Mineral Resource Map
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Mine detail: Twin Sister
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North America
United States
Colorado
Boulder
Previously called ''
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Location
Lat / long:
40.23578, -105.54119
Resource(M)
Primary:
Beryllium
Production
Operation type:
Surface
Development status:
Past Producer
Geology
References
MAS
80130805
DEP
10190508
Reference
COLO BOM 1972 LIST
Reporter
Intermountain Field Operations Center (IFOC)