North and Central Americas
1684 Willemite, Mimetite, Red Cloud Mine, Silver District, Trigo Mts, La Paz Co., Arizona, USA
Old mount with label of Yuma Co which predatesthe split of Yuma into the La Paz and Yuma counties.
1597 Stilbite-(Ca), Sterling Hill, Ogdensburg, Franklin Mining District, Sussex Co., New Jersey, USA
Colourless crystals partly on epidote. Ex Bob Trimingham Collection #T-10527, acquired by him in 1987, purchased for $5 from Parker Minerals. Marked at US$8 by Jewel Tunnel Imports, but Keystone.
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.
1478 Birnessite, Serandite, Leucophanite, Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carriere Mont Saint-Hilaire), Mont Saint-Hilaire, La Vallee-du-Richelieu RCM, Monteregie, Quebec, Canada
Brown-black birnessite pseudomorph after a prismatic 20mm serandite crystal with no matrix attached. The serandite crystallized first, the birnessite replaced the serandite atom-by-atom maintaining the crystal form, but changing the composition. Green crystals are leucophanite....
1481 Gruzdevite, Tellurite, Moctezuma Mine (Bambolla Mine), Moctezuma, Mun. de Moctezuma, Sonora, Mexico
Yellow-green tellurite. Grey-metallic gruzdevite microcrystals are embedded in the matrix. Ex Excalibur Minerals. Ex Eugene Carmichael Collection number 1026. Ex John Betts number 58658.
1453 Gold, California, USA
11 well-formed gold crystals. Ex Hugh Ford. Ex Eugene Carmichael, number 1401.
1276 Sonoraite, Emmonsite, Moctezuma Mine (Bambolla Mine), Moctezuma, Mun. de Moctezuma, Sonora, Mexico
Single platey crystal of yellowish sonoraite with green emmonsite.
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...
0794 Xanthoconite, Proustite, Dyscrasite, O’Brien Mine, Coleman Township, Cobalt area, Cobalt-Gowganda region, Timiskaming District, Ontario, Canada
Vintage micro. This specimen was part of the collection of micromount Hall of Famer (ind. 1997) Bill Henderson. According to Henderson’s label, Neal Yedlin, the most renowned of all micromounters, originally placed it into circulation,...
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.
0526 Silver, New Nevada Mine, Cerro San Antonio, San Miguel, Batopilas, Chihuahua, Mexico
Listed as Newny Mine but likely New NV (New Nevada). Numerous Native Silver crystals in a ‘v’ form with an irridescent lustre.
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.
0426 Boleite, Amelia Mine, Santa Rosalia (El Boleo), Boleo District, Mun. de Mulege, Baja California Sur (BC Sur), Mexico
Boxed micromount with several cubic deep blue boleite crystals on matrix. These form in clay seams, so matrix specimens are fairly uncommon.
0424 Boleite, Pseudoboleite, Atacamite, Anglesite, Amelia Mine, Santa Rosalia (El Boleo), Boleo District, Mun. de Mulege, Baja California Sur (BC Sur), Mexico
Boxed micromount with 6 tiny xl specimens mounted on a card. Specimens clockwise from top left: boleite cuboctahedron, cluster of boleite cuboctahedrons, pseudoboleite on boleite, atacamite, boleite cubes on white anglesite crystals. Centre: boleite cube.
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.
0204 Nifontovite, Rey y Reina Mine (King and Queen Mine), Charcas, Mun. de Charcas, San Luis Potosi, Mexico
From the 16/200 Level. Glassy, transparent xls on matrix. Best with 10-20x. Collected by Michael Shannon January, 2010
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.
0095 Zemannite, Moctezuma Mine (Bambolla Mine), Moctezuma, Mun. de Moctezuma, Sonora, Mexico
Large prismatic yellow crystals of zemannite in quartz vugh
0079 Kuranakhite, Gold, Tellurium, Moctezuma Mine (Bambolla Mine), Moctezuma, Mun. de Moctezuma, Sonora, Mexico
Tiny brown puffballs of kuranakhite with dark yellow gold and silver tellurium
0059 Markcooperite, Timroseite, Khinite, Bird Nest drift, Otto Mountain, Baker, San Bernardino Co., California, USA
Orange markcooperite, yellow timroseite and green khinite
0039 Poughite, Schmitterite, Moctezuma Mine (Bambolla Mine), Moctezuma, Mun. de Moctezuma, Sonora, Mexico
Greenish-yellow spheres of poughite with tiny yellow tufts of schmitterite
0013 Paratellurite, Tellurite, Quartz, Moctezuma Mine (Bambolla Mine), Moctezuma, Mun. de Moctezuma, Sonora, Mexico
Masses of creamy plates of paratellurite with yellow tellurite
0012 Kuranakhite, Gold, Tellurium, Moctezuma Mine (Bambolla Mine), Moctezuma, Mun. de Moctezuma, Sonora, Mexico
Tiny brown puffballs of kuranakhite with dark yellow gold and silver tellurium
0004 Chrysocolla, Boleite, Pseudoboleite, Santa Rosalia (El Boleo), Boleo District, Mun. de Mulege, Baja California Sur (BC Sur), Mexico
Pseudomorph of chrysocolla after boleite and pseudoboleite. From near to the Amelia Mine. Too fragile to mount so nestled in tissue.
0005 Schmitterite, Emmonsite, Moctezuma Mine (Bambolla Mine), Moctezuma, Mun. de Moctezuma, Sonora, Mexico
Schmitterite as tiny yellow to cream sprays, emmonsite green
