7381 JL2315 Theisite, Aurichalcite, Tuckerville prospects, Hinsdale Co., Colorado, USA
Type Locality for theisite. Incorrectly labelled as La Plata Co. (refer comment in Mindat). Acquired by Joan Lamond in 1997 from a Swiss Collection for $2.00.
Colorado
3940 Microcline (Amazonite), Glacier Peak mines, Florissant, Teller Co., Colorado, USA
Dehne McLaughlin 2/2005 Video best viewed full screen.
30072 Rhodochrosite, Quartz, Sunnyside Mine, Bonita Peak, Gladstone, Eureka Mining District, San Juan Co., Colorado, USA
Rhodochrosite epimorphs after ?? With tiny quartz crystals. Ex Barry Johnson Collection. Video best viewed full screen.
ncat VHD11, Carnelian, Durango, Mesa Co., Colorado, USA
Pseudo after crinoid stem
ncat VHD10, Rhodochrosite, Quartz, Sunnyside Mine, Silverton, San Juan Co., Colorado, USA
Ex Keith Williams, Williams Minerals. LB Collection.
3692 Tungstite, Adams Mine (Adams Tunnel Mine), Cement Creek, Eureka Mining District, San Juan Co., Colorado, USA
Pale yellow crust on quartz. Not listed in Mindat, but hubnerite is. According to Rock Currier, almost all hubnerite specimens from this mine have been etched out of quartz using hydrofluoric acid.
3695 Coloradoite, Cripple Creek, Colorado, USA
Grey mass of coloradoite with brassy pyrite. Ex Ruth Coulsell Collection #133.
4722 Topaz, Tarryall Mts, Park Co., Colorado, USA
Single crystal. Ex Dave Bunk Minerals., Jim Mcewan, Lehigh Minerals
5587 Magnesiopascoite, Carnotite, Packrat Mine, Gateway, Gateway District, Mesa Co., Colorado, USA
Orange. Highly fluorescent yellow is likely carnotite., Al Wilkins
10010 Anglesite, Colorado, USA
Drusy micro anglesite crystals on matrix. Ex US National Museum (Smithsonian) Collection, Department of Minerals, catalogue number 14121. Ex Hawes Collection acquired in 1884.
4652 Sidwillite, Lake Como, San Juan Co., Colorado, USA
Type Locality. Tiny yellow patches on matrix. Ex Wolfgang Henkel.
4601 Hessite, Red Cloud Mine (Chicago; Colorado Occurrence), Gold Hill District, Boulder Co., Colorado, USA
ex John Muntyan – Colorado School of Mines Geology Museum :92C3
6003 Sylvanite, Cripple Creek, Teller Co., Colorado, USA
Loose crystal aggregate. Bought at Tucson 2012
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...
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.
