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Franklinite on calcite matrix. Sterling Hill Mine, Ogdensburg, New Jersey. 7 x 4 x 4 cm. Main crystal 1,5 cm on edge. (Author: Antonio Alcaide)

Franklinite on calcite matrix. Sterling Hill Mine, Ogdensburg, New Jersey. 7 x 4 x 4 cm. Main crystal 1,5 cm on edge. (Author: Antonio Alcaide)

Dimensions: 600 x 375
File size: 32.07 kbytes
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