Big Bertha Mine (Big Bertha pegmatite), South Platte Pegmatite District, Jefferson Co., Colorado, USA
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A pegmatite mine located in the SW¼ Sec 22, T.8S., R.70W.
Mineralization is an unzoned, lobate pegmatite body in granite.
Workings include a large open cut.
10 entries listed. 4 valid minerals.
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