Cyclosilicates

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Cordierite #1 XPL

Cordierite thin section

For Pierre Louis A. Cordier (1777-1861), French mining engineer and geologist. Formula: Mg2Al3(AlSi5)O18 System: Orthorhombic Color: Grey, blue, blue-violet, etc. Lustre: Vitreous Hardness: 7–7½ Density: 2.6–2.66 GET 360° LIVE INTERACTION Relief: Low...