1568 Rosickýite, Unspecified offshore drill hole (Pacific Ocean), Ventura Co., California, USA
Tiny yellow crystals. Width of view 11.5mm. Stack of 35 images. Click on the image below for a higher resolution version.
United States
1453 Gold, California, USA
11 well-formed gold crystals. Ex Hugh Ford. Ex Eugene Carmichael, number 1401.
1240 Cuprite, Copper Queen Mine (Halero Mine), Queen Hill, Bisbee, Warren District, Mule Mts, Cochise Co., Arizona, USA
Copper crystals showing dissolution features. Ex Arthur L Flagg Collection, 1937. Ex Trevor Boyd Collection.
1224 Gold, Bisbee, Warren District, Mule Mts, Cochise Co., Arizona, USA
Gold in matrix, 10x5mm. Ex Roland Fogg MM Collection, 1971. Ex Trevor Boyd Collection.
1219 Calcite, after Aragonite, Fort Collins area, Larimer Co., Colorado, USA
Pseudomorph. Labelled as calcite ps hanksite, Larimer Co., California. Described as rarely seen pseudomorph with label indication that it was in the American Museum Natural History and dated 12/11/78. Diameter is 2.5 cm. There are...
1221 Silver, McMillanville (McMillanville District), Globe Hills, Globe Hills District, Globe-Miami District, Gila Co., Arizona, USA
A dense aggregate of native silver wires, 9x6mm. Ex Roland Fogg MM Collection, 1967. Ex Trevor Boyd Collection.
1073 Chlorapatite, South Dakota, USA
ex H.Worner Collection #63
1061 Copper, Bisbee, Arizona
A mass of solid copper, whose crystallization is mostly crude. However a few distinct crystals reaching 1.1 cm are present. This specimen is almost completely free of green patina. Weighs 164 grams. 6.1×5.0x 3.3cm from...
1062 Copper, Bisbee, Warren District, Cochise County, Arizona
A mass of solid copper, whose crystallization is mostly crude. However a few distinct crystals reaching 1.1 cm are present. This specimen is almost completely free of green patina. Weighs 164 grams. 6.1×5.0x 3.3cm from...
1016 Gold, Second Broad river, Rutherford Co., North Carolina, USA
Four gold nuggets panned by Charles Willett in Second Broad River, Near Marion,, Rutherford Co., mounted on cork post (standard micromount support).
1013 Gold, Dahlonega, Lumpkin Co., Georgia, USA
Gold nugget panned by E Lee Wood. Mounted by Charles Willett on a cactus needle.
0963 Stilbite, Chlorite (Corrensite?), Natrolite, Kibblehouse Quarry, Perkiomenville, Marlborough Township, Montgomery Co., Pennsylvania, USA
Neal Yedlin mount. The label is affixed atop another label on one of the old carboard micromount display cases as were popular in the first half of the 20th Century. Display face measures 1.6×1.6cm. Specimen...
0806 Halotrichite, Flux Mine (Goshen Mine), Flux Gulch, Alum Gulch, Harshaw District, Patagonia Mts, Santa Cruz Co., Arizona, USA
A vintage David Shannon (with label) thumbnail with a 32x22mm display face. It makes for a prize-worthy halotrichite thumbnail in its own right.
0803 Metatorbernite, Heulandite, Ray Mine, Scott Mountain area, Mineral Creek District (Ray District), Dripping Spring Mts, Pinal Co., Arizona, USA
Said to be uncommon at the Ray Mine, this metatorbernite is beautiful and hardly even looks hydrated enough to be metatorbernite. Perched upon a bed of clear white heulandite crystals, this all makes for a...
Deaccessioned 0654 Halite, Detroit Salt Company Mine (International Salt Company Mine), Detroit, Wayne Co., Michigan, USA
Excellent colourless transparent cubic crystals reaching 2.2 cm in diameter and is basically all halite with the large clear crystals on the top of the piece growing on a much smaller light tan crystal base....
0537 Veszelyite, Black Pine Mine (Combination Mine; Black Pine Tailings; Black Pine Dump), Flint Creek Valley, John Long Mts, Philipsburg District (Flint Creek District), Granite Co., Montana, USA
Ex Joan Lamond 3195, but number does not match her Micro Collection Catalogue. Probably from her other mineral collection. Typical blue coloured crystals off matrix.
0519 Guettardite, Brobdignag Mine, Anvil Mountain, Red Mountain District, San Juan Co., Colorado, USA
Labelled as from Ouray, but probably Brobdignag Mine. Black lusterous material in vugs in broken surface of the specimen.
0464 Sanidine, White Springs, Oregon, USA
Mounted on cork by the the late famous all-time master of micromounting, Neal Yedlin in a vintage cardboard box bearing his personal label on which he hand wrote the ID. Jack Slagle photos.
0421 Northupite, Searles Lake, San Bernardino Co., California, USA
Type locality. Single crystal from the 350 foot level. Collected around 1970.
0362 Iodargyrite, Belmont mine, Belmont District, Nye Co., Nevada, USA
Microcrystals in silicified rhyolite. Ex John L Baum. Ex Franklin Mineral Museum
0355 Terlinguaite, Mariposa Mine (California Mountain Mine), Terlingua District, Brewster Co., Texas, USA
5x1mm area of flat-lying yellow-green terlinguaite crystals on 13mm wide matrix. Rare mercury mineral
0213 Millerite, Calcite, Grays Quarry, Hamilton, Hancock Co., Illinois
Millerite inclusions in calcite. Ex G. Tribbey, ex Delbert L. Oswald Coll.
0202 Corrensite, Chabazite, Stilbite, Kibblehouse Quarry, Perkiomenville, Marlborough Township, Montgomery Co., Pennsylvania
Tiny brown xls of this clay mineral coating chabazite rhombs with stilbite xls. Best with 30-40x
0182 Cinnabar, New Idria Mine (New Idria group; New Hope vein), Idria (New Idria), New Idria District, Diablo Range, San Benito Co., California
Multiple single crystals on matrix. Ex Paul Desautels, ex Delbert. L. Oswald Coll.
0178 Iridosmine, California, USA
Mounted on disk (5mm) on balsa pedestal in micromount box (2.2 x 2.2 x 2.0 cm) a specimen of multiple small nuggets. Ex Delbert L. Oswald. Ex Carnegie Museum #12327. Ex George English and Co.
0154 Iridosmine, California, USA
Mounted on disk (5mm) on balsa pedestal in micromount box (2.2 x 2.2 x 2.0 cm) a specimen of multiple small nuggets. Ex Delbert L. Oswald. Ex Carnegie Museum #12327. Ex George English and Co.
0059 Markcooperite, Timroseite, Khinite, Bird Nest drift, Otto Mountain, Baker, San Bernardino Co., California, USA
Orange markcooperite, yellow timroseite and green khinite
4598 Dundasite, Rosasite, Juanita Mine, Magdalena, Socorro Co., New Mexico, USA
White tufts of dundasite sit atop a ball of rosasite on this specimen originally mounted by the late Micromount Hall of Famer, Bill Henderson. Photo width is 3.33mm.
5560 Boleite, Cerussite, Mammoth-Saint Anthony Mine, Tiger, Pinal Co., Arizona
More than just simple cubes on these boleite crystals! Ex Bill Henderson Collection. Ex Forrest Cureton. Photo width 3.33mm.
4674 Calderónite, Christmas, Arizona
Calderónite crystals from the C and B Mine, Christmas, Dripping Spring Mts, Gila Co., Arizona.
4989 Plášilite and Manganoblödite, Blue Lizard Mine, Utah
Plášilite (yellow), and manganoblödite (pink), from the Blue Lizard Mine, Red Canyon, White Canyon District, San Juan Co., Utah. Plášilite is also recorded from one other locality, the nearby Green Lizard Mine. And manganoblödite is...
4990 Sideronatrite on Asphaltum, Blue Lizard Mine, Utah
Sideronatrite on Asphaltum, Blue Lizard Mine, Red Canyon, White Canyon District, San Juan Co., Utah, USA.
4991 Belakovskiite, Blue Lizard Mine, Utah
So far, seventeen minerals new to science have been described from this mine. This is another one of them. Belakovskiite as tiny pale silky fibres (mainly in the bottom left of the photo), with a...
4992 Natrozippeite, Blue Lizard Mine, Utah
Natrozippeite, one of a number of bright yellow minerals from the Blue Lizard Mine, Red Canyon, White Canyon District, San Juan Co., Utah, USA. Thin bladed crystals and aggregates.
4993 Natrozippeite and Brochantite, Blue Lizard Mine, Utah
A specimen of natrozippeite, this one with brochantite from the Blue Lizard Mine, Red Canyon, White Canyon District, San Juan Co., Utah, USA. Yellow thin bladed crystals of natrozippeite with green aggregates of brochantite.
1008 Monazite, Juniper Flats, Nuevo, Lakeview Mts, Riverside Co., California
A single doubly-terminated crystal of monazite (dominant REE unknown), Cross Hill, Juniper Flats, Nuevo, Lakeview Mts, Riverside Co., California, USA.
4038 Cheralite, Euxenite-(Y), Uranium King Mine, Encampment, Carbon Co., Wyoming
A mix of cheralite (reddish-brown) and euxenite-(Y) (black) from the Uranium King Mine, Encampment, Encampment District, Carbon Co., Wyoming, USA. Ex Jim Ferraiolo.
5500 Mixite, Chrysocolla, Gold Hill Mine, Tooele Co., Utah
A lovely shade of green mixite and blue chrysocolla, from the Gold Hill Mine (Western Utah Mine), Gold Hill, Gold Hill District (Clifton District), Deep Creek Mts, Tooele Co., Utah, USA.
4688 Vanadinite, Macy Mine, Hillsboro, Sierra Co., New Mexico, USA
A cute pair of hexagonal vanadinite crystals from the Macy Mine (Percha Mine; Vanadinite Mine; J. C. Macy claim; Barking Frog; Bobbee De claim), Percha Creek, Hillsboro, Hillsboro District, Sierra Co., New Mexico, USA.
1764 Sphalerite, Pyrite, Quartz, Eagle Picher Mine, Oklahoma, USA
A pyrite crystal is perched on orange-red sphalerite, on a bed of colourless quartz crystals, from the Eagle Picher Mine, Cardin, Picher Field, Tri-State District, Ottawa Co., Oklahoma, USA.
8048 M2750 Veszelyite, Black Pine Mine, Montana, USA
A deep blue veszelyite from the Black Pine Mine (Combination Mine; Black Pine tailings; Black Pine dump), Black Pine Ridge, John Long Mts, Philipsburg District (Flint Creek District), Granite Co., Montana, USA. Ex Bernie Day...
10001 Calcite, Fluorite, Hill-Ledford Mine, Cave-in-Rock, Hardin Co., Illinois, USA
Tiny cream calcite crystals on dark purple fluorite from the Hill-Ledford Mine, Cave-in-Rock, Cave-in-Rock Sub-District, Illinois – Kentucky Fluorspar District, Hardin Co., Illinois, USA. Largest fluorite 65mm across. Mined in the late 1950s or early...
10005 Hydroxyapophyllite-(K), Prehnite, Stilbite, Laumontite, Fairfax quarry, Centreville, Fairfax Co., Virginia, USA
Blocky opaque apophyllite with minor colourless stilbite and white laumontite on green prehnite. 65x45x10mm. Ex Joe Cilen (7403). Ex Eugene Carmichael (562). Hydroxyapophyllite-(K), prehnite, stilbite, laumontite, from the Fairfax quarry (Centreville Quarry; Sisslers Quarry), Centreville,...
2178 Strengite, Cacoxenite, Kidwellite, Rockbridgeite, Vivianite, Indian Mountain, Cherokee Co, Alabama, USA
Purple strengite crystals, brownish-black rockbridgeite, orange botryoidal cacoxenite, and minor kidwellite. Part of the matrix appears to be vivianite. Width of view 11.5mm. Stack of 70 images. Click on the image below for a higher...
1017 Microlite, Hollister Quarry, South Glastonbury, Hartford Co., Connecticut, USA
A 5mm wide pair of microlite group crystals from the Hollister prospects (Hollister Quarry), South Glastonbury, Glastonbury, Hartford Co., Connecticut, USA.
1651 Wavellite, Clear Spring Mine, Homeland, Polk Co., Florida, USA
A plug for Mindat! I have had this specimen for many many years, and it was labelled simply wavellite, Bartow, Florida. The only Bartow in Mindat is in Georgia. So I used the Photo Search...
4076 Smythite, State Route 37 road cut (6), Bloomington, Monroe Co., Indiana, USA
Smythite crystals in calcite from the Type Locality, State Route 37 road cut (6), Bloomington, Monroe Co., Indiana, USA. If you squint a little, you can make out the hexagonal outline. Specimen given to me...
1455 Pyrite, Pint’s Quarry, Raymond, Black Hawk Co., Iowa, USA
Interesting bipyramidal pyrite crystals, somewhat altered to brown goethite (although you can see some original pyrite peeking through on the edges) on calcite from Pint’s Quarry, Raymond, Black Hawk Co., Iowa, USA. The main cluster...
10021 Galena, Ballard Mine, Baxter Springs, Kansas, USA
Cubes of galena with tiny pyrite cubes and minor reddish sphalerite from the Ballard Mine, Baxter Springs, Picher Field, Tri-State District, Cherokee Co., Kansas, USA. Specimen is 42mm wide. Ex Eugene Carmichael Collection (EWC 2295),...
1078 Fluorite, Dolomite, Irvington Quarry, Breckinridge Co., Kentucky, USA
Purple fluorite nestled in amongst dolomite crystals from Liter’s Quarry (Hanson Aggregates Irvington Quarry), Breckinridge Co., Kentucky, USA. While looking at this through my microscope, I assumed it was a cube of fluorite, but the...
0821 Foitite, Elbaite, Mt Mica, Paris, Maine, USA
A zoned tourmaline, part foitite, part elbaite, according to the label, from the Mount Mica Quarry (Mount Mica Mine), Paris, Oxford Co., Maine, USA. It has broken at some point in its geological past, and...
1363 Realgar, Orpiment, Getchell Mine, Adam Peak, Humboldt Co., Nevada, USA
Red realgar and yellow orpiment from the Getchell Mine (North Pit; Center pit; South pit), Adam Peak, Potosi District, Osgood Mts, Humboldt Co., Nevada, USA. Interesting to see the crystallisation of each species seemingly oriented...
5534 Cacoxenite, Mason Pass, Yerington, Lyon Co., Nevada, USA
Fibrous to acicular crystals of cacoxenite from Mason Pass, Yerington, Yerington District, Singatse Range, Lyon Co., Nevada, USA. Ex Hatfield Goudey (of goudeyite fame). Ex John Lewis Collection.
5535 Bornite after Chalcocite, Belmont Mine, Butte, Silver Bow Co., Montana, USA
Bornite pseudomorph after chalcocite, Belmont Mine, Butte, Butte District (Summit Valley District), Silver Bow Co., Montana, USA. Labelled as A Vein, 3000 Level. Ex Hatfield Goudey. Ex John Lewis Collection.
5551 Kinoite, Hydroxyapophyllite-(K), Christmas Mine, Christmas, Gila Co., Arizona, USA
Striking blue kinoite on colourless crystals of hydroxyapophyllite-(K) from the Christmas Mine (Red Bird shafts; Inspiration Mine; Hackberry shafts), Christmas, Christmas area, Banner District, Dripping Spring Mts, Gila Co., Arizona, USA. One of my favourite...
5554 Kidwellite, Indian Mountain, Cherokee Co., Alabama, USA
Fragile tufted kidwellite from Indian Mountain, Cherokee Co., Alabama, USA. Collected in or before 1983.
10028 Barite, Fluorite, Quartz, Wulfenite, Unknown black needles, Blue Star prospect, South Canyon District, Dona Ana Co., New Mexico, USA
Colourless and purple fluorite cubes and colourless quartz crystals on white barite. Minor yellow wulfenite. Unknown black needles.
6046 Wulfenite, Mimetite, Red Cloud Mine, Silver District, Trigo Mts, La Paz Co., Arizona, USA
Classic Red Cloud wulfenite crystal group with tiny mimetite crystals.
