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Mineralati

Minerals

6323 results

Mineral

Medenbachite

medenbachite

Formula
Bi2Fe³⁺Cu²⁺(AsO4)2O(OH)3
Mineral

Medvedevite

medvedevite
Mineral

Meerschautite

meerschautite

Formula
(Ag,Cu)6Pb43-2ₓSb44+2ₓS112Oₓ (x~0.5)
Mineral

Megacyclite

megacyclite

Formula
Na8KSi9O18(OH)9 * 19H2O
Mineral

Megakalsilite

megakalsilite

Formula
KAlSiO4
Mineral

Megawite

megawite

Formula
CaSnO3
3.1 x 1.3 x 0.9 cm. A beautiful small miniature specimen featuring rich blue crystalline grains of the new rare species meieranite in a matrix of greenish sugilite (?). This new mineral is named in honor of Dr. Eugene Meieran. The specimen is from the type locality. Reference: Yang, H., Gu, X., Downs, R.T., Evans, S.H., van Nieuwenhuizen, J.J., Lavinsky, R.M. and Xie, X. (2015) Meieranite, IMA 2015- 009. CNMNC Newsletter No. 25, June 2015, page 533; Mineralogical Magazine, 79, 529-535. From: Wessels Mine, Hotazel, Kalahari manganese field, Northern Cape, South Africa. Mineral

Meieranite

meieranite

Formula
Na2Sr3MgSi6O17
Mineral

Meierite

meierite

Formula
Ba44Si66Al30O192Cl25(OH)33
Mineral

Meifuite

meifuite
Meionite, Calcite Dimensions: 115 mm × 60 mm × 45 mm Locality: Skräbböle Quarry, Pargas limestone mine, Pargas, Southwest Finland, Finland Description: Rounded meionite crystals in calcite. These have etched grayish green surface and yellowish green interior. Size 115 x 60 x 45 mm. Collected on Lakeuden kivikerho -club quarry collecting trip 2012. Mineral

Meionite

meionite

Formula
(Ca,Na)4(Si,Al)12O24(CO3,SO4,Cl)
Mineral

Meisserite

meisserite

Formula
Na5(UO2)(SO4)3(SO3OH)(H2O)
Mineral

Meitnerite

meitnerite

Formula
(NH4)(UO2)(SO4)(OH)*2H2O
Outstanding yellow prismatic crystals of the extremely rare mineral meixnerite from the type locality in Austria (In der Gleisen Quarry, Sankt Oswald, Melk District, Lower Austria, Austria), associated to colorless arrowed aragonite crystals. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Meixnerite

meixnerite

Formula
Mg6Al2(OH)16(OH)2 * 4H2O
Mineral

Meizhouite

meizhouite

Formula
Fe²⁺V³⁺2(PO4)2(OH)2
Mejillonesite Locality: Cerro Mejillones, Mejillones peninsula, Mejillones, Antofagasta Province, Antofagasta Region, Chile Original description: splendid group of colourless crystals of Mejillonesite. Dimension area 1,9 x 1,9 mm photo Germano Fretti, collection Luigi Chiappino Mineral

Mejillonesite

mejillonesite

Formula
HNaMg2(HPO4)(PO4)(OH)·2H2O
Mohs
4
Mineral

Melanarsite

melanarsite

Formula
K3Cu7Fe³⁺O4(AsO4)4
Brown crystal aggregates of caryocerite (a variety of melanocerite-(Ce)) from the type locality for the mineral in Norway: Melanocerite type locality, Vestfold og Telemark, Norway. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Melanocerite-(Ce)

melanocerite-(Ce)

Formula
Ce5(SiO4,BO4)3(OH,O)
Melanophlogite Locality : Fortullino, Rosignano Marittimo, Livorno Province, Tuscany, Italy Size : Sphere 3mm Mineral

Melanophlogite

melanophlogite

Formula
46SiO2 * 6(N2,CO2) * 2(CH4,N2)
Silvery platy crystals of extremely rare Mn-Sb mineral melanostibite with perfect cleavages in matrix from the type and only one of very few known localities for the species (Sjögruvan, Grythyttan, Hällefors, Örebro County, Sweden). Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Melanostibite

melanostibite

Formula
Mn²⁺(Sb⁵⁺,Fe³⁺)O3
Alamosite, Melanotekite Locality: Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia (Locality at mindat.org) Size: thumbnail, 1.9 x 1.9 x 1.5 cm Alamosite with Melanotekite Superb, translucent, lathelike crystals of alamosite make the bulk of this specimen, which is a major thumbnail example of the species and, aside from a few freak specimens, is of a pretty good quality as well. The black specks are melanotekite, though there may also be other minerals in association here which I am not identifying. Alamosite in good crystals is one of the more uncommon of Tsumeb rarities, and seldom seen for sale (at any price, but usually very high, when priced). From an old German collection, such pieces are rarely seen on the market today. Mineral

Melanotekite

melanotekite

Formula
Pb2Fe³⁺2(Si2O7)O2
Green chlorothionite associated to melanothallite from the Vesuvius volcano in Italy. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Melanothallite

melanothallite

Formula
Cu2OCl2
Several black crystal aggregates of the rare vanadium mineral melanovanadite from Ragra mine, Peru. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Melanovanadite

melanovanadite

Formula
Ca(V⁵⁺,V⁴⁺)4O10·5H2O
Mohs
2.5
Mineral

Melansonite

melansonite
Melanterite, Gypsum Locality: Buena Vista Mine (Goodview Mine), Providencia Canyon, Patagonia District, Patagonia Mts, Santa Cruz County, Arizona, USA Size: 6.7cm x 5.3cm x 3.2cm An interesting and attractive combination specimen from Arizona. The majority of the specimen is composed of microcrystalline melanterite (cuprian), turquoise blue in color. Melanterite is a hydrated iron sulphate, formed after the decomposition of pyrite or other iron minerals due to the action of surface waters. It is often found in mines as a post-mining formation on mine walls. On the melanterite is a forest of dozens upon dozens 3-4 mm white curvaceous gypsum (var. selenite) fishtail twins. Ex. Hoppel Collection. Mineral

Melanterite

melanterite

Formula
Fe²⁺SO4·7H2O
Mohs
2