FMF Minerals Gallery

A closer shot of the upcoming Fluorite. I forgot the sequencing again. (Author: Jim Prentiss)

A closer shot of the upcoming Fluo

A larger veiw of one of the crystals. FOV 4 mm. (Author: Jim Prentiss)

A larger veiw of one of the crysta

A light blue coating of Strashmirite from the Majuba Hill Mine, Pershing County, Nevada. Field of view is 1.00" (2.54cm). (Author: Jim Prentiss)

A light blue coating of Strashmiri

A little Zippeite from the JAckpot Mine, Laguna Dostrict, Cibola County, New Mexico. Field of view a little over an inch (2.54cm). (Author: Jim Prentiss)

A little Zippeite from the JAckpo

Actinolite 02b.JPG (Author: Jim Prentiss)

Actinolite 02b.JPG

Although it is rather lack-luster, I do not consider this type locality piece, all that ugly. I enjoy the curtain-like habit. It reminds me of the curtain-like cave formations. It comes from Mount Yukspor, Kola Peninsula, Russia. The field of view is about 1 1/4" (3.18cm) wide. (Author: Jim Prentiss)

Although it is rather lack-luster,

Another of my favorites. This Millerite always amazes people, especially those who know I have cats. It takes a couple of minutes with a 10x before they see the crystals for what they are. Teh field of view is 1 1/2" (3.8cm). It is from Keokuk County, Iowa. (Author: Jim Prentiss)

Another of my favorites. This Mill

Any white water enthusiasts out there? Does this not remind anyone of rapids in a stream? This Pyrophyllite is from Hillsboro Mine, Orange County, North Carolina and is 4" x 2" (10.16cm x 5.08cm) (Author: Jim Prentiss)

Any white water enthusiasts out th

As a type locality mineral, this Sulphohalite crystal is rather nice looking. This, too, is a new mineral to my collection and it is from Searles Lake, San Bernardino County, California. The crystal is 3/4" (1.9cm). (Author: Jim Prentiss)

As a type locality mineral, this S

As is the case with most of my type locality minerals this is not real showy. The bright yellow crust is Pottsite from Linka Mine, Spencer Hot Springs District, near Potts, Lander county, Nevada. The piece is about 1 1/8" x 1" (2.86 x 2.54 cm) (Author: Jim Prentiss)

As is the case with most of my typ

Austinite Gold Hill Mine, Gold Hill District, Deep Creek Mountains, Tooele County, Utah, USA field of view is 1.0" (2.54 cm) Here is some Austinite from the type locality at Gold Hill Mine, Gold Hill District, Deep Creek Mountains, Tooele County, Utah. The field of view is 1.0" (2.54cm). Don’t pay any attention to the little cotton fiber, I obviously didn’t. (Author: Jim Prentiss)

Austinite Gold Hill Mine, Gold Hil

Back to the "ugly" type locality mineral, theme. Here is a specimen of Native Iron (the small bright areas), from Disko Island, Greenland. The bright Iron spots are about 1/32" (0.8mm) in diameter. (Author: Jim Prentiss)

Back to the "ugly" type

Brassy looking little flakes of Stipnomelane from the French Creek Mine #2, Chester County, Pennsylvania. Field of veiw is 1 3/4" (4.45 cm). (Author: Jim Prentiss)

Brassy looking little flakes of St

Calcite Chalk Hill Quarry, Dallas, Dallas Co., Texas, USA Crystals average about 0.25" (6mm) These little Calcites are from the Chalk Hill Quarry, Dallas County, Texas the crystals average about 0.25" (6mm) (Author: Jim Prentiss)

Calcite Chalk Hill Quarry, Dallas,

Calcite Williamsville Quarry, Butler County, Missouri. 1 1/8" (2.86 cm) high. (Author: Jim Prentiss)

Calcite
Williamsville Qua

Chalcopyrite Brushy Creek, Greeley, Viburnum Trend District, Reynolds County, Missouri. 4 1’8’ (10.48 cm) across. (Author: Jim Prentiss)

Chalcopyrite
Brushy Creek, Gre

Clinochlore (var. Chromian Clinochlore). I tossed this one in for color. These bright lilac, tiny hexagonal crystal clusters come from the Woods Chromite Mine, Lancaster, Pennsylvania. The specimen is about 2" (5.08cm) across. (Author: Jim Prentiss)

Clinochlore (var. Chromian Clinoch

Coquimbite Dexter #7 Claim Mine, Calf Mesa, San Rafael District, Emery County, Utah, USA 3/8" (0.95 cm) This little Coquimbite cluster is from the Dexter #7 Claim Mine, Calf Mesa, San Rafael District, Emery County, Utah. It is about 3/8" (0.95cm). (Author: Jim Prentiss)

Coquimbite Dexter #7 Claim Mine, C

Extremely small crystal of Zunyite from the type locality, at the Zuni Mine, Anvil Mountain, Silverton, Silverton District, San Juan County, Colorado. Field of view about 3/8" (0.95cm) (Author: Jim Prentiss)

Extremely small crystal of Zunyite

Ferrierite-Na Altoona, Wahkiakum County, Washington, USA FOV is 2 mm (0.080") This tiny little bladed cluster is also a type locality mineral. (Author: Jim Prentiss)

Ferrierite-Na Altoona, Wahkiakum C

Fluorite octahedrons from Zarembo Island, near Wrangel, Alaska about 4" x 2 1/2" x 1 1/4" (10.1 x 6.4 x 3.3 cm) (Author: Jim Prentiss)

Fluorite octahedrons from Zarembo

For a little flash I have added my Colemanite, The large blade is 7/8" x 3/8" (2.22 x 0.95 cm). This example is from the Boraxo Mine, Death Valley, Inyo County, California. (Author: Jim Prentiss)

For a little flash I have added my

Forgive my inability to successfully capture the true luster and color of metallic minerals. This mineral is aptly named Cylindrite and is from the type locality at Santa Cruz Mine, Oruro Deparment, Bolivia. Like most of my type locality minerals, it is not museum quality, but the rare habit makes up for it. The field of view is about 1" (2.54cm) (Author: Jim Prentiss)

Forgive my inability to successful

Going for a little flash. I have read about the Quartz Gwindels and of course I got one when I could. I do not know how well this ranks among other examples, But its mine, and I like it. According to the label I recieved it is from Val Strem, Tavetsch, Graubunden, Switzerland, and it measures 3 1/4 x 2 3/8" (8.26cm x 6.03cm) (Author: Jim Prentiss)

Going for a little flash. I have r

Halite 02.jpg (Author: Jim Prentiss)

Halite 02.jpg

Halotrichite Markey Mine, Red Canyon, White Canyon District, San Juan County, Utah, USA 1 1/2" x 1 3/8" (3.81 x 3.49 cm) This fibrous mass of Halotrichite is about 1 1/2" x 1 3/8" (3.81 x 3.49cm) and is from the Markey Mine, Red Canyon, White Canyon District, San Juan County, Utah. (Author: Jim Prentiss)

Halotrichite Markey Mine, Red Cany

Hemimorphite and Mimetite, detail of the above. Field of veiw is 1" (25.4cm) (Author: Jim Prentiss)

Hemimorphite and Mimetite, detail

Hemimorphite with Mimetite. Specimen measures 3 1/2" x 2 3/4" x 2" (8.9cm x 7.0cm x 5.1cm) (Author: Jim Prentiss)

Hemimorphite with Mimetite. Specim

Here again I am attempting a metallic mineral. This octahedral Galena is from Huanzala Mine, Huallanca District, Dos de Mayo Province, Huanuco Departemnt, Peru. I t is 3 1/4" x 1 3/4" (8.26 cm x 4.45 cm) (Author: Jim Prentiss)

Here again I am attempting a metal

Here are some dendritic Native Copper inclusions in Gypsum from the Mission Pit Mine, Pima County, Arizona. The field of veiw is about 3/4" (1.9cm) (Author: Jim Prentiss)

Here are some dendritic Native Cop

Here is a bright green encrustation of Arthurite from Copper Stope, Majuba Hill Mine, Antelope District, Pershing County, Nevada. The speecimen is about 1 3/4" x 1 3/8" (4.45 x 3.49 cm) (Author: Jim Prentiss)

Here is a bright green encrustatio

Here is a busy piece in this Pyrite crystal "Sunflower" from the Zhuang Autonomous Region, China. It is 3 1/4" in diameter (8,3cm). It could be used as a paper weight but I’d rather not. (Author: Jim Prentiss)

Here is a busy piece in this Pyrit

Here is a different Heulandite from Pato Branco, Parana, Brazil. The specimen is 1" square (2.4cm) (Author: Jim Prentiss)

Here is a different Heulandite fro

Here is a nice little twin of Loparite-(Ce) in matrix from Kukisvumchorr Mountain, Kola Peninsula, Russia. This is one of the pieces that got the attention of the US Customs as I drove accross the border a couple of years back. It is about 5/16" cubed (8mm) (Author: Jim Prentiss)

Here is a nice little twin of Lopa

Here is a piece of your garden variety Ulexite. I hadn’t noticed this listed here yet so I threw it in for diversity. It is from the Boron Pit, U.S Borax Mine, Boron, Kramer District, Kern County, California and measures 4 5/8" x 3" (11.75 x 7.62 cm). (Author: Jim Prentiss)

Here is a piece of your garden var

Here is a recent acquisition. Dendritic Native Copper inclusions in Gypsum from the Mission Pit Mine, Pima County, Arizona. The photo turned out fairly well considering it was originally a photo of the host crystal which I have separately cataloged as a gypsum specimen as well. The field of veiw is about 3/4" (1.9cm) (Author: Jim Prentiss)

Here is a recent acquisition. Dend

Here is an example of fibrous Chrysotile from the Jeffery Mine, Asbestos, Quebec, Canada. Here the attraction, in addition to being something new and different to my collection, is the color banding and the fibrous habit. The seam is 3/8" wide (0.8cm) (Author: Jim Prentiss)

Here is an example of fibrous Chry

Here is another of my type locality minerals. This was my first Variscite. The small, 1/32" (0.8mm) green spheres are from Meßbach Quarry, Altmannsgrun, Plauen, Voughtland, Saxony, Germany. (Author: Jim Prentiss)

Here is another of my type localit

Here is both Barite (Strontian variety) and ruby jack Sphalerite from the Elmwood Mine, Carthage, Smith County, Tennessee. The feild of veiw is about 1 1/2" (3.81 cm). (Author: Jim Prentiss)

Here is both Barite (Strontian var

Here is my example of Sweetwater Mine, Missouri Calcite. The main crystal is 1 1/8" x 5/8" (2.8cm x 1.6cm) (Author: Jim Prentiss)

Here is my example of Sweetwater M

Here is one of my black minerals. I like this Manganite because of the woven-like pattern of the lustrious crystals in the aggregate. it is from the Caland pit, Atikokan, Hutchingston Township, Rainy River District, Ontario, Canada. The specimen measures 3 3/4" x 2 1/4" (9.53cm x 5.72cm). (Author: Jim Prentiss)

Here is one of my black minerals.

Here is one of my recent acquisitions. This deep purple Stichtite in matrix is another one of my ugly type locality minerals from Stichtite Hill, Dundas Mineral Field, Zeehan District, Tasmania, Australia. The specimen is 1 1/4" x 3/4" (3.2cm x 1.9cm) (Author: Jim Prentiss)

Here is one of my recent acquisiti

Here is some copper colored Coalingite from the type locality at theNew Idria Serpentinite, Coalinga, New Idria District, Fresno County, California the specimen is about 1.75" x 1.25" (4.44cm x 3.18cm) (Author: Jim Prentiss)

Here is some copper colored Coalin

Here is some Cristobalite with Tiny blades of Fayalite from the Coso Hot Springs Deposit, Coso Hot Springs, Inyo County, California the Cristobalite is about 1.0" (2.54 cm) in diameter (Author: Jim Prentiss)

Here is some Cristobalite with Tin

Here then is my Pectolite from Paterson, Passaic County, New Jersey. The specimen is 1 1/2" x 1" (3.81 x 2.54 cm) (Author: Jim Prentiss)

Here then is my Pectolite from Pat

Here’s my combination piece of Zincite, Franklinite and Willemite from Franklin, Sussex County, New Jersey. When I recieved this, many years ago it added three new minerals to my collection at a very reasonable price, obviously. the specimen is 5 3/4" x 3 3/4" (14.61 x 9.53 cm). It is in keeping with my aesthetically challenged type locality specimens. And, yes, it would make a good door stop, but it is not. (Author: Jim Prentiss)

Here’s my combination piece

I am sure nearly everyone has Sulphur (I prefer the old spelling) as an example of a Native Element mineral. This one is a little diffrent in that it appears to have been dripped on the matrix like wax from a tipping candle. It is from San Carlos Mine, San Felipe, Mun. de Mexicali, Baja California Norte, Mexico. The crystal is 3/8" (10mm) across (Author: Jim Prentiss)

I am sure nearly everyone has Sulp

I have mentioned that I am fsatinated by different habits, this Opal (Hyalite) is an example of my favorite habit(s), botryoidal, reniform, mammillary. Freud would probably say it was because I was bottle fed. In addition to the habit, though, is the near water clear transparency. This piece is from the Czech Republic. It measures 1 1/2" x 1" x 1" (2.8cm x 2.5cm x 2.5cm) (Author: Jim Prentiss)

I have mentioned that I am fsatina

I have seen quite a bit of the "star" Muscovite coming out of Brazil. And as I have no examples, I submit this little pseudohexagonal crystal aggregate for consideration. The specimen is about 1 1/2" x 1 1/2" (3.81cm x 3.81cm) (Author: Jim Prentiss)

I have seen quite a bit of the &qu

I just put this Zippeite up on the New Mexico state listing. It is from Jackpot Mine, Laguna District, Cibola County, New Mexico (Author: Jim Prentiss)

I just put this Zippeite up on the

I like this Astrophyllite because of its different habit, it looks like copper colored streamers lying on the matrix. The field of view is 3" (7.62cm). It is from Eveslogchorr Mountain, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast, Northern Region, Russia. (Author: Jim Prentiss)

I like this Astrophyllite because

I like this Kernite because it is simple and was a new mineral for me. it is a bit difficult to display at it is 10 1/2" x 4/12" 3" (26.6cm x 11.4cm x 7.6cm). It is from kern Co., California. I purchased this piece a few years ago at the Alaska Miners Convention Rock and Mineral show. (Author: Jim Prentiss)

I like this Kernite because it is

I really like this combination of the clear Hemimorphite and bright yellow Mimetite from the Ojuela Mine, Durango, Mexico. The specimen is 3 1/2" x 2 3/4" x 2" (8.9cm x 7.0cm x 5.1cm) (Author: Jim Prentiss)

I really like this combination of

It is about 2.5" (6.4cm) in diameter about an inch (2.54 cm) thick. (Author: Jim Prentiss)

It is about 2.5" (6.4cm) in d

Meta-autunite Daybreak Mine, Mount Kit Carson, Spokane County, Washington, USA The FOV is about 4mm (0.160") This little guy is from the type locality. (Author: Jim Prentiss)

Meta-autunite Daybreak Mine, Mount

Metaheinrichite White King Mine, Lakeview, Lake County, Oregon, USA The field of view is about 1/8" (3.20 mm) This little Metaheinrichite cluster is from one of the co-type localities at the White King Mine, Lakeview, Lake County, Oregon. (Author: Jim Prentiss)

Metaheinrichite White King Mine,

min109 001.jpg (Author: Jim Prentiss)

min109 001.jpg

My first Fluorite. This octahedral Fluorite comes from Zarembo Island, which is near Wrangel, in Southeast Alaska. I had to go there one day, in 1980, to fix a broken helicopter and our customer, a geologist, gave me this piece. The crystals are very pale light green, practically colorless on drusy Quartz, and average 1/4" (6mm) the specimen is about 4" x 2 1/2" x 1 1/4" (10.1cm x 6.4cm x 3.2cm) (Author: Jim Prentiss)

My first Fluorite. This octahedral

My first Malachite. I have to agree with Jordi on the sacredness of leaving a mineral in its natural form. This is not what I had ordered, the dealer was helping. Still it has the habit I am most enamored with, and kids think its pretty. It is 5" x 3 1/2 x 2" (12.7cm x 8.9cm x 5.1cm) (Author: Jim Prentiss)

My first Malachite. I have to agre

Newberyite, a real Type Locality peice from Skipton Caves, Mount Widderin (Anderson’s Hill), Skipton, Corangamite Shire, Victoria, Australia. It is about 1" in diammter (2.54 cm) (Author: Jim Prentiss)

Newberyite, a real Type Locality p

Obviously this is a reasonably commmon mineral but the habit here seemed worthy of a photograph. This Tremolite is from the Grace Mine, in Berks County, Pennsylvania. The specimen is 1 1/4" (3.18 cm). (Author: Jim Prentiss)

Obviously this is a reasonably com

Pyrophyllite Hillsboro Mine, Orange Co., North Carolina, USA The field of view vertcally is about 2.50" (6.35 cm) (Author: Jim Prentiss)

Pyrophyllite Hillsboro Mine, Orang

Realgar from the Cold Bar Mine, Eureka County, Nevada. This is a nice color if nothing else. the specimen is 3 1/4’ x 2 1/2" (8.26 x 6.35 cm) (Author: Jim Prentiss)

Realgar from the Cold Bar Mine, Eu

Saponite from Laurium Mine, Laurium, Houghton County, Michigan. The field of view is 3 mm. One of my first attempts with Helicon Focus. I have yet to rectify my lighting issues. (Author: Jim Prentiss)

Saponite from Laurium Mine, Lauriu

Sinkankasite Baker-Ferguson Mine, Keystone, Keystone District, Pennington County, South Dakota, USA Field of view is 2 mm This is another attempt with the Helicon Focus, I need one of those "Student Driver" signs to stick on my microscope. This Sinkankasite is from the type locallity at the Baker-Ferguson Mine, Keystone, Keystone District, Pennington County, South Dakota. The field of view is 2 mm (Author: Jim Prentiss)

Sinkankasite Baker-Ferguson Mine,

Sulphohalite is my last exhibit this round. it is about 3/4" (1.90 cm) high and is from the type locality at Searles Lake, San Bernardino County, California (Author: Jim Prentiss)

Sulphohalite is my last exhibit th

The crystals here of Stibnite are very small averaging 1/8" to 3/8" (3mm to 9mm) in length. The specimen is from , the aptly named, Stibnite Creek SW of the town of Tok, Alaska. I picked tis one up in 1996. It is 2 3/4" x 1 1/2" x 1 1/2" (11.4cm x 3.8cm x 3.8cm) (Author: Jim Prentiss)

The crystals here of Stibnite are

These small tetrahedral crystals of Helvite are on Albite matrix. They are from the Navegador Mine, Minas Gerais, Brazil. The crystals average about 1/4" (6mm). (Author: Jim Prentiss)

These small tetrahedral crystals o

These, seemingly formless, Calcite crystals, that have obvious rhombohedral terminations, caught my eye some years ago, in a little out of the way rock shop in Anchorage. They are from Irai, Rio Grande do Sul, Brazil and average about 1 1/4" x 3/8" (3.18cm x 0.95cm) (Author: Jim Prentiss)

These, seemingly formless, Calcite

This Antigorite should add a little color. It is about 2 3/4" (6.98 cm) across from the Woods Chromite Mine, Lancaster, Pennsylvania. (Author: Jim Prentiss)

This Antigorite should add a littl

This Bismuth is from Wolfram Camp, Dimbulah, Queensland, Australia. The field of view is 1" (2.54cm). (Author: Jim Prentiss)

This Bismuth is from Wolfram Camp,

This Bournonite, from the Quiruvilca District, La Libertad Department, Peru, shows the classic "cogs wheel" Habit. The crystals average about 1/4" (6mm) in diameter. (Author: Jim Prentiss)

This Bournonite, from the Quiruvil

This bright green "jackstraw" crystal aggregate of Actinolite I picked up along the Kobuk River near the Village of Deering in western Alaska in 1994. It is 4 1/2" x 3" x 2 1/2" (11.7cm x 7.6cm x 6.4cm) (Author: Jim Prentiss)

This bright green "jackstraw&

This bright green "jackstraw" crystal aggregate of Actinolite I picked up along the Kobuk River near the Village of Deering in western Alaska in 1994. It is 4 1/2" x 3" x 2 1/2" (11.7cm x 7.6cm x 6.4cm) (Author: Jim Prentiss)

This bright green "jackstraw&

This bronze flaky Coalingite, from the type locality in Fresno Co., California, is like most of my type locality speimens, not especially pretty, but like the orange Calite it has a good color. The flakes are very tiny and the field of veiw in the photo is 1" (2.5cm) (Author: Jim Prentiss)

This bronze flaky Coalingite, from

This Chrysocolla is yet another example of one of my favorite habits. Also, the blue color is, to me, quite attractive, despite the ugly matrix. It is 2 1/4" x 2" (5.72cm x 5.08cm) and is from the Kolwezi Mine, Kolwwezi, Western Area, Shaba Copper Belt, Shaba (Katnga), Democratic Republic of Congo (Zaire). (Author: Jim Prentiss)

This Chrysocolla is yet another ex

This dark green Diopside is from the Mulvaney Property, Pitcarin, Saint Lawrence County, New York and measures 5/8" x 3/16" (1.59 cm x 0.48 cm) (Author: Jim Prentiss)

This dark green Diopside is from t

This Epidote I picked up as a teenager out hunting one day, on Green Monster Mountain, Prince of Wales Island, Alaska. Around 1972-73. It is an old joke between my buddy and I that he got a three point buck that day and I got a rock! It is 3 1/4" x 1 1/2" x 3/4" (8.3cm x 3.8cm x 1.9cm). It is a partial crystal and ypu can get a sense of how large it would have been. (Author: Jim Prentiss)

This Epidote I picked up as a teen

This Hanksite crystal is from the type locality at Searles Lake, San Bernardino Co., California. It is 5" x 4 1/2" in Diameter (12.7cm x 11.4cm) (Author: Jim Prentiss)

This Hanksite crystal is from the

This humble Realgar specimen has a couple of well formed brightly colored crystals scattered about which are better viewed with at least a 10x. The crystals average about 1/16" (1.6mm) from Royal Reward Mine, Green River Gorge, Franklin, King County, Washington. (Author: Jim Prentiss)

This humble Realgar specimen has a

This is "starburst" Pyrophyllite from Indian Gulch, Mariposa County, Calfornia. The field of view is about 1 1/2" (3.8cm) (Author: Jim Prentiss)

This is "starburst" Pyro

This is a busy little piece. It took nearly fifteen years to get the whole story from the Alaska Geological Survey, on this ugly little specimen. It is Calcite var. Glendonite pseudomrph after sand included Glauberite. I picked it up Near Carter Creek, North Slope, Alaska, while crewing a helicopter in 1983. It is 2 1/2" x 1 5/8" (6.35cm x 4.13cm) (Author: Jim Prentiss)

This is a busy little piece. It to

This is a rather recent addition to my collection. I have several Mimetites, but this is the first green example I have seen. It is 1 3/8" x 1" (3.49cm x 2.54cm) and is from the Ojuela Mine, Mapmimi, Mun. de Mapimi, Durango, Mexico (Author: Jim Prentiss)

This is a rather recent addition t

This is a rather thick carpet of Aragonite from Eklutna Lake, Near Anchorage, Alaska I picked up at the Alaska Miners Convention a couple years back - It is 4" x 2 3/4" x 2" (11.4cm x 6.9cm x 5.1cm) (Author: Jim Prentiss)

This is a rather thick carpet of A

This is a recent acquisition, Pyrite on Calcite from Chenzhou Prefecture, Hunan Province, South Central Region, China. However it reminds me of Stone Mountain, Georgia. Field of view is 1/2" (1.27 cm) (Author: Jim Prentiss)

This is a recent acquisition, Pyri

This is a small specimen of Biege colored Crandallite on matrix from Mont-Des-Groseillers, Belgium (I hope I spelled and punctuated that correctly). This too has an interesting habit. It is 1" x 3/4" x 1/2" (2.5cm x 1.9cm x 1.3cm) (Author: Jim Prentiss)

This is a small specimen of Biege

This is a Wrangel Almandine I got while on a Boy Scout "Camporee" in Wrangel in 1971, Along with the matrix specimen above. Wrangel was only 80 miles away but the only way to get there was ferry or plane and after over 25 years living in Ketchikan I only got there three times. It is 5/8" (1.6cm) in diameter. (Author: Jim Prentiss)

This is a Wrangel Almandine I got

This is the Smithsonite I have looked for going on twenty years. I have lots of the botryoidal or reniform. This piece is from the Tsumeb Mine, Otjikoto Region, Namibia. it is about 3/4" (1.91cm) high (Author: Jim Prentiss)

This is the Smithsonite I have loo

This is Tremolite var. Hexagonite, and according to one reference it comes from the Type Locality (For Hexagonite) in Edwards, Balmat-Edwards Zinc District, Saint Lawrence County, New York. It is 3 1/2" x 2 /1/2" (8.89 cm x 6.35 cm) (Author: Jim Prentiss)

This is Tremolite var. Hexagonite,

This Kernite is from the US Borax Mine, Kramer Borate Deposit Boron, Kramer District, Kern County, California and is 11.25" x 4.50" x 3.00" (28.58 x 11.43 x 7.62 cm) (Author: Jim Prentiss)

This Kernite is from the US Borax

This little Arsenopyrite is about 5/8" x 1/2" (1.59 cm x 1.27 cm). This specimen is from Chihuahua, Mexico (Author: Jim Prentiss)

This little Arsenopyrite is about

This little Orpiment piece is from Elbrusskiy Mine, Elbruss Mt, Northern Caucasus Region, Russia. I have had little luck in capturing the beauty of this brighty colored specimen. If anyone has seen this stuff before you know what I mean. The dimensions are 1" x 1/2" x 3/8" (2.5cm x 1.3cm x 0.8cm) (Author: Jim Prentiss)

This little Orpiment piece is from

This little Sphalerite is from the Queen of the Hills Mine, Neihart District, Cascade County, Montana and is about 5/16" (0.80 cm). (Author: Jim Prentiss)

This little Sphalerite is from the

This little Sturmanite cluster is from N’Chwanning I Mine, N’Chwanning Mines, Kalahari Manganese Fields, Northern Cape Province, South Africa. The specimen measures 1 1/2" x 5/8" 9 3.81cm x 1.59cm) (Author: Jim Prentiss)

This little Sturmanite cluster is

This Macfallite is from the type locality at Manganese Mine, Copper Harbor, Keweenaw County, Michigan. The crystals are about 3/16" (0.48 cm) (Author: Jim Prentiss)

This Macfallite i
Michigan. The cry

This Magnesioriebeckite is one of my better type locality minerals from Alto Chapare District, Chapare Province, Cochabamba Deparment, Bolivia. the field of view is 1 1/2" wide (3.8cm) (Author: Jim Prentiss)

This Magnesioriebeckite is one of

This Mercury glubule is my first attempt at microphotography. Obviously I have a lot to learn, like reflections. However the reflection here attests to the nerly perfect spherical shape of the element as that is my ring light creating the "eyeball" effect. The drop is about 0.012" (0.3 mm).Socrates Mine, Middletown, West Mayacmas District,Sonoma County, California (Author: Jim Prentiss)

This Mercury glubule is my first a

This piece is rather difficult for me to capture given the simple photographic equipment I have. I like the exremely fine fibrous habit of this Xonotlite. The specimen is 5/8" (1.6cm) accross (Author: Jim Prentiss)

This piece is rather difficult for

This POW Epidote was given to me a few yars ago by an old family friend. The crystals are quite small averaging 5/16" (8mm) long, embedded in Quartz crystal. The Epidote crystals are doubly terminated, but very dificult to get the detail here. That is one of the endearing aspects of this little guy. The field of veiw vertically is about 1 1/2" (3.8cm) (Author: Jim Prentiss)

This POW Epidote was given to me a

This pseudocubic crystal cluster of Apophyllite-K(OH), (Bah Humbug! I prefer Hydroyapophyllite) is 1 3/8" x 3/4" (3.49cm x 1.90cm) . it is from N’Chwaning Mine II, N’Chwaning Mines, Kalahari Manganese Fields, Northern Cape Province, South Africa (Author: Jim Prentiss)

This pseudocubic crystal cluster o

This Scolecite is the only mineral specimen I have from Iceland, from Teigarhorn, Berufjord. the field of view is close to 2" (5.08cm) (Author: Jim Prentiss)

This Scolecite is the only mineral

this slender prismatic doubly terminated little crystal is Childrenite on Microcline from Lavra do Poco Dantas, Minas Gerais, Brazil. It is 1" x 1/8" (25.4mm x 3.2mm). I have read that Childrenite makes a good "new species" mineral as it is only known in crystals (Author: Jim Prentiss)

this slender prismatic doubly term

This specimen is a pretty good looking mineral for one of my type locality pieces. The habit and color are typical of the Aghbar Mine, Aghbar, Bou Azzer District, Tazenakht, Qiarzazate Province, Suoss-Massa-Draa Region, Morocco. It is named after Wendell E. Wilson, Editor and Publisher of the Mineralogical Record. The specimen measures 1 1/4" x 1" (3.18cm x 2.54cm). (Author: Jim Prentiss)

This specimen is a pretty good loo

This specimen is Forsterite, tiny pale green druzy crystals lining small vugs in matrix. I picked it up in 1995 near New Chenega Village, Evans Island, Prince William Sound, Alaska. the piece is 1 3/8" x 1 3/8" (3.49cm x 3.49cm) (Author: Jim Prentiss)

This specimen is Forsterite, tiny

This Thenardite is a pseudo @ Halite and the specimen is 1 3/8" (3.49 cm). It is from Searles Lake, Trona, San Bernadino County, California. (Author: Jim Prentiss)

This Thenardite is a pseudo @ Hali

This tiny little Strengite is from High Bluff Limonite Bank, Indian Mountain, Cherokee County, Alabama. The field of view is about 0.080" (2 mm). (Author: Jim Prentiss)

This tiny little Strengite is from

This tiny Prehnite is from Spring Lake, Harrisville, Burrillville, Providence County, Rhode Island. The field of veiw is 0.125" (3.2 mm). (Author: Jim Prentiss)

This tiny Prehnite is from Spring

This tiny Strontianite is around 1/16" (1.6mm) long. It ia one of the lucky shots I have achieved with my everyday digital camera. It if from Faylor Middle Creek Quarry, Winfield, Union County, Pennsylvania. (Author: Jim Prentiss)

This tiny Strontianite is around 1

This Trona is 1 1/2" (3.81 cm) high and is from Owens Lake, Inyo County, California. (Author: Jim Prentiss)

This Trona is 1 1/2" (3.81 cm

Trilithionite/Lepidolite; your choice, I prefer Lepidolite but the "times they are a chanin’ ", and so are the mineral names.This piece is rather large at over 9" x 4 1/2 " x 2 3/4" (23cm x 11.4cm x 6.9cm). It is, as expected, from Minas Gerais, Brazil. (Author: Jim Prentiss)

Trilithionite/Lepidolite; your cho

Tyuyamunite is one of the radioactive minerals in my collection that the Border Patrols sensors detected when I came down from Alaska a couple of years ago. Very sensitive equipment. I like it for its bright yellow color. The minute tabular crystals and only be appreciated with 20x or more. It is from Blue Peak Mine, Poison Canyon Area, Grants District, Cibola County, New Mexico and measures 7/8" x 3/4" (2.22cm x 1.90cm) (Author: Jim Prentiss)

Tyuyamunite is one of the radioact

Well Ed, here is a matrix specimen of the Wrangel garnets. Forgive the photography I was unable to get a decent shot at this time. This specimen is 2 1/2" square and 1 1/2" thick (6.3cm x 3.8cm) (Author: Jim Prentiss)

Well Ed, here is a matrix specimen

Well her is "another" photo of Wavellite, but I had to include this one. This is one of my personal favorites. I like the habit and the color. I read once where most collectors would rather thier specimens be perfect and unbroken but an exception is made for Wavellite. This piece is of course from Garland County, Arkansas. the field of view is 3" (7.6cm) (Author: Jim Prentiss)

Well her is "another" ph

When I first started doing this list I was going to not do any repeats, however I have a good excuse in this specimen of Wavellite from the type locality at the High Down Quarry, Filleigh, North Devon, Devon, England. the specimen is 1 1/2" x 1" (3.81 x 2.54cm). I am also running out of different minerals at add to the list. (Author: Jim Prentiss)

When I first started doing this li