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Minerals

6323 results

Mineral

George-Ericksenite

george-ericksenite

Formula
Na6CaMg(IO3)6(CrO4)2·12H2O
Outstanding colorless crystals of the very rare zirconium mineral georgechaoite from the type locality in New Mexico (Wind Mountain, Cornudas Mountains, Otero County, New Mexico, United States of America) and one of the very few known localities worldwide. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Georgechaoite

georgechaoite

Formula
NaKZr[Si3O9]·2H2O
Sky blue georgeite associated to blue chalconatronite. From: Carr Boyd Rocks Mine, Menangina Station, Menzies Shire, Western Australia, Australia. Mineral

Georgeite

georgeite

Formula
Cu2(CO3)(OH)2
Mineral

Georgeliuite

georgeliuite

Formula
Ca2Mn³⁺3O2(AsO4)3(H2O)2·H2O
Mineral

Georgerobinsonite

georgerobinsonite

Formula
Pb4(CrO4)2(OH)2FCl
Georgiadesite, Paralaurionite Locality: Vrissaki Point slag locality, Vrissaki area, Lavrion District slag localities, Lavrion (Laurion; Laurium) District, Attikí (Attica; Attika) Prefecture, Greece Monoclinic georgiadesite crystal on tabular paralaurionite xls. Picture width 3 mm. Collection and photograph Christian Rewitzer This Photo was Mindat.org Photo of the Day - 4th Mar 2010 Mineral

Georgiadesite

georgiadesite

Formula
Pb4(As³⁺O3)Cl4(OH)
Grey brown crystals of the rare mineral gerasimovskite on a contrasting matrix from the type (Karnasurt Mountain, Lovozero Massif, Northern Region, Russian Federation) and only one of the very few localities known worldwide. Mineral

Gerasimovskite

gerasimovskite

Formula
Mn²⁺(Nb,Ti)5O12·9H2O
Extremely rare mineral from Tsumeb! The mineral, that is only known from this locality worldwide, was labeled as "RRR: extremely rare: single occurrence with less than 10 specimens known" and "brown aggregates of minute crystals on the type specimen" in G.Gebhard Tsumeb II book (1999) when the mine was already closed (1996), so new discoveries will not take place in the future. This sample was in Gebhard collection and it's part of the type specimen, as proved by the label enclosed. Second oxidation zone. It occurs in this specimen as at least 5 typical brown balls on matrix. Mineral

Gerdtremmelite

gerdtremmelite

Formula
(Zn,Fe)(Al,Fe)2(AsO4)(OH)5
Mineral

Gerenite-(Y)

gerenite-(Y)

Formula
(Ca,Na)2(Y,REE)3Si6O18·2H2O
Crystal grown from wall to wall at the bottom of a geode of cuprite. Locality: Cerro Minado Mines, Cuesta Alta, Huércal-Overa, Almería, Andalusia, Spain. Photo 1 mm width. Collection and photo of Angel Romero Mineral

Gerhardtite

gerhardtite

Formula
Cu2NO3(OH)3
Germanite Locality: Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia (Locality at mindat.org) Size: 3.3 x 3.2 x 1.4 cm. This is a solid 23-gram specimen of germanite-rich ore from level 37 of the Tsumeb Mine, deep in its third oxidation zone. This region was noted for its incredible wealth of very rare elements and minerals containing germanium, among others. From the well-known collection of Belgian teacher and Tsumeb collecting specialist, Willy Israel. Mineral

Germanite

germanite

Formula
Cu13Fe2Ge2S16
Mohs
3
Mineral

Germanocolusite

germanocolusite

Formula
Cu13VGe3S16
Gersdorffite (from Grand-Praz Mine, Ayer) in Valais Nature Museum in Sion. Mineral

Gersdorffite

gersdorffite

Formula
NiAsS
Mohs
5.5
Gerstleyite Locality: Baker mine, U.S. Borax Mine (Pacific West Coast Borax; Pacific Coast Borax County; Boron Mine; U.S. Borax and Chemical Corp.; Kramer Mine; Baker Mine), Kramer Borate deposit, Boron, Kramer District, Kern County, California, USA (Locality at mindat.org) Size: miniature, 4 x 3 x 2 cm Gerstleyite Gerstleyite is an extremely rare sulfosalt , in fact I'd warrant so rare on the market that most people, even diehard sulfide lovers, have never seen one. This was the first known sodium sulfosalt according to MinDat. This specimen is from the original find and the original collector as reported to me on the label from the previous owner (see below - I trust his sourcing on that information). It is a textbook nodule of crystallized gerstleyite in matrix from this boron open pit mine, collected by a man named Vincent Morgan in 1954. From him, it was sold to a friend who is a very well known collector of rare sulfides and sulfosalts, now a professor of minalogy himself, Frank Keutsch. He told me this is one of a few he obtained long ago. Certainly, this is a good one, and is the best I know of around the market - well, its the ONLY one I know of on the market since I first heard of it a decade ago, put it that way. Mineral

Gerstleyite

gerstleyite

Formula
Na2(Sb,As)8S13·2H2O
White single crystal of the extremely rare Mn-Mg-Zn mineral gerstmannite from the type and only known locality worldwide in Sterling Hill mine, Ogdensburg, New Jersey. The sample is from the original find of the mineral at Sterling Hill in 1970 when the only two known specimens were found. This is a fragment of one of these two larger specimens, so it is a cotype specimen Ex Vandenbroucke Museum collection specimen, from Waregem, Belgium. Mineral

Gerstmannite

gerstmannite

Formula
MnMgZn(SiO4)(OH)2
Mineral

Geschieberite

geschieberite

Formula
K2(UO2)(SO4)2·2H2O
Getchellite from Khaidarkan, Fergana Valley, Osh Oblast, Kyrgyzstan. Specimen size is 3.6 cm, with a 2.4 cm patch of getchellite on a grey matrix. Mineral

Getchellite

getchellite

Formula
AsSbS3
Mineral

Geuerite

geuerite

Formula
Ag2Tl4Pb4As22S40
Mineral

Geversite

geversite

Formula
PtSb2
Colour
grey
Mineral

Ghiaraite

ghiaraite

Formula
CaCl2·4H2O
Dark orange crystals of the new and extremely rare mineral giacovazzoite mineral. According to one of the authours, the find was strictly limited to a very small area of about 0,5 m long inside the Arsiccio mine (Monte Arsiccio Mine, Apuan Alps, Tuscany, Italy). Mineral

Giacovazzoite

giacovazzoite
Brown sharp crystals of the extremely rare mercury mineral gianellaite from the type locality: Mariposa Mine, Terlingua District, Brewster County, Texas, United States of America. Gianellaite in crystals is very very rare. The species has only been found in two localities worldwide. Analyzed specimen. Mineral

Gianellaite

gianellaite

Formula
[(NHg2)2](SO4)(H2O)x
Gibbsite Locality: Xianghualing Mine (Hsianghualing Mine), Xianghualing Sn-polymetallic ore field, Linwu County, Chenzhou Prefecture, Hunan Province, China (Locality at mindat.org) Size: miniature, 5.1 x 4.4 x 1.6 cm Gibbsite Emplaced on a 3-dimensional crust are botryoidal aggregates of greenish-gray gibbsite, to .3 cm across. Mineral

Gibbsite

gibbsite

Formula
Al(OH)3
Outstanding metallic acicular crystals of the very rare sulphosalt mineral giessenite from Japan (Otome Mine, Kimpuzan District, Honshu Island). Giesenite has its type locality in Giessen, mineral locality very close to the famous Lengenbach deposit. Ex.Dr.Hartel specimen. Mineral

Giessenite

giessenite

Formula
(Cu,Fe)2Pb26.4(Bi,Sb)19.6S57
Mohs
2.5