Greenstone Quarry, GAF Ruberoid Mill, Blue Ridge Summit, Adams Co., Pennsylvania, USA
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|Latitude & Longitude (WGS84):||39° 44' 50'' North , 77° 27' 19'' West|
|Latitude & Longitude (decimal):||39.7472222222, -77.4552777778|
Native copper occurs in quartz veins and epidote-rhyolite host rock. Secondary copper mineralization is present. Epidote-rhyolite is quarried for use as an aggregate in the production of roofing shingles. The operation currently includes 625 acres housing quarries, mills and color processing units.
6 entries listed. 6 valid minerals.
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