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6323 results

Haiweeite, Gypsum (Var.: Gypsum) Locality: Perus, São Paulo, São Paulo, Southeast Region, Brazil (Locality at mindat.org) Size: 6.5 x 5.6 x 1.9 cm. Haiweeite is one of the more attractive of the non-African suite of radioactives containing uranium, and remains a rarity known in good crystals from but a few locales. This is a very rare, hydrated, calcium, uranium, silicate. Extremely colorful and rarely ever seen in dealers stocks. This is a large and rich specimen of the material. It came out about 6 years ago. Tim Blackwood Collection. Mineral

Haiweeite

haiweeite

Formula
Ca(UO2)2Si5O12(OH)2·3H2O
Mohs
3.5
Figure 1. Reflected light image of the studied sample of hakite-(Cd) Mineral

Hakite-(Cd)

hakite-(Cd)

Formula
Cu6(Cu4Cd2)Sb4Se13
Figure 1. Reflected light image of the studied sample of hakite-(Fe). Mineral

Hakite-(Fe)

hakite-(Fe)

Formula
Cu6(Cu4Fe2)Sb4Se13
Back-scattered electron (BSE) image of the sample studied containing arsenoústalečite (red circles), stibioústalečite (blue circles), hakite-(Hg) (green circles), berzelianite (dark grey in BSE) and uraninite (white in BSE). The grains used for single-crystal X-ray diffraction study were extracted from the red (arsenoústalečite) and blue (stibioústalečite) boxes. Holotype sample. Mineral

Hakite-(Hg)

hakite-(Hg)

Formula
Cu6(Cu4Hg2)Sb4Se13
Figure 1. Reflected light image of the studied sample of hakite-(Zn). Mineral

Hakite-(Zn)

hakite-(Zn)

Formula
Cu6(Cu4Zn2)Sb4Se13
Mineral

Halamishite

halamishite

Formula
Ni5P4
Yellow spherules of halilsarpite on orange-brown smolyaninovite from the Oumlil mine, Morocco. FOV 3.15 mm. Photo by Ole-Thorsein Ljøstad. Mineral

Halilsarpite

halilsarpite
Minerals in Royal Belgian Institute of Natural Sciences, in Brussels (Belgium). Mineral

Halite

Formula
NaCl
Mohs
2.5
Colour
Colourless to white
Mineral

Hallimondite

hallimondite

Formula
Pb2(UO2)(AsO4)2 * nH2O
Mineraly.sk - halloyzit Mineral

Halloysite

halloysite

Formula
Al2Si2O5(OH)4
Halotrichite Locality: Golden Queen Mine, Soledad Mt., Golden Queen District, Kern County, California, USA (Locality at mindat.org) Size: 5.2 x 4.2 x 3.3 cm. Most likely collected in the late 1960s or early 70s, this is a gorgeous specimen of acicular (hair-like) crystals of halotrichite - here represented in a tuft perfectly set atop matrix! Halotrichite (a hydrated iron aluminum sulfate, usually a product of pyrite oxidation). Mineral

Halotrichite

halotrichite

Formula
Fe²⁺Al2(SO4)4·22H2O
Mohs
1.5
White globular aggregate of the very rare Mg borate halurgite from the type and only known locality worldwide: Chelkar Salt Dome, Aksai Valley, Shalkar, Aktobe Province, Kazakhstan. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Halurgite

halurgite

Formula
Mg4[B8O13(OH)2]2·7H2O
Hambergite - Locality: Madagaskar - Exposed in the Mineralogical Museum, Bonn, Germany Mineral

Hambergite

hambergite

Formula
Be2BO3(OH)
Mohs
7.5
Grey black metallic crystal aggregtaes of the rare sulphide mineral hammarite from New Mexico (Victorio District, Luna County, New Mexico, United States of America). Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Hammarite

hammarite

Formula
Cu2Pb2Bi4S9
Mineral

Hanahanite

hanahanite
Yellow prismatic crystals of hanauerite on goethite and aggregates of greenish-yellow rhombohedral plumbogummite crystals. Schöne Aussicht Mine. FOV width: (a)—1.2 mm, (b)—0.35 mm. The image is published in an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Mineral

Hanauerite

hanauerite

Formula
AgHgSI
Mineral

Hanawaltite

hanawaltite

Formula
Hg⁺6Hg²⁺O3Cl2
Axinite-(Mn), Epidote-(Pb) Locality: Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA The group in the foreground at bottom spans ~ 1⅔ x 1¼ mm. Jan 2011: Another attempt to show a (relatively) isolated and gemmy example of these xls. They are not uncommon and can be much bigger. But finding one that is not obscured, coated, cloudy, etched, etc. is a challenge. These xls are not as isolated as in the old parent photo but thery came out better. As a bonus, there are some tiny (brick red) hancockite xls deep in the recess. Mineral

Hancockite

hancockite

Formula
CaPb(Al2Fe³⁺)[Si2O7][SiO4]O(OH)
Mineral

Hanjiangite

hanjiangite

Formula
Ba2Ca(V³⁺Al)(AlSi3O10)(OH)2F(CO3)2
Hanksite crystal from Searles Lake, California. Pen in background for scale. Mineral

Hanksite

hanksite

Formula
KNa22(SO4)9(CO3)2Cl
Two small single crystals of the extremely rare ammonium phosphate mineral hannayite from the type locality: Skipton Caves, Mount Widderin, Victoria, Australia. Mineral

Hannayite

hannayite

Formula
(NH4)2Mg3(PO3OH)4·8H2O
Hannebachite Locality: Hannebacher Ley (Hannebacher Lay), Hannebach, Niederzissen, Eifel Mts, Rhineland-Palatinate, Germany Original description: tabular colorless crystals of hannebachite up to 2.06 mm Mineral

Hannebachite

hannebachite

Formula
CaSO3·0.5H2O
Mohs
3.5
Mineral

Hansblockite

hansblockite

Formula
(Cu,Hg)(Bi,Pb)Se2
Mineral

Hansesmarkite

hansesmarkite

Formula
Ca2Mn2Nb6O19·20H2O