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Kinoite: Ca2Cu2Si3O8(OH)4 Dioptase: CuSiO2(OH)2
Comments: Fibrous crystals of blue-green dioptase to 0.75mm on clear apophyllite associated with dark blue kinoite. Location: Christmas mine, Gila Co., Arizona, USA. Scale: Pictures size 6 mm. © Tom Loomis / Dakota Matrix
Kinoite: Ca2Cu2Si3O8(OH)4
Comments: Kinoite crystals as single tabular or platy blue crystals to about 0.3mm and as fan-like sprays. The crystals exhibit striations, a key to distinguishing it from stringhamite. Location: Christmas mine, Gila Co., Arizona, USA. Scale: Picture size 3 mm. © Tom Loomis / Dakota Matrix
Kinoite: Ca2Cu2Si3O8(OH)4 Apophyllite: KCa4(Si4O10)2F·8(H2O)
Comments: Crystals of dark blue kinoite and clear apophyllite. Location: Christmas Mine, Gila County, Arizona, USA. Scale: Crystal size 2.5 mm. © John Veevaert