FMF Minerals Gallery

12 cm wide Plate of sharp acanthite pseudos after argentite, San Agustín Mine, Reforma, Pachuca (Author: Peter Megaw)

12 cm wide Plate of sharp acanthit

1906 shot looking down at west landing of bridge (Author: Peter Megaw)

1906 shot looking down at west lan

Acanthite ps Argentite on quartz, Guanajuato Mexico: small cabinet. Joel Roberts Poinsett piece, American Philosophical Society to Philadelphia Academy of Science (Author: Peter Megaw)

Acanthite ps Argentite on quartz,

Anglesite and plattnerite ps Galena spinel twin Buena Tierra Mine, West Camp, Santa Eulalia, Chihuahua, Mexico small cabinet Nothing to do with garnet, but a fun piece. Peter Megaw specimen and photograph (Author: Peter Megaw)

Anglesite and plattnerite ps Galen

Anhydrite crystal 12 cm long. Naica Mine (Author: Peter Megaw)

Anhydrite crystal 12 cm long. Naic

Anhydrite on Calcite and fluorite Mantos Mixtos, 700-760 Level Naica Mine, Naica, Chihuahua, Mexico 30 cm Massive plate of golden calcite crystals (on smaller fluorite) with 10 cm anhydrite crystals. (Brother to a piece posted earlier by javmex). Piece now in collection of New Mexico Tech (Author: Peter Megaw)

Anhydrite on Calc
Mantos Mixtos, 70

Aragonite group. Fairly unusual to see specimens of this, although it is probably common in parts of the mine. 12 cm across (Author: Peter Megaw)

Aragonite group. Fairly unusual t

Austinite crystals...2008 find. 5 mm long (Author: Peter Megaw)

Austinite crystals...2008 find. 5

Barite Milpillas Mine, Cuitaca, Santa Cruz, Sonora Mexico 10 b 7 cm. barite is 5 cm Pale blue barite on clay coated breccia matrix Peter Megaw specimen and photograph... Thanks Jesus! (Author: Peter Megaw)

Barite Milpillas Mine, Cuitaca, Sa

Benny Fenn Fenn’s Store, Las Cruces, Dona Ana County, New Mexico Benny is easily 6’ 4" tall and probably 150 pounds dripping wet! Thanks for the great rocks Benny! (Author: Peter Megaw)

Benny Fenn Fenn’s Store, Las

Bournonite, Naica with calcite and fluorite. These also grow on fluorite. 2 cm. (Author: Peter Megaw)

Bournonite, Naica with calcite and

brochantite plate with scale (Author: Peter Megaw)

brochantite plate with scale

brochantite plate...plain (Author: Peter Megaw)

brochantite plate...plain

cabinet...15 cm across (Author: Peter Megaw)

cabinet...15 cm across

Calcite on epidote from Naica (Author: Peter Megaw)

Calcite on epidote from Naica

calcite on fluorite Mina El Tule, Melchor Muzquiz, Coahuila, Mexico 9 x 8 x 7 cm Twinned platy calcite on dark purple petroliferous fluorite. Peter Megaw specimen, Jeff Scovil photograph (Author: Peter Megaw)

calcite on fluorite Mina El Tule,

Caledonite & Linarite Sunshine #3 Mine. Bingham New Mexico 3 cm across (Author: Peter Megaw)

Caledonite & Linarite Sunshine

Caledonite on Anglesite ps Galena Sunshine #3 Mine. Bingham New Mexico 3 cm across (Author: Peter Megaw)

Caledonite on Anglesite ps Galena

close up of malachite blob (Author: Peter Megaw)

close up of malachite blob

complete vug of adamite..var cuprian. 25 cm across 2008 find (Author: Peter Megaw)

complete vug of adamite..var cupri

Composite cross section across the Ojuela Chimney orebodies...modified from Villarello, 1906, International Geologic Congress, Paris. This from the Mineralogical Record issue on Ojuela...they used my original copy of Villarello to make this, so i feel entitled to pass it on (Author: Peter Megaw)

Composite cross section across the

Descloizite Americas Stope, level 17, Velardeña Mine, now in Buena Tierra Mine, West Camp, Santa Eulalia, Chihuahua, Mexico 8 x 6 x 3 cm New material from Santa Eulalia (Author: Peter Megaw)

Descloizite Americas Stope, level

diopotasaconmimetita sobre wulfenita.jpg (Author: Peter Megaw)

diopotasaconmimetita sobre wulfeni

Dugganite (Author: Peter Megaw)

Dugganite

emmonsite (Author: Peter Megaw)

emmonsite

Exhibit in mine office with specimens in front of cross section through mine showing multiple chimneys (Author: Peter Megaw)

Exhibit in mine office with specim

fairbankite (Author: Peter Megaw)

fairbankite

Flor de Pena legrandite...note the stubbier habit compared to Ojuela (Author: Peter Megaw)

Flor de Pena legrandite...note the

Fluorite San Martin Mine, Municipio Sombrerete, Zacatecas, Mexico crystal is 3 cm across Color zoned octahedral fluorite. Peter Megaw specimen (ex. Jesus Salinas); Jeff Scovil photograph (Author: Peter Megaw)

Fluorite San Martin Mine, Municipi

Fluorite and rhodochrosite Main Silicate Orebody, Potosi Mine, Santa Eulalia, Chihuahua, Mexico fluorite is 1.2 cm in diameter highly modified fluorite typical of those in the rhodochrosite matrix (Author: Peter Megaw)

Fluorite and rhodochrosite Main Si

Fluorite on Celestine Mina El Tule, Melchor Muzquiz, Coahuila Mexico 14 x 8 x 5 cm 3 cm fluorite cube perched on side of 14 x 8 cm Celestine crystal. 2013 Find. (Author: Peter Megaw)

Fluorite on Celestine Mina El Tule

fluorite on celestine Mina El Tule, Melchor Muzquiz, Coahuila Mexico Fluorite on celestime Mina El Tule, Melchor Muzquiz, Coahuila, Mexico. 8 x 6 x 5 cm 3 cm fluorite cubes enveloping an 8 cm Celestine crystal. 2013 Find. Peter Megaw specimen and photo (Author: Peter Megaw)

fluorite on celestine Mina El Tule

Fluorite on celestine Mina El Tule, Melchor Muzquiz, Coahuila Mexico appprox 30 by 30 cm shelf Group of specimens nominally from the Tule Mine. Many obviously are from the same locality, others are less certain (Author: Peter Megaw)

Fluorite on celestine Mina El Tule

fluorite on celestine Mina El Tule, Melchor Muzquiz, Coahuila, Mexico 5 x 5 x 3 cm 2 cm fluorite on Celestine. This fluorite has different luster and color from the others. Peter Megaw specimen, Jeff Scovil photograph (Author: Peter Megaw)

fluorite on celestine Mina El Tule

Fluorite on celestine Mina El Tule, Melchor Muzquiz, Coahuila, Mexico 9 x 5 x 4 cm typical 3 cm fluorite cubes on 9 cm Celestine spear. Peter Megaw specimen, Jeff Scovil photograph (Author: Peter Megaw)

Fluorite on celestine Mina El Tule

Fluorite, cubic with trisoctahedral modifications with earlier octahedral stage phantom deined by galena crystals. Naica Mine. Scovil photo (Author: Peter Megaw)

Fluorite, cubic with trisoctahedra

Giant gypsum crystal from Naica Mine (Author: Peter Megaw)

Giant gypsum crystal from Naica Mi

grasshopper.jpg (Author: Peter Megaw)

grasshopper.jpg

Gratuitous shot (by Jeff Scovil) of 10 cm tall spinel twinned native silver crystals from Batopilas, Chihuahua. Ex-Philadelphia Academy of Sciences. This piece almost certainly came out in the mid-late 1820s through Joel Roberts Poinsett. It probably was "recatalogued" from his American Philosophical Society donation that included several important Mexican silver mineral specimens (Author: Peter Megaw)

Gratuitous shot (by Jeff Scovil) o

Gypsum Naica Mine, Chihuahua, Mexico 7 cm Small group of neogenic gypsum crystals formed in a mine sump. Shows two stages of gypsum growth...an early transparent "selenite" stage of long crystals and a later coating of dusty fine-grained gypsum (Author: Peter Megaw)

Gypsum
Naica Mine, Chihu

Gypsum
Naica Mine, Naica, Municipio Saucillo, Chihuahua, Mexico
15 cm (Author: Peter Megaw)

Gypsum
Naica Mine, Naica, Muni

hemi with hand for scale (Author: Peter Megaw)

hemi with hand for scale

hemimorphite cabinet (Author: Peter Megaw)

hemimorphite cabinet

Here are 3 pages from Southworths, 1905 "Official Mining Directory of Mexico" It was published in Spanish and English, with each language on facing pages. (Author: Peter Megaw)

Here are 3 pages from Southworths,

Khinite (Author: Peter Megaw)

Khinite

Malachite in gossan cabinet (Author: Peter Megaw)

Malachite in gossan cabinet

minature, Ojuela Mine (Author: Peter Megaw)

minature, Ojuela Mine

Miniature Malachite ps Azurite from Milpillas, Sonora. Peter Megaw specimen, Jeff Scovil photo (Author: Peter Megaw)

Miniature Malachite ps Azurite fro

Miniature Malachite ps Azurite on Plancheite from Milpillas, Sonora. Peter Megaw specimen, Jeff Scovil photo (Author: Peter Megaw)

Miniature Malachite ps Azurite on

My candidate for the finest gypsum crystal to come out of Naica. This sits in an exhibit case in the mine office and is flawless (Author: Peter Megaw)

My candidate for the finest gypsum

Naica Mine, Naica, Municipio Saucillo, Chihuahua, Mexico
15 cm (Author: Peter Megaw)

Naica Mining Company Prospectus

Naica octahedron 10 cm on an axis (Author: Peter Megaw)

Naica octahedron 10 cm on an axis

Naica spinel twinned fluorite...with large enhydro. 8 cm across (Author: Peter Megaw)

Naica spinel twinned fluorite...wi

Naica trap mod.jpg (Author: Peter Megaw)

Naica trap mod.jpg

Natanite and rhodochrisite Main Silicate Orebody, Potosi Mine, Santa Eulalia, Chihuahua, Mexico FOV 1 cm Cluster of 2 mm yellow-orange natanite crystals with rhodochrosite (Author: Peter Megaw)

Natanite and rhodochrisite Main Si

Nifontovite, 6 cm across group. Rey y Reina Mine, Charcas, San Luis Potosi, Mexico. Big brother to the one my daughter won the Lidstrom Trophy with at Tucson in 2009 (Author: Peter Megaw)

Nifontovite, 6 cm
Big brother to th

Nifontovite, 7 cm single crystal, Rey y Reina Mine, Charcas, San Luis Potosi, Mexico. Inclusions are bakerite and calcite (Author: Peter Megaw)

Nifontovite, 7 cm
Inclusions are ba

Oboyerite (Author: Peter Megaw)

Oboyerite

Older austinite find...most sold as smithsonite. Piece is 10 cm across (Author: Peter Megaw)

Older austinite find...most sold a

original label for specimen (Author: Peter Megaw)

original label for specimen

Outcrop La Noria Vein and community, San Pantaleon de la Noria, Municipio Sombrerete, Zacatecas, Mexico House is about 15m across Photo probably taken in the 1930s. (Author: Peter Megaw)

Outcrop La Noria Vein and communit

Parakhinite (Author: Peter Megaw)

Parakhinite

Pickles2.jpg (Author: Peter Megaw)

Pickles2.jpg

Picture from Ragsdale, showing Perry Mansion in background (Author: Peter Megaw)

Picture from Ragsdale, showing Per

Pocket mate of Gerhard’s specimen...6 cm across (Author: Peter Megaw)

Pocket mate of Gerhard’s spe

pre-1912 shot of Mapimi smelter in full operation (Author: Peter Megaw)

pre-1912 shot of Mapimi smelter in

Pyrite "worms" on quartz 5 cm across (Author: Peter Megaw)

Pyrite "worms" on quartz

Quartz Montgomery Co., Arkansas, USA 75 cm Monster 75 cm group (Author: Peter Megaw)

Quartz Montgomery Co., Arkansas, U

Rhodochrosite Main Silicate Orebody, Potosi Mine, Santa Eulalia, Chihuahua, Mexico vug is 6 x 5 cm Vug lined with 6 mm gemmy red rhodochrosite crystals (Author: Peter Megaw)

Rhodochrosite Main Silicate Orebod

Rhodochrosite Main Silicate Orebody, Potosi Mine, Santa Eulalia, Chihuahua, Mexico 2.5 cm...true thumbnail "Fairy ring" of rhodochrosite crystals on typical cronstedtite matrix (Author: Peter Megaw)

Rhodochrosite Main Silicate Orebod

rhodochrosite Main Silicate Orebody, Potosi Mine, Santa Eulalia, Chihuahua, Mexico 4 cm overall, crystal is 1.5 cm Gemmy 1.5 cm rhodochrosite crystal. (Author: Peter Megaw)

rhodochrosite Main Silicate Orebod

Rhodochrosite Main Silicate Orebody, Potosi Mine, Santa Eulalia, Chihuahua, Mexico thumbnails to small cabinet Piece in top center has at least 9 micro natanites nestled among the rhodos (Author: Peter Megaw)

Rhodochrosite Main Silicate Orebod

same piece, side view (Author: Peter Megaw)

same piece, side view

scheifflinite (Author: Peter Megaw)

scheifflinite

Shelf of Naica fluorites (Author: Peter Megaw)

Shelf of Naica fluorites

small cabinet...azurite on malachite (Author: Peter Megaw)

small cabinet...azurite on malachi

Southworth middle (Author: Peter Megaw)

Southworth middle

Southworth...final (Author: Peter Megaw)

Southworth...final

Spangolite Mex-Tex Mine. Bingham New Mexico 4 cm across (Author: Peter Megaw)

Spangolite Mex-Tex Mine. Bingham N

Superb native silver growing (naturally I assume) from acanthite. Pachuca District, Mine unknown. small cabinet (Author: Peter Megaw)

Superb native silver growing (natu

The "Shipwreck" goethite pseudo/epimorphous after gypsum. Buena Tierra Mine, Level 2, West Camp, Santa Eulalia, Chihuahua, Mexico. 25 cm across. (Author: Peter Megaw)

The "Shipwreck" goethite

TN calcite with aurichalcite inclusions (Author: Peter Megaw)

TN calcite with aurichalcite inclu

utahite (Author: Peter Megaw)

utahite

Vesignieite
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora, Mexico
FOV 1.5 cm (Author: Peter Megaw)

Vesignieite
Milpillas Mine, Cu

Vesignieite
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora, Mexico
8 x 5.5 cm (Author: Peter Megaw)

Vesignieite
Milpillas Mine, Cu

View looking across Ojuela Bridge to west (Author: Peter Megaw)

View looking across Ojuela Bridge

villaplanweb.jpg (Author: Peter Megaw)

villaplanweb.jpg

Wulfenite on fluorite Upper Levels, San Antonio Mine, East Camp, Santa Eulalia, Chihuahua, Mexico main wulfenite 1 cm across close up of piece above (Author: Peter Megaw)

Wulfenite on fluorite Upper Levels

Wulfenite on fluorite Upper Levels, San Antonio Mine, East Camp, Santa Eulalua, Chihuahua, Mexico 11 x 7.5 x 5 cm Probably from near the Cock’s Orebody which produced vanadinites last year (Author: Peter Megaw)

Wulfenite on fluorite Upper Levels

Wulfenite, Red Cloud Mine, La Paz Co., Arizona: small cabinet (Author: Peter Megaw)

Wulfenite, Red Cloud Mine, La Paz

Wulfenite, Rowley Mine, Maricopa Co., Arizona. small minature (Author: Peter Megaw)

Wulfenite, Rowley Mine, Maricopa C

Yafsoanite (Author: Peter Megaw)

Yafsoanite