23
Nov
Calcite Information
Calcite
Formula: CaCO3
Colour: White, Yellow, Red, Orange, Blue, Green, Brown, Gray etc.
Lustre: Vitreous, Sub-Vitreous, Resinous, W...
04
Nov
Ruby deposit from Afghanistan
Click to download article Ruby deposit from Afghanistan
04
Apr
Descloizite
Named in 1854 by Augustin Alexis Damour in honor of Alfred Louis Olivier Le Grand Des Cloizeaux , Professor of Mineralogy, University o...