Brandywine Quarry (Hubbard Quarry), Wilmington, New Castle Co., Delaware, USA

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A quarry in gabbro. Located ¼ mile NW of the former Baltimore & Ohio RR bridge over Brandywine Creek. Workings were 800 feet wide and 100 feet deep (or high at the face).

References:
American Mineralogist (1924): 9: 1-5.

Rocks & Minerals (1936): 11: 216.

Rocks & Minerals (1946): 21: 280-281

Mineral List:

Apatite-(CaF)
Biotite
Bornite
Calcite
'Chabazite'
Chalcocite

Chalcopyrite
'Chlorite Group'
Hisingerite
Laumontite
Malachite
Marcasite

Natrolite
Orthoclase
Pyrite
Pyrrhotite
Quartz
'Stilbite'

18 entries listed. 14 valid minerals.

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