's Image Gallery

Magniotriplite: (Mg,Fe++,Mn)2(PO4)F

Comments: Red-brown crystalline magniotriplite masses in pegmatite.
Location: Kyrk-Bulak pegmatite, Turkestanskij Range, Os, Kyrgyzstan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Magnussonite: Mn++5As+++3O9(OH,Cl)

Comments: Bright green crystalline magnussonite grains with willemite.
Location: Sterling Mine, Ogdensburg, Sussex County, New Jersey, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Mahnertite: (Na,Ca)Cu++3(AsO4)2Cl·5(H2O)

Comments: Blue mahnertite in quartz.
Location: Cap Garonne Mine, Pradet, Var, Provence-Alpes-Côte d'Azur, France. Scale: Picture size 1.5 mm.
© Thomas Witzke / Abraxas-Verlag

Majorite: Mg3(Fe,Al,Si)2(SiO4)3  
Lingunite: (Na,Ca)AlSi3O8  
Ringwoodite: Mg2SiO4

Comments: BSE image showing chondritic xenoliths and impact melt veins of lingunite (Lgt). Olivine (Olv), pyroxene (Pyx), maskelynite (Ms glass), ringwoodite (Rgt), and majorite (Mjt). Meteoritics & Planetary Science 43, No 5, 823-828 (2008).
Location: Polished thin section of the Sixiangkou meteorite. Scale: See Image.
© Meteoritics & Planetary Science

Makarochkinite: Ca2Fe++4Fe+++TiSi4BeAlO20

Comments: Black grain of makarochkinite on matrix.
Location: Pit No. 400, Lake Ishkul', Ilmen Mts, Chelyabinsk Oblast', Urals Region, Russia. Scale: Specimen Size 0.5 cm x 0.5 cm.
© Carlo Guidarin

Makatite: Na2Si4O8(OH)2·4(H2O)

Comments: Thin white bladed crystals of makatite.
Location: Aris Phonolite, S. of Windhoek, Namibia. Scale: 5.5 x 3 cm.
© John Veevaert

Makatite: Na2Si4O8(OH)2·4(H2O)

Comments: White acicular sprays of makatite crystals in a vug with pink villiaumite.
Location: Aris Phonolite, Namibia. Scale: Picture size 2 cm.
© Sandro Maggia/Minernet.it

Makovickyite: Ag1.5Bi5.5S9  
Cupromakovickyite: Cu4AgPb2Bi9S18

Comments: SEM polished section detail of a grain of cupromakovickyite (dark gray) with locally exsolved lamellae (bright gray) of makovickyite. (CanMin, 46:503).
Location: Baita Bihor, Romania.. Scale: See Image.
© Canadian Mineralogist

Malachite: Cu2(CO3)(OH)2  
Azurite: Cu3(CO3)2(OH)2

Comments: Dark blue stubby pyramidal azurite crystals and green botryoidal-shaped radial aggregates of malachite.
Location: Nevada Lode Mine, San Juan Co., Utah, USA. Scale: 4 cm.
© Dave Barthelmy

Malachite: Cu2(CO3)(OH)2  
Demesmaekerite: Pb2Cu5(UO2)2(SeO3)6(OH)6·2(H2O)

Comments: Pale green crystals of demesmaekerite on dark green malachite.
Location: Musonoi Mine, Katanga, Democratic Republic of the Congo. Scale: Crystal Size 3mm.
© John Veevaert

Malachite: Cu2(CO3)(OH)2  
Devilline: CaCu4(SO4)2(OH)6·3(H2O)

Comments: Blue crystals of devilline on green, botryoidal malachite.
Location: Spania Dolina (Herrengrund), Slovakia. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Malachite: Cu2(CO3)(OH)2

Comments: Botryoidal malachite.
Location: Mindigi, Shaba, Congo. Scale: 7.5 x 5.5 cm.
© Fabre Minerals

Malanite: Cu(Pt,Ir)2S4

Comments: Epoxy grain mount of silver gray metallic polished fragment of malanite.
Location: Placer concentrate from Philipp Massif, Kamchatka, Russia. Scale: See Image.
© Rruff Database

Malayaite: CaSnSiO5 = CaSnOSiO4

Comments: Pale bluish colored malayaite under visible and SWUV light.
Location: Red-a-Ven Mine, Meldon, Okehampton, Devon, Great Britain. Scale: 3.7 x 2 cm.
© John Veevaert

Maldonite: Au2Bi

Comments: PPL polished section showing maldonite grain associated with native bismuth (Bi) and exsolved bismuth-gold areas..
Location: Escanaba Trough at the southern end of the Gorda Ridge. (Geology, v36:815). Scale: See Image.
© Geology

Maleevite: BaB2Si2O8

Comments: Backscatter elecron images of (a) an intergrowth of maleevite (Mal) and quartz (Qtz) and unknown Y-silicate (Y-Si); (b) maleevite (Mal) in arfvedsonite and astrophyllite (Astr) (CanMin, v 42, p 109).
Location: Moraine of the Dara-i-Pioz glacier, Alai range, Tien Shan, northern Tajikistan. Scale: See Image.
© Canadian Mineralogist

Malhmoodite: FeZr(PO4)2·4(H2O)

Comments: Small white aggregate of malhmoodite on matrix.
Location: Union Carbide Mine, Wilson Springs (Potash Sulfur Springs), Garland Co., Arkansas, USA. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Malinkoite: NaBSiO4

Comments: White to clear glassy mico crystals of malinkoite to less than 0.75mm deep in a vug.
Location: Mont St. Hilaire, Rouville Co., Quebec, Canada. Scale: 2 x 1.5 x 1.5 cm.
© Tom Loomis / Dakota Matrix

Malladrite: Na2SiF6  
Avogadrite: (K,Cs)BF4

Comments: Botryoidal pinkish-white avogadrite with yellow malladrite.
Location: Eruption of 1926, Vesuvius, Campania, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Malladrite: Na2SiF6  
Avogadrite: (K,Cs)BF4

Comments: Yellow-orange crystalline malladrite with pinkish white avogadrite.
Location: Eruption of 1926, Vesuvius, Campania, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species