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Minerals

6323 results

Mineral

Hingganite-(Yb)

hingganite-(Yb)

Formula
BeYbSiO4(OH)
Mineral

Hinokageite

hinokageite

Formula
MnMg(SiO4)
Hinsdalite on pyromorphite Field of view: 5 mm Locality: South Mine, Kintore opencut, Broken Hill, New South Wales, Australia Mineral

Hinsdalite

hinsdalite

Formula
PbAl3(SO4)(PO4)(OH)6
This sample contains mostly quartz (white) and biotite (black). What makes it special is the presence of light brown hiortdahlite. Hiortdahlite has composition (Ca,Na)3(Zr,Ti,Y)Si2O7(O,OH,F)2. This specimen is from Langesundfjord, Norway, and is about 7 cm across. Mineral

Hiortdahlite

hiortdahlite

Formula
(Na,Ca)2Ca4Zr(Mn,Ti,Fe)(Si2O7)2(F,O)4
Mineral

Hiroseite

hiroseite
Hisingerite Locality: Långban, Filipstad, Värmland, Sweden (Locality at mindat.org) Size: 7.3 x 5.2 x 2.4 cm. Hisingerite is an uncommon secondary, hydrated, iron silicate. Very rare, crystallized plates of reddish-brown, silver metallic-lustre hisingerite crystals are festooned on the sculptural matrix of this very rich specimen from the famous Langban deposit of Sweden. Hisingerite specimens are very rare from Langban and this choice piece is from the collection of Dr. Mark Feinglos, a noted rarities collector. Mineral

Hisingerite

hisingerite

Formula
Fe2Si2O5(OH)4·2H2O
Mohs
3
Mineral

Hitachiite

hitachiite

Formula
Pb5Bi2Te2S6
Mineral

Hizenite-(Y)

hizenite-(Y)

Formula
Ca2Y6(CO3)11·14H2O
Microphotograph in polarised light of a thin section with poikiloblastic hiärneite (orange) and magnetoplumbite/jacobsite (opaque) in a fine-grained phlogopite matrix. Field of view = 1 mm width. Specimen GEO-NRM #19920776. Mineral

Hiärneite

hiärneite

Formula
Ca2Zr4Mn³⁺SbTiO16
Mineral

Hjalmarite

hjalmarite

Formula
{Na}{NaMn}{Mg5}Si8O22(OH)2
Mineral

Hloušekite

hloušekite

Formula
(Ni,Co)Cu4(AsO4)2(AsO3OH)2·9H2O
Mineral

Hocartite

hocartite

Formula
Ag2FeSnS4
Mohs
4
Mineral

Hochelagaite

hochelagaite

Formula
CaNb4O11·8H2O
Transparent crystals of hochleitnerite associated with colourless microcrystalline fluorapatite and black crystals of rockbridgeite. Field of view: 0.84 mm. Photo by Anthony Kampf. Mineral

Hochleitnerite

hochleitnerite

Formula
[(H2O)K]Mn2(Ti2Fe³⁺)(PO4)4O2(H2O)10·4H2O
Mineral

Hodgesmithite

hodgesmithite

Formula
(Cu,Zn)6Zn(SO4)2(OH)10*3H2O
Hodgkinsonite Locality: Franklin Mine, Franklin, Franklin Mining District, Sussex County, New Jersey, USA (Locality at mindat.org) Size: 4.9 x 4.4 x 3.2 cm. Hodgkinsonite is a very rare manganese, zinc silicate found only in the Franklin Mining District of New Jersey. The sculptural franklinite with a vein of willemite matrix hosts a vein and vugs filled with sharply crystallized, pink hodgkinsonite crystals. The translucent and lustrous crystals reach 8 mm and the main crystal here is doubly terminated. These are large crystals and this is a very rich example for the species and locality. Moreover, it is a good display specimen instead of the typical chunk of ugly rock. Rarely available, this is one from an old collection sold at the Rochester Sypmosium last year (2008). Ex. Ranstrom Collection. Mineral

Hodgkinsonite

hodgkinsonite

Formula
Mn²⁺Zn2(SiO4)(OH)2
Metallic crystals of the rare mineral hodrusite from the type locality: Rozália Mine, Hodruša-Hámre, Banska Bystrica, Slovakia (Slovak Republic). Mineral

Hodrušite

hodrušite

Formula
Cu4Bi6S11
Yellow acicular crystals of Hoelite (picture size: 10 mm) - Locality: Carolaschacht Mine, Freital near Dresden, Saxony, Germany Mineral

Hoelite

hoelite

Formula
C14H8O2
Hoganite specimens we have studied form tabular to equant pseudohexagonal crystals; some of them with something similar to rhombohedron faces. Transparent to translucent, with good brilliance and curved faces and edges. Determined by Raman spectroscopy and SEM-EDS. They are disposed on the copper and "limonite" matrix and accompanied by light green globular aggregates of a unidentified copper chloride similar to atacamite. These chloride is partially covering hoganite crystals. The origin of these hoganite crystals is not completely known. "Natural" hoganite specimens are formed, as we said before, from decomposing vegetable matter, like leaves or mine wooden beams. But in this case, we propose that these crystals could be formed, in dry conditions, from acids (vinegar) and solutions, those miners are using to clean native copper specimens. But the presence of the copper chloride covering hoganite is a point to investigate. Locality: Oumjrane Mines, Alnif, Meknès-Tafilalet Region, Morocco Size: 3.7 × 3.2 × 2.5 cm Mineral

Hoganite

hoganite

Formula
Cu(CH3COO)2·H2O
Mohs
1.5
Mineral

Hogarthite

hogarthite

Formula
(Na,K)2CaTi2Si10O26·8H2O
Hohmannit, Fundort: Alcaparossa, Argentinien. Mineralogisches Museum Bonn Mineral

Hohmannite

hohmannite

Formula
Fe³⁺2(SO4)2O * 8H2O
Mohs
3
This is a new mineral "hokkaidoite" exhibited in Tochigi Prefectural Museum. It is exhibited in photo-allowed area. Mineral

Hokkaidoite

hokkaidoite

Formula
C22H12
Outstanding brown crystals of the extrememely rare Mn mineral holdawayite from the type locality in Kombat mine, Namibia. Originally, holdawayite is light to bright pink but it gradually changes to a brown color on exposure and in some cases has developed a thin black sooty coating that masks the true color. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Holdawayite

holdawayite

Formula
Mn6(CO3)2(OH)7(Cl,OH)
Pink holdenite and orange kolicite crystals from the type locality for both species in Sterling Hill. Specimen found in 1979. Mineral

Holdenite

holdenite

Formula
(Mn²⁺,Mg)6Zn3(AsO4)2(SiO4)(OH)8