Barrett Brothers Quarry (D and J Quarry), Beacon Falls, New Haven Co., Connecticut, USA
Superb specimens of quartz with zeolites and adularia in alpine clefts through a gneissic or schistose rock were recovered in the left portion of the quarry.
A variety of copper minerals occur at this medium-sized quarry. The copper minerals occur in schist. Primary metallic minerals are chalcopyrite, arsenopyrite, chalcocite, and questionable covellite. Secondary minerals are abundant on schist facies; brochantite is the most common secondary (pseudomalachite is questionable). Allophane and Arsenic were erroneously reported.
2/26/2007 -Linarite and brochantite were identified on samples collected at the mine.
33 entries listed. 26 valid minerals. 2 erroneous literature entries.
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Locality Updated: Larson Exploration Prospect, Menominee Range, Florence Co., Wisconsin, USAFrom Bill Cordua, 19th Jun 2013 03:45:17