Mineral: Basalt, Dolerite
Color: Multiple
Country: Afars and Issas
Year: 1971
Set: Afars and Issas - 1971
Thin slice of Basalt and Dolerite (also known as Diabase) from Afars and Issas, viewed with polarized light.
Thanks to Professor Grubessi Odino (GeoStamps) for contributing this beautiful stamp.
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