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Mineralati

Minerals

6323 results

Mineral

Bernwoodite

bernwoodite

Formula
Ca5TiAl2Si2O14
Black acicular crystals of the rare Pb-Ag sulphide from a Colorado locality: Mike Mine, San Juan Co., Colorado, United States of America. Microprobed by Sid Williams. Ex Hartel collection. Mineral

Berryite

berryite

Formula
Cu3Ag2Pb3Bi7S16
Berthierine Field of view 3.3 mm x 2.5 mm Locality Poudrette quarry (De-Mix quarry; Demix quarry; Uni-Mix quarry; Carrière Mont Saint-Hilaire; MSH), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada Description Small part of an old Ron Waddell specimen. Visually confirmed by Dr. Andre Lalonde. Mineral

Berthierine

berthierine

Formula
(Fe²⁺,Fe³⁺,Al)3(Si,Al)2O5(OH)4
Mohs
2.5
Berthierite. Pen for scale.No locality given. Mineral collection of Bringham Young University Department of Geology, Provo, Utah. Photograph by Andrew Silver. BYU index 3-4010, FeS - Sb_2S_3. Mineral

Berthierite

berthierite

Formula
FeSb2S4
Yellow white crystal aggregates of the very rare Li-mineral bertossaite associated to blue burangaite from the TL for both minerals: Buranga Pegmatite, Gatumba, Ngororero District, Western Province, Rwanda. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Bertossaite

bertossaite

Formula
(Li,Na)2(Ca,Fe²⁺,Mn²⁺)Al4(PO4)4(OH,F)4
Bertrandite Locality: Golconda pegmatite, Governador Valadares, Doce valley, Minas Gerais, Southeast Region, Brazil (Locality at mindat.org) Size: 6.2 x 4.2 x 2 cm. Distinctive sparkling crust composed of hundreds upon hundreds of gemmy clear Bertandite crystals in the 1-2 mm range. Mineral

Bertrandite

bertrandite

Formula
Be4Si2O7(OH)2
Beryl with hydromuscovite and feldspar. Augsburg Naturmuseum. Mineral

Beryl

beryl

Formula
Be3Al2Si6O18
Mohs
7.5–8
Colour
Colourless, green, blue, yellow, pink
Mineral

Beryllite

beryllite

Formula
Be3(SiO4)(OH)2 * H2O
Mineral

Beryllocordierite-Na

beryllocordierite-Na

Formula
NaMg4(Al5Be)(AlSi5O18)2·2H2O
Beryllonite (whitish) with tourmaline variety indicolite (blue). Locality: Paprok, Nuristan Province, Afghanistan (Nuristan Province was formed in 2001 from parts of Laghman and Kunar Provinces). Specimen size 4 cm. Mineral

Beryllonite

beryllonite

Formula
NaBePO4
Berzelianite, Calcite Locality: Skrikerum Mine (Skrickerum Mine), Valdemarsvik, Östergötland, Sweden Size: 5.4 cm x 3.6 cm x 3.4 cm Berzelianite is a rare copper selenide and this old-time specimen is from the Type Locality in Sweden. Silvery bright berzelianite flakes and plates are included in calcite. The calcite fluoresces a modest purple. Ex. Charles Velte Collection. Highly representative. Mineral

Berzelianite

berzelianite

Formula
Cu2-ₓSe (x~0.12)
Berzeliite (Size: 70 mm x 60 mm x 30 mm; field of view 14 mm) Locality: Långban, Filipstad, Värmland, Sweden Yellow berzeliite in calcite Mineral

Berzeliite

berzeliite

Formula
(NaCa2)Mg2(AsO4)3
Mineral

Beshtauite

beshtauite

Formula
(NH4)2(UO2)(SO4)2·2H2O
Betekhtinite Locality: Dzhezkazgan Mine (Zhezkazgan Mine), Dzhezkazgan, Zhezqazghan Oblysy (Dzezkazgan Oblast'; Dzhezkazgan Oblast'; Djezkazgan Oblast'; Jezkazgan Oblast'), Kazakhstan (Locality at mindat.org) Size: 3.6 x 1.7 x 1.6 cm. Betekhtinite is a rare copper, iron, lead sulfide and this is a superb example from a now-famous discovery of 1998, which produced the best of the species known for this mineral to date. Lustrous, metallic-gray, parallel-growth needles to 2.8 cm comprise this fine piece from the Twin Pocket, Mine # 31at Dzhezkazgan. Mineral

Betekhtinite

betekhtinite

Formula
(Cu,Fe)21Pb2S15
Betpakdalite Locality: Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia (Locality at mindat.org) Size: 5.9 x 2.7 x 1.8 cm. This extremely rare arsenate shows bright yellow thin crusts and a superb complete sphere measuring almost 2 mm (atop-center), all of which contrast nicely with the dark gray metallic matrix. Ex. Willy Israel Collection. Mineral

Betpakdalite-Caca

betpakdalite-CaCa

Formula
[Ca2(H2O)17Ca(H2O)6][Mo6+8As5+2Fe³⁺3O36(OH)]
Mineral

Betpakdalite-Camg

betpakdalite-CaMg

Formula
[Ca2(H2O)17Mg(H2O)6][Mo⁶⁺8As⁵⁺2Fe³⁺3O36(OH)]
Mineral

Betpakdalite-Fefe

betpakdalite-FeFe

Formula
[Fe³⁺2 (H2O)15(OH)2Fe³⁺(H2O)6][Mo8As2Fe³⁺3 O37]
Lemon yellow crystals of the rare molybdenium mineral betpakdalite-NaCa from the type and only known locality worldwide: Kyzylsai Mo U Deposit, Chu-Ili Mountains, Almaty Province, Kazakhstan. This is part of the holotype material studied by the author. Mineral

Betpakdalite-Naca

betpakdalite-NaCa

Formula
[Na2(H2O)17Ca(H2O)6][Mo6+8As5+2Fe³⁺3O34(OH)3]
Mineral

Betpakdalite-Nana

betpakdalite-NaNa

Formula
[Na2(H2O)16Na(H2O)6][Mo⁶⁺8As⁵⁺2Fe³⁺3O33(OH)4]
Mineral

Bettertonite

bettertonite

Formula
Al6(AsO4)3(OH)9·16H2O
Mineral

Betzite

betzite

Formula
Na6Ca2(Al6Si6O24)Cl4
Beudantite Locality: Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia (Locality at mindat.org) Size: 2 x 2 x 1 cm. Realtively large, lustrous, colorful brown crystals of the rare mineral Beudantite to 7mm make this a world class thumbnail for the species! Mineral

Beudantite

beudantite

Formula
PbFe³⁺3(AsO4)(SO4)(OH)6
Colour
dark yellow, dark green, chartreuse, brown, black, red
Beusite, Lithiophilite Locality: La Empleada Pegmatite, Coronel Pringles Department, San Luis, Argentina Dimensions: 50 mm x 45 mm x 16 mm Description: Massive brown Beusite with dark Lithiophilite; Analyzed by Ricardo Scholz; Photo and collection Fernando Brederodes Mineral

Beusite

beusite

Formula
Mn²⁺Mn²⁺2(PO4)2
Mineral

Beusite-(Ca)

beusite-(Ca)

Formula
CaMn²⁺2(PO4)2