K Feldspar (Var: Adularia), Quartz, Chalcopyrite, Datolite

Specimen ID: NL5-3JY

Mineral(s)
K Feldspar (Var: Adularia) : KAlSi3O8
Quartz : SiO2
Chalcopyrite : CuFeS2
Datolite : CaB(SiO4)(OH)
Locality
As recorded:
U. S. Route 7 Expressway, Brookfield, Fairfield County, Connecticut, USA
Mindat locality:
Dimensions
9.5cm x 5cm x 4cm
weight: 242g
Events

Photo added to mindat.org

Datolite crystal with chalky white surface. In an Alpine cleft with quartz, adularia, chalcopyrite, laumontite.
Harold Moritz - 19th August 2018

Photo added to mindat.org

Datolite crystals with chalky white surface on metallic chalcopyrite, in Alpine cleft with microcrystalline adularia and quartz.
Harold Moritz - 19th August 2018

Photo added to mindat.org

Chalcopyrite crystals sprinkled with datolite on quartz. In an Alpine cleft in gneiss.
Harold Moritz - 19th August 2018

Photo added to mindat.org

Creamy adularia crystals with drusy quartz and metallic dark chalcopyrite microcrystals in an Alpine cleft.
Harold Moritz - 19th August 2018
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