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Matildite: AgBiS2 Bismuth: Bi Bismuthinite: Bi2S3
Comments: SEM image of native Bi replaced by bismuthinite and matildite. Black areas represent gangue minerals. (CanMin, v43:899). Location: Uranium deposit at Niederschlema-Alberoda, Germany. Scale: See Image. © Canadian Mineralogist
Mazzettiite: Ag3HgPbSbTe5
Comments: Back-scattered electron photograph (SEM) of mazzettiite (M), associated with altaite (A), galena (G) and quartz (Q). Location: Museum specimen in the Mineralogical Collection of the Institut royal des Sciences naturelles de Belgique, Bruxelles (Belgium). Findlay Gulch, Saguache Co., Colorado, USA. Scale: See Image. © Canadian Mineralogist
Mertieite-II: Pd8(Sb,As)3
Comments: Oil immersion hotomicrograph of inclusions of mertieite-II in matrix of Pt-Fe alloy (CanMin, v 42, p 614). Location: Kondyor PGE placer, Khabarovskiy Kray, eastern Siberia, Russia. Scale: See Image. © Canadian Mineralogist
Miessiite: Pd11Te2Se2
Comments: B&W optical image of miessiite grain. (CanMin, v45:1221). Location: Miessi River placers, Lemmenjoki area, Inari commune, Lapland, Finland.. Scale: See Image. © Canadian Mineralogist
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
Monazite-(Sm): SmPO4
Comments: Back-scattered electron image of the main aggregate of monazite-(Sm) and manganocolumbite (C) embedded in quartz (black). Variations in brightness of the monazite-(Sm) are controlled by the Th content, whereas the ratio Nb/Ta affects manganotantalite. Location: Annie Claim #3 pod, Greer Lake intrusion, Archean Bird River Subprovince of the Superior Province, Southeastern Manitoba, Canada. Scale: Grain size 0.8 mm. © Canadian Mineralogist
Montetrisaite: Cu6(SO4)(OH)10·H2O
Comments: SEM image of montetrisaite showing the splintery fracture. {010} face is shown. (CanMin, v47:143). Location: Monte Trisa, Torrebelvicino, Vicenza, Italy. Scale: See Image. © Canadian Mineralogist
Monticellite: CaMgSiO4 Melilite: (Ca,Na)2(Al,Mg,Fe++)(Si,Al)2O7
Comments: Thin-section image of monticellite interstitial between unaltered melilite crystals (CanMin v. 41. p 1259). Location: Skarns along the contact of a diorite intrusion at Oravit¸a, Banat, in Romania. Scale: Field of View 2.7 mm. © Canadian Mineralogist
Mozgovaite: PbBi4(S,Se)7
Comments: B&W image of a polished section.The black matrix is epoxy. The black spots on the crystal are the trace of microhardness indenter. Location: Fumarole in La Fossa crater on Vulcano, Aeolian Islands, Italy. (CanMin v37:1499). Scale: Crystal Length 165 µm. © Canadian Mineralogist
Nickelaustinite: Ca(Ni,Zn)(AsO4)(OH)
Comments: Stellate aggregate of acicular nickelaustinite crystals associated with rhombohedral dolomite crystals. (CanMin, v25:401). Location: Bou Azzer, Anti-Atlas Mountains, Morocco. Scale: Scale Bar 100 µm. © Canadian Mineralogist