Barrett Brothers Quarry (D and J Quarry), Beacon Falls, New Haven Co., Connecticut, USA

• Display
  • Standard
  • Detailed
  • By Strunz Category
  • By Dana Category
• Photos
  • Mineral Photos (16)
  • - Full View (10)
  • - Photomicrograph (3)
  • - Stacked Photomicrograph (3)
  • Add Photo
• Maps
  • Map Pages
  • Nearest Localities
• Search
  • Mineral Search
  • Search Google
• Discussion
  • Talk Pages

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.

Mineral List

Albite Allophane Almandine Analcime Anglesite Anhydrite Arsenic Arsenopyrite Brochantite

Calcite Cerussite Chalcanthite Chalcocite Chalcopyrite 'Chlorite Group' Chrysotile ? Covellite ? Cuprite

Epidote Gypsum 'Hornblende' 'K Feldspar var: Adularia' Kyanite 'Limonite' Linarite Malachite Pseudomalachite ?

Pyrite Quartz Schorl Staurolite 'Stilbite' Titanite

33 entries listed. 26 valid minerals. 2 erroneous literature entries.