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Fluorapatite crystals in actinolite schist.  Silver Hill quarry, Brecknock Township, Lancaster Co.  The main crystal is 3 cm. (Author: John S. White)

Fluorapatite crystals in actinolite schist. Silver Hill quarry, Brecknock Township, Lancaster Co. The main crystal is 3 cm. (Author: John S. White)

Dimensions: 750 x 563
File size: 59.9 kbytes
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