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Mineralati

Minerals

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Dark brown, almost black crystals of the rare vanadium mineral bokite from one of the few localities known worldwide: Monument No2 Mine, Apache County, Arizona, United States of America. Mineral

Bokite

bokite

Formula
(Al,Fe)1.3(V⁵⁺,V⁴⁺,Fe³⁺)8O20·7.5H2O
Boleite Locality: Boleo District, Municipio de Mulegé, Baja California Sur, Mexico (Locality at mindat.org) Size: thumbnail, .8 x .7 x .7 cm Boleite This single crystal of Boleite has the typical cubic shape and famous iridescent azure blue color that the mineral is famous for. A very good thumb remarkable for its sharpness - most of this size start to accumulate a coating of pseudoboleite faces on the square faces of the boleite, distorting the cube over time. .8 x .7 x .7 cm Mineral

Boleite

boleite

Formula
KAg9Pb26Cu24Cl62(OH)48
:Locality: Dedestapolcsany, Borsod-Abaúj-Zemplén County, Hungary Size: 2.6 × 1.8 × 1.1 cm Description: Bolivarite is a very rare aluminium phosphate, related to evansite. In this specimen white bolivarite is filling vugs of a limonite matrix. This mineral was found as crusts and as a filling of cracks in some granitic rocks a few km from Pontevedra (Spain), on the road to Campo Lameiro. Its discoverers, Fernandez Navarro and Castro Barea, named it as a tribute to the eminent Spanish entomologist, exiled in Mexico after the Spanish Civil War, Ignacio Bolivar y Urrutia. Mineral

Bolivarite

bolivarite

Formula
Al2PO4(OH)3·4H2O
Mineral

Bolotinaite

bolotinaite
Boltwoodite, Calcite Locality: Rössing Mine, Arandis, Swakopmund District, Erongo Region, Namibia (Locality at mindat.org) Size: small cabinet, 7.1 x 5.0 x 2.2 cm Boltwoodite on Calcite Freestanding, 3-dimensional sprays of fine boltwoodite xls to 8mm make this a superb species specimen, but also overall its quite unusually aesthetic. Rare in this quality, boltwoodite comes at its best from this uranium mine. Mineral

Boltwoodite

boltwoodite

Formula
(K,Na)(UO2)(SiO3OH)·1.5H2O
Outstanding brown crystal aggregates of the extremely rare nickel mineral bonaccordite from the type and only known locality worldwide (Scotia Talc Mine, Bon Accord, Barberton, Ehlanzeni District, Mpumalanga Province, South Africa) and associated to green trevorite crystals. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Bonaccordite

bonaccordite

Formula
Ni2Fe³⁺O2(BO3)
Mohs
7
Mineral

Bonaccorsiite

bonaccorsiite

Formula
KK2Na3(Al6Si36)O84
Bonacinaite as a group of two lath-shaped light violet and eight dark purple-blue crystals in a very small void of a quartz–braunite matrix. Field of view: 0.3 mm. Picture: Giorgio Maria Bortolozzi. Mineral

Bonacinaite

bonacinaite

Formula
Sc(AsO4)·2H2O
Bonattite Locality: Raul Mine, Lima Department, Peru Light blue crust of Bonattite (analysed). Field of view 7 mm. Specimen and photo Leon Hupperichs. Mineral

Bonattite

bonattite
Outstanding orange-red bonazziite crystals associated to dark-red pararealgar from a new locality in China, the Lanmuchang mine (Qianxi'nan Prefecture, Guizhou Province), famous for its thallium minerals. Bonazziite (IMA 2013-141) is a polimorph of realgar and pararealgar. Mineral

Bonazziite

bonazziite

Formula
As4S4
Mineral

Bonshtedtite

bonshtedtite

Formula
Na3Fe²⁺(CO3)(PO4)
Mineral

Boojumite

boojumite
Arseniosiderite, Boothite Locality: Copper Basin District, Lander County, Nevada, USA (Locality at mindat.org) Size: small cabinet, 8.8 x 6.1 x 4.3 cm Boothite with Arseniosiderite According to MINDAT, "This mineral, fully hydrated copper sulphate, is very rare." This is a large specimen smothered in crystallized boothite, composed of stacks and sprays of agglomerated microcrystals. Acquired by John White in 1969. Ex. John White Collection. Mineral

Boothite

boothite

Formula
CuSO4·7H2O
Boracit, Mineralogisches Museum Bonn Mineral

Boracite

boracite

Formula
Mg3B7O13Cl
Mineral

Boralsilite

boralsilite

Formula
Al16B6Si2O37
Borax Locality: U.S. Borax open pit (Boron pit), U.S. Borax Mine (Pacific West Coast Borax; Pacific Coast Borax Co.; Boron Mine; U.S. Borax and Chemical Corp.; Kramer Mine; Baker Mine), Kramer Borate deposit, Boron, Kramer District, Kern Co., California, USA Borax crystals. J. Minette collection. Scale at bottom of image is one inch with a rule at one cm. Mineral

Borax

borax

Formula
Na2B4O5(OH)4·8H2O
Locality: No. 3 Mine, Huanggang Fe-Sn deposit (Huanggangliang Mine; Huanggang Mine), Hexigten Banner (Keshiketeng Co.), Ulanhad League (Chifeng Prefecture), Inner Mongolia Autonomous Region, China 2.9 cm. From a 2010 pocket. The small white crystals were determined to be cahnite by Paul Pohwat of the Smithsonian Institution – the first new locality for the species in 100 years. Rob Lavinsky Collection. Joe Budd photo. Mineral

Borcarite

borcarite

Formula
Ca4Mg(B4O6(OH)6)(CO3)2
Mineral

Borisenkoite

borisenkoite

Formula
Cu3[(V,As)O4]2
Mineral

Borishanskiite

borishanskiite

Formula
Pd1+x(As,Pb)2 , x = 0-0.2
Whitish (somewhat platy) bornemanite with brownish (mainly beige) platy lomonosovite from the type locality for bornemanite: Yubileinaya Pegmatite, Lovozero Massif, Kola, Russian Federation. Mineral

Bornemanite

bornemanite

Formula
Na6(Na☐)Ba2Ti2Nb2(Si2O7)4(PO4)2O4(OH)2F2
Mineral

Bornhardtite

bornhardtite

Formula
Co²⁺Co³⁺2Se4
Mohs
4
Bornite Locality: Dzhezkazgan Mine (Zhezkazgan Mine), Dzhezkazgan, Zhezqazghan Oblysy (Dzezkazgan Oblast'; Dzhezkazgan Oblast'; Djezkazgan Oblast'; Jezkazgan Oblast'), Kazakhstan (Locality at mindat.org) Field of view 7 mm. Specimen and photo Leon Hupperichs. Mineral

Bornite

bornite

Formula
Cu5FeS4
Mohs
3
Hexagonal tan platy crystal of borocookeite with almost no matrix. Borocookeite is an extremely rare Li-Al borosilicate mineral, known from only two localities worldwide. From: Ze Pinto, Conselheiro Pena, Doce Valley, Minas Gerais, Brazil. Mineral

Borocookeite

borocookeite

Formula
Li1+3xAl4-x(BSi3O10)(OH)8
Mineral

Borodaevite

borodaevite

Formula
Ag5(Bi,Pb,Fe)8(Sb,Bi)2S17