Mineral Specimen Images (M)

Montroydite: HgO

Comments: Red to orange radial and crystalline montroydite aggregates on black calcite.
Location: Terlingua, Brewster County, Texas, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Montroydite: HgO  
Pinchite: Hg++5O4Cl2

Comments: Minute lustrous black pinchite crystals on white montroydite.
Location: Terlingua, Brewster County, Texas, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Mooihoekite: Cu9Fe9S16

Comments: Lighter toned brassy metallic mooihoekite masses in chalcopyrite with magnetite.
Location: Oktyabr'skoye Mine, Norilsk, Krasnoyarsk Territory, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Mooihoekite: Cu9Fe9S16  
Haycockite: Cu4Fe5S8

Comments: B&W polished section image of mooihoekite-haycockite intergrowth showing tarnished mooihoekite (mh) and haycockite (hc). The small whitest lamellar grains are mackinawite.
Location: Hortonolite dunite (replacement,) pegmatite, Mooihoek Farm, Lydenburg District, Transvaal, South Africa. (AmMin, v57:689). Scale: See Image.
© American Mineralogist

Moolooite: Cu++(C2O4)·n(H2O) (n < 1)

Comments: Light bluish moolooite encrustation.
Location: Ibergstausee, Stempeda, Südharz, Thuringia, Germany. Scale: Picture size 0.9 mm.
© Thomas Witzke / Abraxas-Verlag

Mooreite: (Mg,Zn,Mn)15(SO4)2(OH)26·8(H2O)

Comments: Translucent, wedge-shaped crystals of mooreite on matrix.
Location: Franklin, Sussex County, New Jersey, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Moorhouseite: (Co,Ni,Mn)SO4·6(H2O)

Comments: Pink crystalline moorhouseite in sandstone.
Location: Cameron, Coconino County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Mopungite: NaSb(OH)6

Comments: White mopungite encrustations.
Location: Cetine di Cotorniano Mine (Cetine Mine), Rosia, Siena, Tuscany, Italy. Scale: Picture size 7 mm.
© Thomas Witzke / Abraxas-Verlag

Moraesite: Be2(PO4)(OH)·4(H2O)

Comments: Silky, tufted crystals of white moraesite on matrix.
Location: Divino das Laranjeiras, Minas Gerais, Brazil. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Moraesite: Be2(PO4)(OH)·4(H2O)  
Glucine: CaBe4(PO4)2(OH)4·0.5(H2O)

Comments: Light brown glucine with white moraesite.
Location: Boevskoye Mine, Sverdlovsk District, Middle Urals, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Mordenite: (Ca,Na2,K2)Al2Si10O24·7(H2O)  
Heulandite-Ca: (Ca,Na)2-3Al3(Al,Si)2Si13O36·12(H2O)

Comments: White, acicular crystals of mordenite in heulandite geode.
Location: Rock Creek, Stevenson, Skamania County, Washington, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Mordenite: (Ca,Na2,K2)Al2Si10O24·7(H2O)  
Heulandite-Ca: (Ca,Na)2-3Al3(Al,Si)2Si13O36·12(H2O)

Comments: Pink heulandite crystals up to 15 mm in fibrous white mordenite matrix.
Location: Rats Nest Claim, Challis, Custer Co., Idaho, USA. Scale: 6x6x4 cm.
© John Betts - Fine Minerals

Morenosite: NiSO4·7(H2O)

Comments: Pale greenish blue crust of morenosite.
Location: Gorner Glacier, Furi, Zermatt, Wallis (Valais), Switzerland. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Morimotoite: Ca3TiFe++Si3O12

Comments: Dark-brown morimotoite grains in calcite-wollastonite skarn from the type locality, ID confirmed by microprobe and XRD analyses.
Location: Fuka mine, Bitchu-cho (Bicchu-cho), Takahashi, Okayama Prefecture, Chugoku Region, Honshu Island, Japan. Collected by Igor V. Pekov in 2007 under supervising of the specie author from the same point of the outcrop as and holotype specimen. Scale: Specimen Size 17x12x7 mm.
© Pavel M. Kartashov

Morinite: NaCa2Al2(PO4)2(F,OH)5·2(H2O)

Comments: Pale violet crystalline morinite in white crystalline fluorapatite.
Location: Hugo Mine, Keystone, Pennington County, South Dakota, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Morinite: NaCa2Al2(PO4)2(F,OH)5·2(H2O)

Comments: Sky blue spheroidal to globular cyrstals of cuprian morinite to 1mm with other phosphates.
Location: Silver Coin Mine, Humboldt Co., Nevada, USA. Scale: Overall: 6 x 5 x 2.5 cm.
© Tom Loomis / Dakota Matrix

Mosandrite: Na(Na,Ca)2(Ca,Ce,Y)4(Ti,Nb,Zr)(Si2O7)2(O,F)2F3

Comments: Yellow to brown resinous crystalline mosandrite with black aegirine.
Location: Khibiny Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Moschellandsbergite: Ag2Hg3

Comments: Gray metallic dendritic moschellandsbergite aggregate.
Location: Moschellandsberg, Rheinland-Pfalz, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Moschellandsbergite: Ag2Hg3

Comments: Moschellandsbergite 4mm crystal on matrix.
Location: Carolina Mine, Moschellandsberg, Obermoschel, Rhineland-Palatinate, Germany. Scale: Specimen Size 6.0 x 4.8 x 4.0 cm.
© Rob Lavinsky

Mosesite: Hg2N(Cl,SO4,MoO4,CO3)·(H2O)

Comments: Yellow, hoppered crystal of mosesite on matrix.
Location: Terllingua, Brewster County, Texas, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals