Mineral: Bauxite, Chalcopyrite, Psilomelane
Color: Brown, Yellow
Country: India
Year: 2001
Bauxite, Chalcopyrite, Psilomelane (respectively aluminium ore, copper ore, and manganese ore) from India.
The stamp commemorates the 150th anniversary of the Geological Survey of India.
http://www.gsi.gov.in/stamp.htm
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