Mineral Specimen Images (M)

Milotaite: PdSbSe

Comments: Polished section image of milotaite (mi) which occurs as subhedral, minute inclusions in eucairite (eu)-tiemannite(ti). bo (bornite), di (selenian digenite), (CanMin, v43:689).
Location: Predborice, Czech Republic. Scale: See Image.
© Canadian Mineralogist

Mimetite: Pb5(AsO4)3Cl  
Duftite-alpha: PbCu(AsO4)(OH)

Comments: Mimetite crystals are replaced by Duftite-alpha on a gossanous matrix.
Location: Mt. Bonnie Mine, Northern Territory, Australia. Scale: Crystal size to 3mm.
© John Veevaert

Mimetite: Pb5(AsO4)3Cl  
Cerussite: PbCO3

Comments: Creamy white crystal of cerussite measuring 11 x 22 mm in size nestled nicely in a vug which is lined by bright-yellow, lustrous, prismatic mimetite crystals. The mimetites average 5 mm in length.
Location: Tsumeb mine, Tsumeb, Namibia. Scale: 3.5 x 4.5 x 2.5 cm.
© Dan Weinrich

Mimetite: Pb5(AsO4)3Cl

Comments: Crystals of tan colored Mimetite. The largest crystal is 1 cm across.
Location: Mt. Bonnie Mine, Northen Territory, Austalia. Scale: 2.9 x 1.7 cm.
© John Veevaert

Mimetite: Pb5(AsO4)3Cl  
Plumbogummite: PbAl3(PO4)2(OH)5·(H2O)

Comments: White, fuzzy aggregates of plumbogummite covering lime green mimetite (campylite) crystals.
Location: Caldbeck Fells, Cumbria, England. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Mimetite: Pb5(AsO4)3Cl  
Wulfenite: PbMoO4

Comments: Gemmy, pale yellow mimetite crystal with brownish-orange wulfenite. Former James and Dawn Minette Collection.
Location: Gem Pocket 1971, Tsumeb, Namibia. Scale: 2 x 1 x 1 cm.
© Rob Lavinsky

Mimetite: Pb5(AsO4)3Cl  
Joelbruggerite: Pb3Zn3Sb+++++As2O13(OH)

Comments: SEM image of a barrel-shaped joëlbruggerite crystal lanced by acicular mimetite. (AmMin, v94:1012).
Location: Black Pine mine, 14.5 km northwest of Philipsburg, Granite County, Montana, USA. Scale: Crystal Size 30 µm across.
© American Mineralogist

Minamiite: (Na,Ca,K)Al3(SO4)2(OH)6

Comments: White granular powdery minamiite aggregate.
Location: Okumanza, Gumma, Japan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Minasgeraisite-(Y): CaY2Be2Si2O10

Comments: SEM image of spherical aggregate of growth-zoned minasgeraisite crystals showing elongation along a and simple pedion termination. (AmMin, v71:603).
Location: Lawa de Sr. Jose Pinto pegmatite body, Jaguaracu, Municipo de Timoteo, Minas Gerais, Brazil. Scale: Tick Marks 10 µm.
© American Mineralogist

Minasragrite: VO(SO4)·5(H2O)  
Patronite: VS4

Comments: Blue coatings of minasragrite on patronite.
Location: Minas Ragra, near Cerro de Pasco, Junin, Peru. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Minehillite: (K,Na)2-3Ca28(Zn4Al4Si40)O112(OH)16  
Margarosanite: Pb(Ca,Mn++)2Si3O9  
Wollastonite-1A: CaSiO3

Comments: White pearly crystalline minehillite with white margarosanite and dark gray lead, in pale pink opaque wollastonite (distinguished by blue-white fluorescence).
Location: Franklin, Sussex County, New Jersey, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Minium: Pb++2Pb++++O4

Comments: Bright orange minium with curved, conchoidal surfaces.
Location: Santa Fé Mine, Bolaños, Mun. de Bolaños, Jalisco, Mexico. Scale: 33x22x14 mm.
© John Betts - Fine Minerals

Minnesotaite: (Fe++,Mg)3Si4O10(OH)2

Comments: Greenish-gray dull minnesotaite masses in iron ore matrix.
Location: Virginia, Saint Louis County, Minnesota, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Minrecordite: CaZn(CO3)2  
Dioptase: CuSiO2(OH)2

Comments: Blue-green dioptase covered with minute, rhombic crystals of transparent minrecordite one mm or less in size.
Location: Tsumeb Mine, Tsumeb, Namibia. Scale: Picture size 1 cm.
© John Veevaert

Minrecordite: CaZn(CO3)2  
Wendwilsonite: Ca2(Mg,Co)(AsO4)2·2(H2O)

Comments: Wendell Wilson, publisher, editor-in-chief of the Mineralogical Record, and the person whom wendwilsonite was named after, kindly provided the mineral name pronunciations for minrecordite and wendwilsonite.
Location: Tucson Convention Center, 50th Tucson Gem and Mineral Show, February 14, 2004. Scale: NA.
© Dave Barthelmy

Minyulite: KAl2(PO4)2(OH,F)·4(H2O)

Comments: Crystals of minyulite on matrix.
Location: St. John's Quarry, Kapunda, South Australia. Scale: Crystal size 4-5 mm to 5 mm.
© John Veevaert

Minyulite: KAl2(PO4)2(OH,F)·4(H2O)  
Sincosite: Ca(V++++O)2(PO4)2·5(H2O)

Comments: Pale greenish white acicular radial sprays of minyulite to 8mm with small, green, tabular sincosite.
Location: Ross Hannibal mine, Lawrence County, South Dakota. Scale: Picture size 2 cm.
© Tom Loomis / Dakota Matrix

Minyulite: KAl2(PO4)2(OH,F)·4(H2O)  
Aldermanite: Mg5Al12(PO4)8(OH)22·32(H2O)

Comments: White, blocky aldermanite crystals to 2mm completely covering one face of matrix with colorless prismatic Minyulite crystals in sprays to 3mm.
Location: Tom's Phosphate quarry, Kapunda, South Australia, Australia. Scale: Overall: 2 x 1.5 x 2 cm.
© Tom Loomis / Dakota Matrix

Mirabilite: Na2SO4·10(H2O)

Comments: Colorless grains and indistinct crystals of mirabilite. The mineral dehydrates quickly in dry air and must be preserved in a closed box.
Location: Willi Agatz Mine, Dresden, Saxony, Germany. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Misenite: K8H8(SO4)7 (?)

Comments: Colorless absolutely transparent misenite microcrystal (blue box), on white and orange halite..
Location: Cerros Pintados, Pampa del Tamarugal, Iquique Province, Tarapacá Region, Chile. Scale: Approximately 0.05 cm crystal.
© Jeff Weissman / Photographic Guide to Mineral Species