At-A-Glance
Country of Origin
SD
United States
Photos
Essential Information
Specimen ID
3772
Mineral Name
Cassiterite
Chemical Formula
SnO2
Additional Details
Associated Minerals
Muscovite
Quartz
Associated Rock Matrix
Granite pegmatite
Specimen Number
049
Physical Description
Black grains in granite pegmatite
Geographic Origin
Locality Nickname
Etta Mine, Pennington Co., South Dakota
Locality Lat/Long
43.8901111, -102.2547919
Mining District
Keystone District
Mine Name
Etta Mine
MinDat Locality URL
Additional Details
Original Attributed Locality
South Dakota
Pennington County