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Mineral

Um1993-29-Teo:aupb

UM1993-29-TeO:AuPb
Umangite, Clausthalite Locality: Sierra de Cacheuta, Mendoza, Argentina (Locality at mindat.org) Size: 4.2 x 3.8 x 1.3 cm. There is a lot more than clausthalite in here. I am told that if you have purple (and you do, visible, here), you have umangite; and it’s a good bet there is klockmannite as well, and potentially all kinds of other good things. This specimen also contains Copper selenides because of the green secondaries. The non-metallic blue on there is likely chalcomenite, in fact. These specimens were presented to the academy by Casimiro Domeyko, who did much work on the rare minerals of Chile and Argentina. Ex. Academy of Natural Sciences Philadelphia Collection. Mineral

Umangite

umangite

Formula
Cu3Se2
Pinkish white crystals of the rare zirconium mineral umbite named after the Lake Umb, 20km east of the type occurrence in Vuonnemiok River Valley (Khibiny Massif, Murmansk Oblast, Russian Federation). Ex.DrHartel collection. Mineral

Umbite

umbite

Formula
K2ZrSi3O9·H2O
Umbozerite (red arrow) from Karnasurt Mt., Lovozero Massif, Kola, Russia, specimen width: 4.2cm Mineral

Umbozerite

umbozerite

Formula
Na3Sr4ThSi8(O,OH)24
Mineral

Umbrianite

umbrianite

Formula
K7Na2Ca2[Al3Si10O29]F2Cl2
red-brown Umohoite from Mas d´Allary, Herault, Languedoc-Roussillon, France, FOV 6mm Mineral

Umohoite

umohoite

Formula
(UO2)(MoO4)(H2O)·H2O
Mineral

Ungavaite

ungavaite

Formula
Pd4Sb3
Mineral

Ungemachite

ungemachite

Formula
K3Na8Fe³⁺(SO4)6(NO3)2·6H2O
Mineral

Upalite

upalite

Formula
Al(UO2)3(PO4)2O(OH)·7H2O
White crystals of the rare borate mineral uralborite from the type locality for the mineral (Novofrolovskoye B-Cu Deposit, Turjinsk, Urals Region, Russian Federation) and only one of the two known mineral localities worldwide. Mineral

Uralborite

uralborite

Formula
CaB2O2(OH)4
White acicular crystals of the very rare calcium beryllium phosphate mineral uralolite from one of the few localities known worldwide (Eitzing Quarry, Waldkirchen, Bavaria, Germany). Mineral

Uralolite

uralolite

Formula
Ca2Be4(PO4)3(OH)3·5H2O
Mineral

Uramarsite

uramarsite

Formula
(NH4)(UO2)(AsO4)·3H2O
Mineral

Uramphite

uramphite

Formula
NH4(UO2)PO4·3H2O
Mineral

Urancalcarite

urancalcarite

Formula
Ca(UO2)3(CO3)(OH)6·3H2O
Author is Joachimsthal,Bohemia,Czechoslovakia Creative commons http://minerals.no-ip.com/Minerals/html/Pichblende1.html Mineral

Uraninite

uraninite

Formula
UO2
Uranocircite Locality: São Pedro claim, Malacacheta, Mucuri valley, Minas Gerais, Southeast Region, Brazil (Locality at mindat.org) This has to be one of the hands-down , most gorgeous examples for the species I have ever seen. It is a stunning miniature, with arborescent clusters of vivid neon-yellow/green crysatls arranged upon a knob of matrix. The piece is good from ALL SIDES, and is complete 360 degrees. You could not ask for better, I think. Although one of the more common radioactives per se, aesthetic , display-quality examples are NOT so common. These were mined some 20-30 years ago, I have been given to understand. 3.7 x 3.5 x 3.1 cm Mineral

Uranocircite

uranocircite

Formula
Ba(UO2)2(PO4)2·10H2O
Mineral

Uranocircite-I

uranocircite-I

Formula
Ba(UO2)2(PO4)2·12H2O
Mineral

Uranoclite

uranoclite

Formula
(UO2)2(OH)2Cl2(H2O)4
Uranophane. Mineral collection of Bringham Young University Department of Geology, Provo, Utah. Photograph by Andrew Silver. No BYU index, Ca(UO_2)_2Si_2O_7 x 6(H_2O). Mineral

Uranophane

uranophane

Formula
Ca(UO2)2(SiO3OH)2·5H2O
Uranopilite Locality: Shinkolobwe Mine (Kasolo Mine), Shinkolobwe, Central area, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre) (Locality at mindat.org) Field of view 4 mm. Specimen and photo Leon Hupperichs. Mineral

Uranopilite

uranopilite

Formula
(UO2)6SO4O2(OH)6·14H2O
Mineral

Uranopolycrase

uranopolycrase

Formula
UTi2O6
Mineral

Uranosilite

uranosilite

Formula
(UO2)Si7O15
Pale-green lath-like uranospathit from Krunkelbach mine, Menzenschwand, Germany (field of view: 8 mm) Mineral

Uranospathite

uranospathite

Formula
(Al,☐)(UO2)2F(PO4)2·20H2O
Mineral

Uranosphaerite

uranosphaerite

Formula
Bi(UO2)O2(OH)