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Minerals

6323 results

Mineral

Morrisonite

morrisonite

Formula
Ca11(H2O)78(As³⁺V⁴⁺2V⁵⁺10As⁵⁺6O51)2
Light brown mosandrites to 15 mm in length in matrix. From: "The Pit", Norra Kärr, Gränna, Jönköping, Jönköping County, Sweden. Mineral

Mosandrite-(Ce)

mosandrite-(Ce)

Formula
(Ca3REE)[(H2O)2Ca0.5☐0.5]Ti(Si2O7)2(OH)2(H2O)2
Moschelite, cinnabarite, mercury Locality: Open pit of Backofen Mine, Moschellandsberg, Obermoschel, Rhineland-Palatine, Germany Mineral

Moschelite

moschelite

Formula
HgI
Moschellandsbergite Locality: Carolina Mine, Landsberg Mt. (Moschellandsberg Mt.), Obermoschel, Rhineland-Palatinate, Germany (Locality at mindat.org) From the John Saul collection, a superb floater crystal of exceptional quality of Moschellandsbergite , small but perfect and complete all around. Comes with xerox of the above label which was with the two specimens together. 0.4 x 0.4 x 0.4 cm Mineral

Moschellandsbergite

moschellandsbergite

Formula
Ag2Hg3
Mineral

Mosesite

mosesite

Formula
(Hg2N)Cl
Mineral

Moskvinite-(Y)

moskvinite-(Y)

Formula
Na2KYSi6O15
Perfectly developed tabular pale brown mottanaite-(Ce) crystals, a very rare mineral known worldwide only from two close localities in Latium, Italy (Tre Croci, Vetralla, Vico Lake, Viterbo Province). Ex.Bernabe collection. Mineral

Mottanaite-(Ce)

mottanaite-(Ce)

Formula
Ca4(Ce,REE)∑2Al(Be1.5☐0.5)∑2[B4Si4O22]O2
Mottramite. Locality: Olifantsfontain, Southwest Africa. Exposed in the Mineralogical Museum, Bonn, Germany Mineral

Mottramite

mottramite

Formula
PbCuVO4(OH)
Motukoreaite, Phillipsite Locality: Stradner Kogel Mt., Wilhelmsdorf, Bad Gleichenberg, Styria, Austria Yellowish-white balls of Motukoreaite together with Phillipsite. Field of view 6 mm. Depth of field is achieved with CombineZM. Specimen and photo Leon Hupperichs. Mineral

Motukoreaite

motukoreaite

Formula
Mg6Al3(OH)18[Na(H2O)6][SO4]2·6H2O
Francevillite, Mounanaite, Curienite Locality: Mounana Mine (Mouana Mine), Franceville, Haut-Ogooué Province, Gabon (Locality at mindat.org) A rich CABINET-sized specimen that is incredible for both its aesthetic and scientific qualities. This piece features INDIVIDUAL and ISOLATED , RELATIVELY LARGE crystals of Francevillite to several mm in size, on an attractive matrix plate! Tiny yellow-gemmy crystals of mounanaite are so abundant and rich on this specimen that they are easily eye-visible against the larger francevillites, as shown in my pics. Characteristically powdery microcrystals of orangey-yellow curienite are in association , as well, in scattered crystals and as a thick matte on the rightmost edge of the specimen. This mine closed in 1999 after 40 years of production, and this is, for quality if not size, pretty much as good as the mineral gets. Note that this its the type locality of ALL THREE species! 12.5 x 7 x 2.25 cm Mineral

Mounanaite

mounanaite

Formula
PbFe³⁺2(VO4)2(OH,F)2
Mohs
4.5
Pinkish white acicular crystals of mountainite associated to brown manganneptunite. From: Yubileinaya Pegmatite, Lovozero Massif, Kola, Russian Federation. Mineral

Mountainite

mountainite

Formula
KNa2Ca2[Si8O19(OH)]·6H2O
Purple crystal aggregates of the rare mineral mountkeithite from the TL in Mount Keith (Mount Keith, Wiluna Shire, Western Australia, Australia). Only few localities known worldwide. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Mountkeithite

mountkeithite

Formula
[(Mg1-xFe³⁺x)(OH)2][SO4]x/2 * nH2O
Mineral

Mourite

mourite

Formula
UMo5O12(OH)10
Mineral

Moxuanxueite

moxuanxueite
Outstanding yellow vitreous crystals of the extremely rare REE mineral moydite-(Y) from the type and only known locality worldwide in Canada; Evans-Lou Mine, Lac Saint-Pierre, Val-des-Monts, Outaouais, Québec, Canada. Ex Vandenbroucke Museum collection from Waregem, Belgium. Mineral

Moydite-(Y)

moydite-(Y)

Formula
Y[B(OH)4](CO3)
Mozartite Locality: Cerchiara Mine, Borghetto Vara, Vara Valley, La Spezia Province, Liguria, Italy Dark red sprays of Mozartite together with red Namansilite in matrix. Field of view 4 mm. Specimen and photo Leon Hupperichs. Mineral

Mozartite

mozartite

Formula
CaMn³⁺(SiO4)(OH)
Mineral

Mozgovaite

mozgovaite

Formula
PbBi4S7
Mineral

Moëloite

moëloite
Mineral

Mpororoite

mpororoite

Formula
WAlO3(OH)3 * 2(H2O)
Mineral

Mroseite

mroseite

Formula
CaTe4+(CO3)O2
Mrázekite (Size 2 cm x 1.4 cm x 1.1 cm) Locality: Podlipa deposit, Ľubietová, Banská Bystrica Co., Banská Bystrica Region, Slovakia Mrazekite is a very rare hydrated bismuth, copper, hydroxyl-phosphate species that is only found at less than 10 worldwide localities. The stunning cerulean blue color is very eye-catching, despite the smaller size of the crystals. The species is named after a Czech mineralogist named Zdenek Mrázek who first collected it. This piece is from the type locality for the material in Slovakia, and was collected within the last 10 years (since 2000). Mineral

Mrázekite

mrázekite

Formula
Bi2Cu3(PO4)2O2(OH)2·2H2O
Mineral

Muirite

muirite

Formula
Ba10Ca2Mn²⁺Ti[HSi2O7]5(OH,Cl,F)5
Mineral

Mukhinite

mukhinite

Formula
{Ca2}{Al2V³⁺}(Si2O7)(SiO4)O(OH)
Mullite Field of view: 5 mm Locality: Hendersons Quarry, Mount Ngongotaha, Rotorua District, Bay of Plenty Region (Te Moana-a-Toi), North Island, New Zealand Original description: Fibrous radiating mullite spray, with yellow ? Mineral

Mullite

mullite

Formula
3Al2O3·2SiO2