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Mineralati

Minerals

6323 results

Mineral

Grundmannite

grundmannite

Formula
CuBiSe2
Gruenerite Schist Metamorphic Rock North of Keystone, South Dakota Mineral

Grunerite

grunerite

Formula
☐Fe²⁺2Fe²⁺5Si8O22(OH)2
Mineral

Gruzdevite

gruzdevite

Formula
Cu6Hg3Sb4S12
Guanacoite Locality: El Guanaco Mine, Guanaco (Huanaco), Santa Catalina, Antofagasta Province, Antofagasta Region, Chile (Locality at mindat.org) Picture width 2 mm. Collection and photograph Christian Rewitzer Mineral

Guanacoite

guanacoite

Formula
Cu2Mg3(OH)4(AsO4)2·4H2O
Mohs
3
Guanajuatite Locality: Santa Catarina Mine, Rancho Calvillo, Santa Rosa, Sierra de Santa Rosa, Municipio de Guanajuato, Guanajuato, Mexico (Locality at mindat.org) Size: 2.4 x 1.4 x 1.1 cm. A small specimen of this very rare bismuth selenide species from the Type Locality. Year of Discovery: 1873. This must have ended up in the Bement collection SOON AFTER, in the late 1800s, since the collection was donated in 1910. Ex. American Museum of Natural History , Clarence Bement collection. Mineral

Guanajuatite

guanajuatite

Formula
Bi2Se3
Mineral

Guangyuanite

guangyuanite

Formula
Pb3Cl3(Se⁴⁺O3)(OH)
Yellow guanine crystals from the type locality (North Chincha Island, Pisco Province, Ica Department, Peru) and only one of the very few known localities worldwide. Original color of guanine is white but it darkens to yellow with exposure to light and time, as many organic compounds. Bodo Unger reported a new material that believed was xanthine in 1844. Einbrodt (1846) showed the identification was incorrect. Unger (1846) agreed, provided a full corrected description and named it guanine after the guano it was found in. Structural formula: NCHNHC2C(O)NHC(NH2)N. Aromatic heterocycle (an organic cyclic carbon compound with additional, non-carbon atom(s)); a nucleobase and an important constituent of both DNA and RNA. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Guanine

guanine
Deep pink microcrystals of the extremely rare mineral guarinoite from the type locality (Cap Garonne Mine, Le Pradet, Var, Provence-Alpes-Cote d'Azur, France) and one of the only two known localities worldwide. The mineral is one of the most sought after species from Cap Garonne. The species is a Co-Zn-Ni sulphate. Mineral

Guarinoite

guarinoite

Formula
Zn6(SO4)(OH)10·5H2O
Mineral

Guastoniite-(Y)

guastoniite-(Y)

Formula
Pb4(YCa)(Si8B4O28)F
Gudmundite Locality: Pezinok, Pezinok Co., Bratislava Region, Slovakia Dimensions: 5.0 cm x 4.9 cm x 2.1 cm This species gets its name from the Type Locality of Gudmundstorp, Sweden. Gudmundite is a relatively rare iron antimony sulfide, and good quality specimens are certainly few and far between. This relatively rich miniature piece features small bright, metallic, platy crystals on matrix from this vein-type antimony deposit in Slovakia. The crystals are <1mm, but some of them are beautiful under high magnification. Mineral

Gudmundite

gudmundite

Formula
FeSbS
Mineral

Guettardite

guettardite

Formula
PbAsSbS4
Gugiaite Field of view: 0.3 mm high Locality: Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy (locality at mindat.org) Mineral

Gugiaite

gugiaite

Formula
Ca2Be(Si2O7)
Mineral

Guidottiite

guidottiite

Formula
MnFe³⁺2(SiFe³⁺)O5(OH)4
Some grass green crystals and crystal aggregates of the extremely rare mineral guildite in a capsule from the type and only known locality worldwide: United Verde Copper Mine, Jerome, Arizona, United States of America. Mineral

Guildite

guildite

Formula
CuFe³⁺(SO4)2(OH)·4H2O
Guilleminite, Malachite Locality: Musonoi Mine, Kolwezi, Western area, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre) (Locality at mindat.org) Size: 4.3 x 4.2 x 3.2 cm. An exceptionally rich specimen featuring lemon-yellow, sub-mm crystals of the rare species Guilleminite on malachite. TYPE LOCALITY. Mineral

Guilleminite

guilleminite

Formula
Ba(UO2)3(Se⁴⁺O3)2O2·3H2O
Mohs
2
Guimarãesite Locality: Guimarãesite occurrence, Piauí valley, Taquaral, Itinga, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil (Locality at mindat.org) Green rounded aggregates. Field of view: 8 mm. Depth of field is achieved with CombineZM. Collection and photo: Leon Hupperichs. Mineral

Guimarãesite

guimarãesite

Formula
Ca2Be4Zn5(PO4)6(OH)4·6H2O
Mineral

Guite

guite

Formula
Co²⁺Co³⁺2O4
Mineral

Guixiangite

guixiangite

Formula
NiBiS
Mineral

Gungerite

gungerite

Formula
TlAs5Sb4S13
Mineral

Gunmaite

gunmaite

Formula
(Na2Sr)Sr2Al10(PO4)4F14(OH)12
Outstanding white crystals of the rare Zn sulphate mineral gunningite from the famous Bisbee deposit in Arizona (Bisbee, Warren District, Mule Mountains, Cochise County, Arizona, United States of America). Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Gunningite

gunningite

Formula
Zn(SO4)(H2O)
Colour
colorlessness, white
Mineral

Gunterite

gunterite

Formula
Na4Ca(V10O28)·20H2O
Single nugget of the extremely rare Fe-Si intermetallic mineral gupeiite (Fe3Si) from a locality in Russia (Nizhnii Tagil, Sverdlovsk Oblast, Russian Federation). Analyzed specimen. Mineral

Gupeiite

gupeiite

Formula
Fe3Si
:Locality: Gurim Anticline, Hatrurim Formation, Negev Desert, Israel Size: 1.4 × 1.1 × 0.3 cm Description: Gurimite is a very rare and chemically simple species. It is a barium vanadate, but in this sample we can observe the presence of P, very common on V minerals. This sample is from the type locality, the Gurim Anticline, in Israel. Aproved in 2013 and published in 2017. Specimen analyzed by Dr. M. Murashko. SEM image Mineral

Gurimite

gurimite

Formula
Ba3(VO4)2