As recorded:
Aggregate Industries Quarry, Ashland, Middlesex County, Massachusetts, USA
Collected by:
Photo added to mindat.org
“Orthoclase/microcline crystals to 5 mm sprinkled with green black chlorite. EDS analysis showed this to be a potassium feldspar. P. Cristofono specimen and photo, field collected 2006.”
Peter Cristofono - 2nd October 2006
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10,444,123 minIDs have been issued as of 30th Apr 2024 10:24 pm UTC