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Wollastonite-1A: CaSiO3 Stringhamite: CaCuSiO4·2(H2O)
Comments: Rounded aggregate of dark blue stringhamite crystals on bladed, white wollastonite.
Location: Christmas mine, Hayden, Gila County, Arizona, USA.
Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals
Wollastonite-1A: CaSiO3 Minehillite: (K,Na)2-3Ca28(Zn4Al4Si40)O112(OH)16 Margarosanite: Pb(Ca,Mn++)2Si3O9
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