Single well terminated transparent crystal. Pale sky blue color. This specimen is from Teofilo Otoni, Mucuiri Valley, Minas Gerais, Brazil
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|Dimensions||4.7 × 0.8 × 0.8 cm|
Copper “Skull” from Centennial Mine, Houghton Co., Michigan. Seldom seen formation which occurs when copper is deposited around cobbles in a conglomerate lode. The cobble deteriorates over time and leaves the copper “skull” formation. Specimen size is 95x85x40mm. From Ed Coleman Collection.