank Imbriacco)

Prehnite Millington Quarry, Bernar

Prehnite Millington, New Jersey, USA 1.8 cm ring This one looks like it originally formed on an anhydrite (small cast is present which terminates the 2nd ring). (Author: John Medici)

Prehnite Millington, New Jersey, U

Prehnite O&G Trap Quarry, Southbury, Connecticut, USA 12 cm. across (Author: vic rzonca)

Prehnite O&G Trap Quarry, Sout

Prehnite O&G Trap Quarry, Southbury, Connecticut, USA 9 cm. tall (Author: vic rzonca)

Prehnite O&G Trap Quarry, Sout

Prehnite Oficarsa Quarry (Cerro de las Culebras), Carchelejo, Jaén, Spain 6x3 cm. Col. & Fot. Juan Hernandez. Acquired in March of 2007. (Author: supertxango)

Prehnite Oficarsa Quarry (Cerro de

Prehnite Oficarsa Quarry (Cerro de las Culebras), Carchelejo, Jaén, Spain 6x4 cm. Col. & Fot. Juan Hernandez. Acquired in March of 2007. (Author: supertxango)

Prehnite Oficarsa Quarry (Cerro de

Prehnite Oficarsa Quarry (Cerro de las Culebras), Carchelejo, Jaén, Spain 5x4 cm. Col. & Fot. Juan Hernandez. Acquired in December of 2006. (Author: supertxango)

Prehnite Oficarsa Quarry (Cerro de

Prehnite Prospect Park Quarry, Prospect Park, Passaic County, New Jersey, USA 9.8 x 8.7 cm Radiating spray of prehnite epimorphs after anhydrite (Author: Frank Imbriacco)

Prehnite Prospect Park Quarry, Pro

Prehnite Prospect Park Quarry, Prospect Park, Passaic County, New Jersey, USA 10.3 x 7.2 cm Prehnite epimorphs after anhydrite covered with lustrous calcite crystals (Author: Frank Imbriacco)

Prehnite Prospect Park Quarry, Pro

Prehnite Prospect Park Quarry, Prospect Park, Passaic County, New Jersey, USA 3.5 x 3.2 cm Prehnite sphere with micro calcite crystals (Author: Frank Imbriacco)

Prehnite Prospect Park Quarry, Pro

Prehnite Prospect Park Quarry, Prospect Park, Passaic County, New Jersey, USA 13.3 x 9.6 cm Prehnite epimorphs after anhydrite (Author: Frank Imbriacco)

Prehnite Prospect Park Quarry, Pro

Prehnite Prospect Park Quarry, Prospect Park, Passaic County, New Jersey, USA 14.2 x 8.8 cm Blue prehnite spheres to 1.3 cm with calcite, caused by a coating of pumpellyite (Author: Frank Imbriacco)

Prehnite Prospect Park Quarry, Pro

Prehnite Sgurr nan Cearcall, nr Glen Brittle, Isle of Skye, Scotland, UK 12cm x 7cm x 5cm The nicest prehnite specimen I have found, collected from a random small boulder on my last visit - I was very pleased ! The colour is a stronger green than the last specimen photo, but it is very difficult to capture. Self-collected 2011 (Author: Mike Wood)

Prehnite Sgurr nan Cearcall, nr Gl

Prehnite Sgurr nan Cearcall, nr Glen Brittle, Isle of Skye, Scotland, UK FOV 7cm x 5cm Nice green and quite lustrous prehnite crystals forming thick crusts in very hard basalt. Open and vuggy material, often with little epimorphs(?) or casts of prehnite on calcite (presumably) to 3mm across, but the casts are hollow. Self-collected 1997 (Author: Mike Wood)

Prehnite Sgurr nan Cearcall, nr Gl

Prehnite Sgurr nan Cearcall, nr Glen Brittle, Isle of Skye, Scotland, UK 6cm x 4cm x 5cm deep ’Stalactitic’ formation of white prehnite on very hard basalt. The prehnite has most likely replaced some thin crystals of another, probably zeolitic mineral like laumontite. Self-collected 1997 (Author: Mike Wood)

Prehnite Sgurr nan Cearcall, nr Gl

Prehnite Southbury, New Haven County, Connecticut, USA 12 x 14 cm. vug. (Author: vic rzonca)

Prehnite Southbury, New Haven Coun

Prehnite Southbury, New Haven County, Connecticut, USA 20 cm Green, yellow and almost blue. Poor quality image. (Author: vic rzonca)

Prehnite Southbury, New Haven Coun

Prehnite Southbury, New Haven County, Connecticut, USA 20 cm (Author: vic rzonca)

Prehnite Southbury, New Haven Coun

Prehnite Southbury, New Haven County, Connecticut, USA 20 cm This 20 cm. vesicle was one of hundreds I walked over, at twilight, in a blast pile. Of course I didn’t know what I had until I broke it open. To late, the pile was gone the next day. (Author: vic rzonca)

Prehnite Southbury, New Haven Coun

Prehnite Upper New Street Quarry, Paterson, Passaic County, New Jersey, USA 9 x 9 cm A 6 cm prehnite epimorph after anhydrite centered among smaller epimorphs (Author: Frank Imbriacco)

Prehnite Upper New Street Quarry,

Prehnite Vulkan quarry, Urenkopf, Hausach, Black Forest, Baden-Württemberg, Germany 6,5 x 4 cm (Author: Andreas Gerstenberg)

Prehnite Vulkan quarry, Urenkopf,

Prehnite Weldon Quarry, Watchung, Somerset County, New Jersey, USA 12.5 x 11 cm Prehnite epimorphs after glauberite from a find in 1987; former Herb Obodda Collection (Author: Frank Imbriacco)

Prehnite Weldon Quarry, Watchung,

Prehnite Sowerbutt Quarry, Prospect Park, New Jersey, USA 6 cm across (back of the natrolite specimen). A "floater" - most trap rock minerals in this North Jersey area are much harder to collect intact! (Author: John Medici)

Prehnite Sowerbutt Quarry, Prospe

Prehnite 96 x 75 x 50 mm, O & G Quarry, Southbury, Connecticut, USA (Author: nurbo)

Prehnite 96 x 75 x 50 mm, O &

Prehnite after Calcite
Dahisar Quarry, Mumbai (Bombay), Mumbai District, Maharashtra, India
210 x 75 x 55 mm (Author: Rob Schnerr)

Prehnite after Calcite
Dahisar

Prehnite after Laumontite
Malad Quarry, Malad, Mumbai (Bombay), Mumbai District, Maharashtra, India
4.2 x 10.0 x 20.0 cm (Author: crosstimber)

Prehnite after Laumontite
Mala

Prehnite after Laumontite
Pathanwadi Quarry, Mumbai (Bombay), Mumbai District, Maharashtra, India
69 mm x 49 mm x 55 mm (Author: Don Lum)

Prehnite after Laumontite
Path

Prehnite after Laumontite
Malad Quarry, Malad, Mumbai (Bombay), Mumbai District, Maharashtra, India
7.2 x 5.0 cm (Author: Michael Shaw)

Prehnite after Laumontite
Mala

Prehnite and Augite
Oficarsa Quarry, De las Culebras Hill, Carchelejo, Cárcheles, Comarca Sierra Mágina, Jaén, Andalusia, Spain
81x59x43mm (Author: Carlos Pareja)

Prehnite and Augite
Oficarsa Q

Prehnite and babingtonite. (Author: vic rzonca)

Prehnite and babingtonite.

Prehnite and calcite McBride Avenue and Browertown Road Pumping Station, Woodland Park, Passaic Couny, New Jersey, USA 12 x 10 cm From an excavation in 1986 which produced countless numbers of specimens of prehnite after anhydrite with a look different from those of other nearby localities. (Author: Frank Imbriacco)

Prehnite and calcite McBride Avenu

Prehnite and calcite Prospect Park Quarry, Prospect Park, Passaic County, New Jersey, USA 7.9 x 6.9 cm Prehnite spheres to 1.7 cm with micro calcite crystals (Author: Frank Imbriacco)

Prehnite and calcite Prospect Park

Prehnite and calcite Upper New Street quarry, Paterson, Passaic County, New Jersey, USA 6.9 x 7 cm Prehnite spheres to 1.8 cm on calcite (Author: Frank Imbriacco)

Prehnite and calcite Upper New Str

Prehnite and calcite Weldon Quarry, Watchung, Somerset County, New Jersey, USA 12.5 x 8.6 cm Calcite crystals to 3.2 cm on prehnite epimorphs after glauberite (Author: Frank Imbriacco)

Prehnite and calcite Weldon Quarry

Prehnite and calcite Weldon Quarry, Watchung, Somerset County, New Jersey 8.2 x 6.5 cm A prehnite coated calcite rhombohedron with prehnite after glauberite epimorphs, sandwiched by a 6 cm second generation calcite crystal (Author: Frank Imbriacco)

Prehnite and calcite Weldon Quarry

Prehnite and Epidote; Kayes region, Mali. Diameter 18-20mm, 14g. GN’s collection id 09MLPE001. Taken in direct sunlight. Stereo pair. (Author: Gerhard Niklasch)

Prehnite and Epid
Diameter 18-20mm,

Prehnite and Epidote; Kayes region, Mali. Diameter 18-20mm, 14g. GN’s collection id 09MLPE001. Taken in direct sunlight. (Author: Gerhard Niklasch)

Prehnite and Epid
Diameter 18-20mm,

Prehnite and Epidote; Kayes region, Mali. Diameter 18-20mm, 14g. GN’s collection id 09MLPE001. Taken in direct sunlight. (Author: Gerhard Niklasch)

Prehnite and Epid
Diameter 18-20mm,

Prehnite and Epidote
Goboboseb Mountains, Brandberg area, Erongo Region, Namibia
64mm x 76mm x 20mm (Author: Heimo Hellwig)

Prehnite and Epidote
Goboboseb

Prehnite and Epidote
Goboboseb Mountains, Brandberg area, Erongo Region, Namibia
64mm x 76mm x 20mm (Author: Heimo Hellwig)

Prehnite and Epidote
Goboboseb

Prehnite and Epidote
Goboboseb Mountains, Brandberg area, Erongo Region, Namibia
64mm x 76mm x 20mm (Author: Heimo Hellwig)

Prehnite and Epidote
Goboboseb

Prehnite and Epidote
Kayes Region, Mali
50 mm x 40 mm x 30 mm (Author: Dany Mabillard)

Prehnite and Epidote
Kayes Reg

Prehnite and Pectolite
Prospect Park Quarry, Prospect Park, Passaic County, New Jersey, USA
6.1 x 5.7 x 3.1 cm (Author: Michael Shaw)

Prehnite and Pectolite
Prospec

Prehnite and Quartz
Brandberg area, Erongo Region, Namibia
H: 6 cm x W: 12 cm x D: 7.5 cm (Author: Adrian Pripoae)

Prehnite and Quartz
Brandberg

Prehnite and Quartz
Goboboseb Mountains, Brandberg area, Erongo Region, Namibia
110mm x 74mm x 35mm (Author: Heimo Hellwig)

Prehnite and Quartz
Goboboseb

Prehnite and Quartz
Goboboseb Mountains, Brandberg area, Erongo Region, Namibia
110mm x 74mm x 35mm (Author: Heimo Hellwig)

Prehnite and Quartz
Goboboseb

Prehnite and Quartz
Goboboseb Mountains, Brandberg area, Erongo Region, Namibia
100 x 89 x 27 mm (Author: Pierre Joubert)

Prehnite and Quartz
Goboboseb

Prehnite and Wollastonite
Jeffrey Mine, Asbestos, Les Sources RCM, Estrie, Québec, Canada
5.7 x 3.6 x 2.3 cm (Author: Michael Shaw)

Prehnite and Wollastonite
Jeff

Prehnite cast after anhydrite Lane Quarry, Hampden County, Massachusetts, USA !2 x 6 cm. Reverse (Author: vic rzonca)

Prehnite cast after anhydrite Lane

Prehnite cast after anhydrite Lane Quarry, Hampden County, Massachusetts, USA !2 x 6 cm. (Author: vic rzonca)

Prehnite cast after anhydrite Lane

Prehnite casts after anhydrite. Size is 15 cm. x 17 cm. saved from the crusher last week. Holyoke Trapps, Western Mass. USA (Author: vic rzonca)

Prehnite casts after anhydrite. Si

Prehnite Epidote
Djouga diggings, Bendougou village, Commune Diakon, Arrondissement Diakon, Bafoulabé Circle, Kayes Region, Mali
6,7 x 5,5 x 4,5 cm. / 153 g (Author: DanovskiM)

Prehnite Epidote
Djouga diggin

Prehnite epimorphs of laumontite Knife River, St. Louis County, Minnesota, USA 6 X 5 X 4 cm Beautiful orange prehnite epimorphs of laumontite. (Author: John Nash)

Prehnite epimorph
Knife River, St.

Prehnite epimorphic on Anhydrite with Laumontite
Prospect Park Quarry, Prospect Park, Passaic County, New Jersey, USA
27.5 x 19.8 x 14.2 cm (Author: Frank Imbriacco)

Prehnite epimorphic on Anhydrite with Laumontite
Prospect Park Quarry, Prospect Park, Passaic Coun

Prehnite epipmorphs of laumontite Knife River, St. Louis County, Minnesota, USA 5 cm field of view (Author: John Nash)

Prehnite epipmorp
Knife River, St.

Prehnite on calcite
Diabase Quarry, Hartenrod, Gladenbach, Dillenburg, Lahn-Dill-Kreis District, Gießen Region, Hesse/Hessen, Germany
Specimen size 18 cm (Author: Tobi)

Prehnite on calcite
Diabase Qu

Prehnite on Epidote - Djouga Diggings - Region De Kayes - Mali - large miniature (7.5 x 3.2 x 2.2 cm) (Author: jaysminerals)

Prehnite on Epidote - Djouga Diggi

Prehnite on Epidote
Djouga diggings, Bendougou village, Commune Diakon, Arrondissement Diakon, Bafoulabé Circle, Kayes Region, Mali
3.0 x 4.5 cm (Author: crosstimber)

Prehnite on Epidote
Djouga dig

Prehnite on Epidote
Holyoke 'traps', Mount Holyoke Range, Hampshire County, Massachusetts, USA
6 cm wide x 3 cm high x 8 cm deep (front to back). (Author: vic rzonca)

Prehnite on Epidote
Holyoke 't

Prehnite ps. after laumontite Padanvadi Quarry, Mumbai District, Maharashtra, India 5.5 x 9.5 cm. Pale-green, hollow, straws of prehnite to 8 cm epimorphing laumontite. Small pseudocubic apophyllite-KF) crystals are liberally scattered over the surfaces of the prehnite. (Author: crosstimber)

Prehnite ps. after laumontite Pada

Prehnite ps. after Laumontite
Pathanwadi Quarry, Mumbai (Bombay), Mumbai District, Maharashtra, India
6.2 x 4.6 x 3.5 cm (Author: Michael Shaw)

Prehnite ps. after Laumontite

Prehnite ps. anhydrite Lane Quarry, Westfield, Massachusetts, USA 3.3 x 6.0 cm. (Author: crosstimber)

Prehnite ps. anhy
Lane Quarry, West

Prehnite pseudomorph after Anhydrite
Lane Quarry, Westfield, Hampden County, Massachusetts, USA
3.3 x 5.1 cm (Author: crosstimber)

Prehnite pseudomorph after Anhydrite
Lane Quarry, Westfield, Hampden County, Massachuset

Prehnite pseudomorphs after Laumontite
Lonavale (Lonavala), Pune District (Poonah District), Maharashtra, India
260 x 105 x 70 mm (Author: Rob Schnerr)

Prehnite pseudomorphs after Laumontite
Lonavale (Lonavala), Pune District (Poonah District), Maharasht

Prehnite single crystal 1 mm long. Virginia Crushed Stone Company Quarry, Centerville, Virginia. RPR uncataloged specimen. (Author: Pete Richards)

Prehnite single crystal 1 mm long.

Prehnite with Albite and Epidote
La Combe de la Selle, Saint-Christophe-en-Oisans, Le Bourg d'Oisans Comune, Isère, Auvergne-Rhône-Alpes, France
Specimen size: 4.3 × 3.4 × 2.9 cm / main crystal s (Author: Jordi Fabre)

Prehnite with Albite and Epidote
La Combe de la Selle, Saint-Christophe-en-Oisans, Le Bourg d'Oisans Comune, Isère, Auvergne-Rhône-Alpes, Fra

Prehnite with Augite Oficarsa Quarry (Cerro de las Culebras) – Carchelejo – Jaén – Andalusia - Spain. 3,7cm (Author: DAni)

Prehnite with Aug
Oficarsa Quarry (

Prehnite with Augite Oficarsa Quarry (Cerro de las Culebras) – Carchelejo – Jaén – Andalusia - Spain. 3,7cm (Author: DAni)

Prehnite with Augite Oficarsa Quar

Prehnite with Epidote Fairfax quarry, Centreville, Fairfax County, Virginia, USA 9.8 cm tall. Photo & Collection: John S. White (Author: Jordi Fabre)

Prehnite with Epidote Fairfax quar

Prehnite with Epidote
Kayes Region, Mali
31 x 25 x 8 cm (Author: MIM Museum)

Prehnite with Epidote
Kayes Re

Prehnite with Epidote
Kayes Region, Mali
6.5 x 10 x 5.5 cm (Author: MIM Museum)

Prehnite with Epidote
Kayes Re

Prehnite with Epidote
Kayes Region, Mali
6.5 x 10 x 5.5 cm (Author: MIM Museum)

Prehnite with Epidote
Kayes Re

Prehnite with quartz China 4.5 x 5.5 x 1 cm. (Author: barbie90)

Prehnite with qua
China

Prehnite with quartz China 4.5 x 5.5 x 1 cm. (Author: barbie90)

Prehnite with quartz China 4.5 x 5

Prehnite with quartz China 4.5 x 5.5 x 1 cm. (Author: barbie90)

Prehnite with quartz China 4.5 x 5

Prehnite with Quartz 11 x 5 x 5 cm. (Author: taoxue)

Prehnite with Quartz 11 x 5 x 5 cm

Prehnite with Quartz 12 x 5 x 6 cm. (Author: taoxue)

Prehnite with Quartz 12 x 5 x 6 cm

Prehnite, 10 cm. in diameter vug, Southbury, CT. (Author: vic rzonca)

Prehnite, 10 cm. in diameter vug,

Prehnite, 10x12 cm. (Author: vic rzonca)

Prehnite, 10x12 cm.

Prehnite, calcite with minor datolite. Lane / Hampden Quarries, Westfield, Massachusetts, USA 14x10 cm. (Author: vic rzonca)

Prehnite, calcite
Lane / Hampden Qu

Prehnite, Calcite
Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region, Tanzania
47 mm x 47 mm x 42 mm (Author: Don Lum)

Prehnite, Calcite
Merelani Hil

Prehnite, Epidote Djouga, Benduko, Keyes Region, Mali 6.7 x 6.0 x 4.9 cm (Author: Don Lum)

Prehnite, Epidote Djouga, Benduko,

Prehnite, epidote and quartz Brandberg, Namibia 27 x 20 x 13 mm Same as above. (Author: Pierre Joubert)

Prehnite, epidote and quartz Brand

Prehnite, epidote and quartz Brandberg, Namibia 27 x 20 x 13 mm Same as above. (Author: Pierre Joubert)

Prehnite, epidote and quartz Brand

Prehnite, epidote and quartz Brandberg, Namibia 27 x 20 x 13 mm (Author: Pierre Joubert)

Prehnite, epidote and quartz Brand

Prehnite, Epidote, Fluorite
Quarries on gneiss, Arvigo, Calanca Valley, Mesolcina Valley, Grischun (Grisons; Graubünden), Switzerland
2,5 x 2 cm (Author: Volkmar Stingl)

Prehnite, Epidote, Fluorite
Qu

Prehnite, Epidote, Fluorite
Quarries on gneiss, Arvigo, Calanca Valley, Mesolcina Valley, Grischun (Grisons; Graubünden), Switzerland
2,5 x 2 cm (Author: Volkmar Stingl)

Prehnite, Epidote, Fluorite
Qu

Prehnite, Epidote
Djouga diggings, Bendougou village, Commune Diakon, Arrondissement Diakon, Bafoulabé Circle, Kayes Region, Mali
68 mm x 55 mm x 30 mm (Author: Don Lum)

Prehnite, Epidote
Djouga diggi

Prehnite, Epidote
Bendougou village, Commune Diakon, Arrondissement Diakon, Bafoulabé Circle, Kayes Region, Mali
74 x 66 mm (Author: Sante Celiberti)

Prehnite, Epidote
Bendougou vi

Prehnite, Feldspar
Imilchil area, Anti-Atlas, Er Rachidia Province, Drâa-Tafilalet Region, Morocco
155 mm x 130 mm x 90 mm (Author: Robert Seitz)

Prehnite, Feldspar
Imilchil ar

Prehnite, Feldspar
Imilchil area, Anti-Atlas, Er Rachidia Province, Drâa-Tafilalet Region, Morocco
155 mm x 130 mm x 90 mm (Author: Robert Seitz)

Prehnite, Feldspar
Imilchil ar

Prehnite, Graphite
Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region, Tanzania
2,5 x 1,5 cm (Author: Volkmar Stingl)

Prehnite, Graphite
Merelani Hi

Prehnite, Laumontite
Ranalt, Neustift im Stubaital, Stubai Valley, Innsbruck-Land District, North Tyrol, Tyrol/Tirol, Austria
FoV 1,4 x 1,0 cm (Author: Volkmar Stingl)

Prehnite, Laumontite
Ranalt, N

Prehnite, minor copper Knife River, St. Louis County, Minnesota, USA 8 X 6 X 5 cm Gemmy light green prehnite, some copper inside. (Author: John Nash)

Prehnite, minor c
Knife River, St.

Prehnite, pectolite, calcite Rauschermühle quarry, Niederkirchen, Rhineland-Palatinate, Germany 9,5 x 6,5 cm Old find from the 1950s. (Author: Andreas Gerstenberg)

Prehnite, pectolite, calcite Rausc

Prehnite, Quartz and Babingtonite
Babingtonite occurrences, Qiaojia, Zhaotong Prefecture, Yunnan Province, China
105 x 103 mm (Author: Manuel Mesa)

Prehnite, Quartz and Babingtonite
Babingtonite occurrences, Qiaojia, Zhaotong Prefecture, Yunnan Province, C

Prehnite, Quartz, Babingtonite
Hongquizhen Quarry, Meigu, Liangshan Autonomous Prefecture, Sichuan Province, China
5,5 x 3,5 cm (Author: Volkmar Stingl)

Prehnite, Quartz, Babingtonite
Hongquizhen Quarry, Meigu, Liangshan Autonomous Prefecture, Sichuan Province, Chin

Prehnite, Quartz
Goboboseb Mountains, Brandberg area, Erongo Region, Namibia
55x50mm (Author: Heimo Hellwig)

Prehnite, Quartz
Goboboseb Mou

Prehnite, Quartz
Goboboseb Mountains, Brandberg area, Erongo Region, Namibia
55x50mm (Author: Heimo Hellwig)

Prehnite, Quartz
Goboboseb Mou

Prehnite, Quartz
Goboboseb Mountains, Brandberg area, Erongo Region, Namibia
50x35mm (Author: Heimo Hellwig)

Prehnite, Quartz
Goboboseb Mou

Prehnite, Quartz
Goboboseb Mountains, Brandberg area, Erongo Region, Namibia
50x35mm (Author: Heimo Hellwig)

Prehnite, Quartz
Goboboseb Mou

Prehnite, Quartz
Ranalt, Neustift im Stubaital, Stubai Valley, Innsbruck-Land District, North Tyrol, Tyrol/Tirol, Austria
FoV 1,4 x 1,0 cm (Author: Volkmar Stingl)

Prehnite, Quartz
Ranalt, Neust

Prehnite, Stilbite
Ranalt, Neustift im Stubaital, Stubai Valley, Innsbruck-Land District, North Tyrol, Tyrol/Tirol, Austria
FoV 1,4 x 1,0 cm (Author: Volkmar Stingl)

Prehnite, Stilbite
Ranalt, Neu

Prehnite, Tanzania, 1.8 x 1.7 x 1.5 cm (Author: Jim)

Prehnite, Tanzania, 1.8 x 1.7 x 1.

Prehnite. Minera I Quarry. Lebrija. Sevilla. Andalusia. Spain. 8 cm. (Author: nimfiara)

Prehnite. Minera I Quarry. Lebrija

Prehnite. Minera I Quarry. Lebrija. Sevilla. Andalusia. Spain. 15 cm (Author: nimfiara)

Prehnite. Minera I Quarry. Lebrija

Prehnite. Oficarsa Quarry. Carchelejo. Jaén. Andalusia. Spain. 7 cm. (Author: nimfiara)

Prehnite. Oficarsa Quarry. Carchel

Prehnite. Oficarsa Quarry. Carchelejo. Jaén. Andalusia. Spain. 8 cm (Author: nimfiara)

Prehnite. Oficarsa Quarry. Carchel

Prehnite Arlington Quarry Leesburg Loudoun Co,, Virginia United States of America 86 x 68 x 21 cm overall with 5 mm crystals (Author: GneissWare)

Prehnite
Arlington Quarry

Prehnite Knife River, St. Louis County, Minnesota, USA Field of view about 6 cm The light blue iridescence on this orange prehnite is stunning. (Author: John Nash)

Prehnite
Knife River, St.

Prehnite Knife River, St. Louis County, Minnesota, USA 9 X 7 X 4 Orange iridescent prehnite. So lovely in person, look at the close-up! Another one-time find, one boulder from the river, discovered by my son Greg. (Author: John Nash)

Prehnite
Knife River, St.

Prehnite Knife River, St. Louis County, Minnesota, USA Field of view 2.5 cm Most remarkable iridescent orange prehnite, metallic blue and purple flashes are amazing in person. I’ve found only a few examples in 5 years of visiting the locale. (Author: John Nash)

Prehnite
Knife River, St.

Prehnite Knife River, St. Louis County, Minnesota, USA Field of view 4.5 cm (Author: John Nash)

Prehnite
Knife River, St.

Prehnite Knife River, St. Louis County, Minnesota, USA Field of view 11 cm (Author: John Nash)

Prehnite
Knife River, St.

Prehnite Knife River, St. Louis County, Minnesota, USA 19.5 X 10 X 10 cm approximately This orange prehnite shows partial casts after laumontite, the largest cast is about 2 cm. The prehnite glitters with gold and some blue iridescence. (Author: John Nash)

Prehnite
Knife River, St.

Prehnite Miage Glacier, Veny Valley, Monte Bianco Massif (Mont Blanc Massif), Courmayeur, Aosta Valley, Italy 38.16x32.56 mm green-dark Prehnite. Ex Wes Parker Collection (Author: Matteo_Chinellato)

Prehnite
Miage Glacier, Ve

Prehnite New Street Quarry Paterson, New Jersey 6.3cm x 3.7cm (Author: rweaver)

Prehnite
New Street Quarry

Prehnite O & G Quarry, Southbury, Connecticut, USA 96 x 75 x 50 mm Photo and Specimen: nurbo (Author: Jordi Fabre)

Prehnite
O & G Quarry,

Prehnite
Imilchil area, Anti-Atlas, Er Rachidia Province, Drâa-Tafilalet Region, Morocco
100 x 77 mm (Author: Manuel Mesa)

Prehnite
Imilchil area, Anti-A

Prehnite
Goboboseb Mountains, Brandberg area, Erongo Region, Namibia
5.1 x 8.2 cm (Author: crosstimber)

Prehnite
Goboboseb Mountains,

Prehnite
Goboboseb Mountains, Brandberg area, Erongo Region, Namibia
5.5 x 7.0 cm (Author: Michael Shaw)

Prehnite
Goboboseb Mountains,

Prehnite
Lane & Son traprock Quarries, Westfield, Hampden County, Massachusetts, USA
6.4 x 12.3 cm (Author: crosstimber)

Prehnite
Lane & Son traprock Q

Prehnite
Jeffrey Mine, Asbestos, Les Sources RCM, Estrie, Québec, Canada
9,5 x 6,5 x 9,0 cm (Author: MIM Museum)

Prehnite
Jeffrey Mine, Asbesto

Prehnite
Goboboseb Mountains, Brandberg area, Erongo Region, Namibia
Specimen size 7 cm, largest prehnite "ball&qu (Author: Tobi)

Prehnite
Goboboseb Mountains,

Prehnite
Jeffrey Mine, Asbestos, Les Sources RCM, Estrie, Québec, Canada
7,0 x 4,5 x 7,5 cm (Author: MIM Museum)

Prehnite
Jeffrey Mine, Asbesto

Prehnite
Bendougou village, Commune Diakon, Arrondissement Diakon, Bafoulabé Circle, Kayes Region, Mali
2.1 x 2.3 cm (Author: crosstimber)

Prehnite
Bendougou village, Co

Prehnite
Schönlautenbach, Idar-Oberstein, Birkenfeld, Rhineland-Palatinate/Rheinland-Pfalz, Germany
Specimen size 12-15 cm (Author: Tobi)

Prehnite
Schönlautenbach, Ida

Prehnite
Jebel Melh, Bou Arfa, Figuig Province, Oriental Region, Morocco
9 cm (Author: Enrique Llorens)

Prehnite
Jebel Melh, Bou Arfa,

Prehnite
O&G Southbury Quarry, Southbury, New Haven County, Connecticut, USA
2.2 x 2.5 cm (Author: crosstimber)

Prehnite
O&G Southbury Quarry,

Prehnite
Malad, Mumbai (Bombay), Mumbai District, Maharashtra, India
120mm x 110mm x 30mm (Author: Philippe Durand)

Prehnite
Malad, Mumbai (Bombay

Prehnite
Goboboseb Mountains, Brandberg area, Erongo Region, Namibia
68mm x 46mm x 36mm (Author: Heimo Hellwig)

Prehnite
Goboboseb Mountains,

Prehnite
Goboboseb Mountains, Brandberg area, Erongo Region, Namibia
68mm x 46mm x 36mm (Author: Heimo Hellwig)

Prehnite
Goboboseb Mountains,

Prehnite
Andesite Quarry, Kreimbach-Kaulbach, Lauterecken-Wolfstein, Kusel, Rhineland-Palatinate/Rheinland-Pfalz, Germany
17 mm (Author: Gerhard Brandstetter)

Prehnite
Andesite Quarry, Krei

Prehnite
O&G Woodbury Quarry, Orenaug Hills, Woodbury, Litchfield County, Connecticut, USA
2.4 x 2.5 cm (Author: crosstimber)

Prehnite
O&G Woodbury Quarry,

Prehnite
Lower New Street Quarry, Paterson, Passaic County, New Jersey, USA
1.7 x 2.9 cm (Author: crosstimber)

Prehnite
Lower New Street Quar

Prehnite
Oficarsa Quarry, De las Culebras Hill, Carchelejo, Cárcheles, Comarca Sierra Mágina, Jaén, Andalusia, Spain
88x48x34mm (Author: Carlos Pareja)

Prehnite
Oficarsa Quarry, De l

Prehnite
Oficarsa Quarry, De las Culebras Hill, Carchelejo, Cárcheles, Comarca Sierra Mágina, Jaén, Andalusia, Spain
20x20x10mm (Author: Carlos Pareja)

Prehnite
Oficarsa Quarry, De l

Prehnite
Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region, Tanzania
4.6 x 5.1 x 7.5 cm (Author: crosstimber)

Prehnite
Merelani Hills, Lelat

Prehnite
Roncari Quarry, East Granby, Hartford County, Connecticut, USA
5.2 x 6.8 cm (Author: crosstimber)

Prehnite
Roncari Quarry, East

Prehnite
Roncari Quarry, East Granby, Hartford County, Connecticut, USA
5.2 x 6.8 cm (Author: crosstimber)

Prehnite
Roncari Quarry, East

Prehnite
O&G Southbury Quarry, Southbury, New Haven County, Connecticut, USA
5.5 x 8.5 x 11.2 cm (Author: crosstimber)

Prehnite
O&G Southbury Quarry,

Prehnite
Washington Pass, Golden Horn Batholith, Okanogan County, Washington, USA
FOV = 4.0 mm (Author: Doug)

Prehnite
Washington Pass, Gold

Prehnite
Delà Mount, Champorcher, Aosta Valley (Val d'Aosta), Italy
106 x 45 mm (Author: Sante Celiberti)

Prehnite
Delà Mount, Champorc

Prehnite
Burgberg Quarry (Trautvetter Quarry), Marburg-Biedenkopf District, Gießen Region, Hesse/Hessen, Germany
approx. 25 cm (Author: Tobi)

Prehnite
Burgberg Quarry (Trau

Prehnite
Imilchil area, Anti-Atlas, Er Rachidia Province, Drâa-Tafilalet Region, Morocco
14x12x7 cm (Author: Joseph DOliveira)

Prehnite
Imilchil area, Anti-A

Prehnite
Petrognano Quarry, San Romano Garfagnana, Lucca Province, Tuscany, Italy
61 x 40 mm (Author: Sante Celiberti)

Prehnite
Petrognano Quarry, Sa

Prehnite
Imilchil area, Anti-Atlas, Er Rachidia Province, Drâa-Tafilalet Region, Morocco
4,7 cm x 6 cm (Author: Enrique Llorens)

Prehnite
Imilchil area, Anti-A

Prehnite
Lower New Street Quarry, Paterson, Passaic County, New Jersey, USA
7.1 x 5.3 cm (Author: Michael Shaw)

Prehnite
Lower New Street Quar

Prehnite
Pirola Lake, Malenco Valley (Valmalenco), Valltelina, Sondrio Province, Lombardy, Italy
3,5 x 2,5 cm (Author: Volkmar Stingl)

Prehnite
Pirola Lake, Malenco

Prehnite
Pirola Lake, Malenco Valley (Valmalenco), Valltelina, Sondrio Province, Lombardy, Italy
3,5 x 2,5 cm (Author: Volkmar Stingl)

Prehnite
Pirola Lake, Malenco

Prehnite
Jeffrey Mine, Asbestos, Les Sources RCM, Estrie, Québec, Canada
5.5 x 4 x 5.5 cm / main crystal: 3.0 cm (Author: MIM Museum)

Prehnite
Jeffrey Mine, Asbesto

Prehnite
Jeffrey Mine, Asbestos, Les Sources RCM, Estrie, Québec, Canada
5.5 x 4 x 5.5 cm / main crystal: 3.0 cm (Author: MIM Museum)

Prehnite
Jeffrey Mine, Asbesto

Prehnite
Takat, Imilchil, Anti-Atlas, Er Rachidia Province, Drâa-Tafilalet Region, Morocco
31 mm x 25 mm x 24 mm (Author: Don Lum)

Prehnite
Takat, Imilchil, Anti

Prehnite
Prospect Park Quarry, Prospect Park, Passaic County, New Jersey, USA
2.9 x 1.8 cm (Author: Michael Shaw)

Prehnite
Prospect Park Quarry,

Prehnite
Jeffrey Mine, Asbestos, Les Sources RCM, Estrie, Québec, Canada
5.7 x 3.6 x 2.3 cm (Author: Michael Shaw)

Prehnite
Jeffrey Mine, Asbesto

Prehnite
Prospect Park Quarry, Prospect Park, Passaic County, New Jersey, USA
7.0 x 6.6 x 4.4 cm (Author: Michael Shaw)

Prehnite
Prospect Park Quarry,

Prehnite
Paterson, Passaic County, New Jersey, USA
12.8 x 10.7 cm (Author: Michael Shaw)

Prehnite
Paterson, Passaic Cou

Pumpellyite, Prehnite; Quartz; Calcite
Goboboseb Mountains, Brandberg area, Erongo Region, Namibia
FOV +- 3 cm (Author: Pierre Joubert)

Pumpellyite, Prehnite; Quartz; Calcite
Goboboseb Mountains, Brandberg area, Erongo Region

Pumpellyite, Prehnite; Quartz; Calcite
Goboboseb Mountains, Brandberg area, Erongo Region, Namibia
FOV +- 4 cm (Author: Pierre Joubert)

Pumpellyite, Prehnite; Quartz; Calcite
Goboboseb Mountains, Brandberg area, Erongo Region

Pumpellyite, Prehnite; Quartz; Calcite
Goboboseb Mountains, Brandberg area, Erongo Region, Namibia
61 x 60 x 36 mm (Author: Pierre Joubert)

Pumpellyite, Prehnite; Quartz; Calcite
Goboboseb Mountains, Brandberg area, Erongo Region

Quartz Brandberg, Namibia 107 x 60 x 55 mm (crystal size 86 x 22 x 17 mm) Quartz with water. Quartz crystal on basalt matrix with prehnite and bubbles in water. (Author: Pierre Joubert)

Quartz Brandberg, Namibia 107 x 60

Quartz Brandberg, Namibia 94 x 91 x 76 mm (main crystal 72 x 29 x 22 mm Quartz with prehnite on basalt matrix (Author: Pierre Joubert)

Quartz Brandberg, Namibia 94 x 91

Quartz and Prehnite
Goboboseb Mountains, Brandberg area, Erongo Region, Namibia
15mm x 26mm x 18mm (Author: Heimo Hellwig)

Quartz and Prehnite
Goboboseb

Quartz and Prehnite
Goboboseb Mountains, Brandberg area, Erongo Region, Namibia
15mm x 26mm x 18mm (Author: Heimo Hellwig)

Quartz and Prehnite
Goboboseb

Quartz and Prehnite
Goboboseb Mountains, Brandberg area, Erongo Region, Namibia
38mm x 67mm x 30mm (Author: Heimo Hellwig)

Quartz and Prehnite
Goboboseb

Quartz and Prehnite
Goboboseb Mountains, Brandberg area, Erongo Region, Namibia
35 x 32 x 27 mm (Author: Pierre Joubert)

Quartz and Prehnite
Goboboseb

Quartz and Prehnite
Goboboseb Mountains, Brandberg area, Erongo Region, Namibia
35 x 32 x 27 mm (Author: Pierre Joubert)

Quartz and Prehnite
Goboboseb

Quartz and Prehnite
Goboboseb Mountains, Brandberg area, Erongo Region, Namibia
35 x 32 x 27 mm (Author: Pierre Joubert)

Quartz and Prehnite
Goboboseb

Quartz, prehnite Brandberg Area, Erongo Region, Namibia Specimen size 8 cm, main quartz measures 6 cm Quartz (colourless with a purple amethyst phantom inside) and small prehnite ball attached (Author: Tobi)

Quartz, prehnite Brandberg Area, E

Quartz, Prehnite on Epidote
Goboboseb Mountains, Brandberg area, Erongo Region, Namibia
130x80mm (Author: Heimo Hellwig)

Quartz, Prehnite on Epidote
Go

Quartz, Prehnite on Epidote
Goboboseb Mountains, Brandberg area, Erongo Region, Namibia
130x80mm (Author: Heimo Hellwig)

Quartz, Prehnite on Epidote
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