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Mineralati

Minerals

6323 results

Mineral

Maruyamaite

maruyamaite

Formula
K(MgAl2)(Al5Mg)(BO3)3(Si6O18)(OH)3O
Mohs
7
Mineral

Marécottite

marécottite
Mineral

Masaitisite

masaitisite

Formula
KCu5O2(SeO3)2Cl3
Mascagnite Locality: former Ravat Village, Yagnob River, joint of Zeravshan and Gissar Range, Viloyati Sogd (Viloyati Sughd), Tajikistan (Locality at mindat.org) Acicular xls and flakes of Mascagnite. Field of view 6 mm. Specimen and photo Leon Hupperichs. Mineral

Mascagnite

mascagnite

Formula
(NH4)2SO4
Metallic inclusions of the very rare Pt-Bi telluride mineral maslovite in a specimen that was probably analyzed by the former owner of the specimen. From: Rustenburg, Bojanala District, North West Province, South Africa. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Maslovite

maslovite

Formula
PtBiTe
Massicot Locality: Monte Cristo mine, Goodsprings District, Clark County, Nevada, USA (Locality at mindat.org) Size: 5.0 x 4.0 x 4.0 cm. This showy specular galena matrix specimen is VERY RICHLY covered with a mustard-yellow crust of massicot and is from the well-known Goodsprings District of Nevada. Ex. John Ydren Collection. Mineral

Massicot

massicot

Formula
PbO
Big and outstanding transparent very pale brown crystal group of the very rare rubidium mineral masutomilite from one of the few known localities worldwide: Hirukawa, Nakatsugawa City, Honshu Island, Japan. Masutomilite is a Rubidium (Rb) mineral. Rb are extremely rare chemical elements in minerals. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Masutomilite

masutomilite

Formula
(K,Rb)(Li,Mn³⁺,Al)3(AlSi3O10)(F,OH)2
Single crystal of masuyite with red needles of curite from Shinkolobwe, DRC. Mineral

Masuyite

masuyite

Formula
Pb(UO2)3O3(OH)2 * 3H2O
Yellow microcrystals of the extremely rare uranium mineral mathesiusite (IMA 2013-046) from one of the only two known localities worldwide: North Mesa Mine group, Temple Mountain, Emery County, Utah, United States of America. Analyzed by SEM/EDS. Mineral

Mathesiusite

mathesiusite

Formula
K5(UO2)4(SO4)4(VO5)(H2O)4
Mohs
2
Mineral

Mathewrogersite

mathewrogersite

Formula
Pb7FeAl3GeSi12O36(OH,H2O)6
Mohs
2
Black metallic platy intergrown crystal of mathiasite and lindsleyite, two very rare minerals from the TL in Bultfontein, South Africa (Bultfontein Mine, Kimberley, Baard District, Northern Cape Province, South Africa). Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Mathiasite

mathiasite

Formula
(K, Ba, Sr)(Zr, Fe)(Mg,Fe)2 (Ti,Cr,Fe)18O38
Outstanding sharp bronze crystals of the rare sulphide mineral matildite from the famous Clara mine (Wolfach, Black Forest, Baden-Württemberg, Germany). Mineral

Matildite

matildite

Formula
AgBiS2
Mohs
2.5
Matioliite Locality: Gentil claim, Mendes Pimentel, Doce valley, Minas Gerais, Southeast Region, Brazil Pale blue Matioliite. Field of view 3 mm. Specimen and photo Leon Hupperichs. Mineral

Matioliite

matioliite

Formula
NaMgAl5(PO4)4(OH)6·2H2O
Matlockite - Locality: Cromford, Derbyshire, England - Displayed in the Mineralogical Museum, Bonn, Germany Mineral

Matlockite

matlockite

Formula
PbClF
Mineral

Matsubaraite

matsubaraite

Formula
Sr4Ti5(Si2O7)2O8
Mineral

Mattagamite

mattagamite

Formula
CoTe2
White crystal aggregates of the extremely rare mineral matteuccite from the type locality in Italy (Monte Somma, Vesuvius, Campania, Italy) and only one of the two known localities worldwide. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Matteuccite

matteuccite

Formula
NaHSO4 * H2O
White acicular crystals of the very rare mineral mattheddleite from the most famous locality for the mineral, Caldbeck Fells (Caldbeck Fells, Cumbria, United Kingdom) where it is first identified. See Min Record. 22:105-121 for a review on the discovery. Ex-Renato Pagano collection. Mineral

Mattheddleite

mattheddleite

Formula
Pb5(SiO4)1.5(SO4)1.5(Cl,OH)
Mineral

Matthiasweilite

matthiasweilite

Formula
PbTe⁴⁺O3
Matulaite Locality: Bachman Mine, Hellertown, Lower Saucon Township, Northampton County, Pennsylvania, USA (Locality at mindat.org) Size: 4.3 x 1.7 x 1.6 cm. Matulaite is a rare phosphate that is only found in a handful of worldwide localities. Pieces from the type locality at the Bachman mine are U.S. classics. This specimen features a covering of white Matulaite on one side of Limonite matrix. This particular specimen came directly from Marge and Vincent Matula (the species was named after Marge) and was a gift from Will Shulman to Pat Gross in April 1984. Rich Kosnar acquired the Pat Gross collection in the early 1990s, as she was a dear friend to Rich during his youth and early years of mineral dealing. Mineral

Matulaite

matulaite

Formula
(Fe³⁺,Al)Al7(PO4)4(PO3OH)2(OH)8(H2O)8 * 8H2O
Mineral

Matyhite

matyhite

Formula
Ca18(Ca,☐)2Fe²⁺2(PO4)14
tabular crystals of Maucherite (Picture width: 2.2 mm) Locality: Eisleben, Saxony-Anhalt, Germany Mineral

Maucherite

maucherite

Formula
Ni11As8
Mohs
5
Mineral

Mauriziodiniite

mauriziodiniite

Formula
(NH4)(As2O3)2I
Mohs
1
Colour
colorlessness
Back-scattered electron images of zoned grains in the alloy core of sample M11843. Ti – native Ti; Mmi – maurogemmiite; and Prbs – paulrobinsonite. The vermicular symplectite is composed of wangxibinite (TiFe) and ‘osbornite’ (TiN) in roughly equal proportions. (a) This image was taken near where foils for transmission electron microscopic study were extracted (Fig. 1). (b) Modified from Fang et al., Reference Fang, Bai, Yang, Rong, Shi, Li, Xiong and Ma2013, figure 4) where numbered points refer to electron microprobe analyses of α-titanium and of ‘Ti-Fe-Si-Ni alloy’ (paulrobinsonite) reported by Fang et al., Reference Fang, Bai, Yang, Rong, Shi, Li, Xiong and Ma2013, table 3). Mineral

Maurogemmiite

maurogemmiite

Formula
Ti10Fe3O3