Pyroxene Granite

Gray- to buff- or white-weathering, greenish-gray, medium- to coarse-grained, massive, gneissoid to indistinctly foliated granite containing mesoperthite to microantiperthite, quartz, oligoclase, and clinopyroxene. Common accessory minerals include titanite, magnetite, apatite, and trace amounts of pyrite. Some phases are monzonite, quartz monzodiorite, or granodiorite. Locally includes small bodies of amphibolite not shown on map.
State New Jersey
Name Pyroxene Granite
Geologic age Middle Proterozoic
Lithologic constituents
Major
Igneous > Plutonic > Granitic > GraniteGray- to buff- or white-weathering, greenish-gray, medium- to coarse-grained, massive, gneissoid to indistinctly foliated granite containing mesoperthite to microantiperthite, quartz, oligoclase, and clinopyroxene. Common accessory minerals include titanite, magnetite, apatite, and trace amounts of pyrite.
Minor
Igneous > Plutonic > Dioritic > Quartz-monzodiorite
Igneous > Plutonic > Granitic > Granodiorite
Igneous > Plutonic > Syenitic > Monzonite
Incidental
Metamorphic > AmphiboliteLocally includes small bodies of amphibolite not shown on map.
Comments Lake Hopatcong Intrusive Suite (Middle Proterozoic) (Drake and Volkert, 1991)
References
NGMDB product
Counties Hunterdon - Morris - Passaic - Sussex - Warren