Properties & Information
Mimetite
MimetiteSCIENCE / MINERALOGYMimetite is a lead arsenate chloride mineral, Pb₅(AsO₄)₃Cl, in the apatite group. It crystallizes in the hexagonal system and commonly forms yellow, orange, brown, or green prismatic, barrel-shaped,...
Mimetite
MimetiteSCIENCE / MINERALOGYMimetite is a lead arsenate chloride mineral, Pb₅(AsO₄)₃Cl, in the apatite group. It crystallizes in the hexagonal system and commonly forms yellow, orange, brown, or green prismatic, barrel-shaped,...
Midnight Lace Obsidian
Midnight Lace ObsidianSCIENCE / MINERALOGYMidnight Lace Obsidian is a trade variety of dark volcanic glass showing pale, gray, or flowing lace-like bands and spherulitic textures. It is amorphous silica-rich glass...
Midnight Lace Obsidian
Midnight Lace ObsidianSCIENCE / MINERALOGYMidnight Lace Obsidian is a trade variety of dark volcanic glass showing pale, gray, or flowing lace-like bands and spherulitic textures. It is amorphous silica-rich glass...
Mica in Quartz
Mica in QuartzSCIENCE / MINERALOGYMica in Quartz is a multi-mineral material in which quartz, SiO₂, contains plates or books of mica such as muscovite, biotite-series mica, lepidolite, or related sheet...
Mica in Quartz
Mica in QuartzSCIENCE / MINERALOGYMica in Quartz is a multi-mineral material in which quartz, SiO₂, contains plates or books of mica such as muscovite, biotite-series mica, lepidolite, or related sheet...
Meteoric Amethyst (Canadian)
Meteoric Amethyst (Canadian)SCIENCE / MINERALOGYMeteoric Amethyst is a locality/trade name for amethyst-bearing quartz marketed from a Canadian impact-related geological region. Mineralogically the purple crystal is still quartz, SiO₂; the trade...
Meteoric Amethyst (Canadian)
Meteoric Amethyst (Canadian)SCIENCE / MINERALOGYMeteoric Amethyst is a locality/trade name for amethyst-bearing quartz marketed from a Canadian impact-related geological region. Mineralogically the purple crystal is still quartz, SiO₂; the trade...
Zoisite
ZoisiteSCIENCE / MINERALOGYZoisite is a calcium aluminum sorosilicate, Ca₂Al₃(SiO₄)₃(OH), crystallizing in the orthorhombic system. It occurs in green, gray, pink, yellow, blue-violet, and other colors; tanzanite and thulite are well-known...
Zoisite
ZoisiteSCIENCE / MINERALOGYZoisite is a calcium aluminum sorosilicate, Ca₂Al₃(SiO₄)₃(OH), crystallizing in the orthorhombic system. It occurs in green, gray, pink, yellow, blue-violet, and other colors; tanzanite and thulite are well-known...
Zircon
ZirconSCIENCE / MINERALOGYZircon is zirconium silicate, ZrSiO₄, crystallizing in the tetragonal system. It occurs in colorless, brown, red, orange, yellow, green, and blue varieties and has very high refractive index.GEOLOGY...
Zircon
ZirconSCIENCE / MINERALOGYZircon is zirconium silicate, ZrSiO₄, crystallizing in the tetragonal system. It occurs in colorless, brown, red, orange, yellow, green, and blue varieties and has very high refractive index.GEOLOGY...