Mineral Species: Feldspar
Chemical Formula: (Na,Ca)Al1-2Si3-2O8
Mohs Scale Hardness: 6 - 6.5
Location: Madagascar, Russia
Typical Appearance: Dark grey with vivid flashes of blue or gold.
Mineral Species: Feldspar
Chemical Formula: (Na,Ca)Al1-2Si3-2O8
Mohs Scale Hardness: 6 - 6.5
Location: Madagascar, Russia
Typical Appearance: Dark grey with vivid flashes of blue or gold.