Mine detail: Griggstown Mine

Previously called 'Franklin Mine'

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Location

Lat / long:

40.42612, -74.61209

Resource(M)

Primary:	Copper
Ore:	Chalcocite, Chalcopyrite, Chrysocolla, Copper, Cuprite, Malachite
Gangue:	Epidote, Hematite, Magnetite, Tourmaline
Discovery year:	1753

Production

Operation type:	Unknown
Deposit type:	Unknown
Production size:	Small
Development status:	Occurrence
First production started:	1765

Geology

Host type:	Shale
Associated rock:	Rocky Hill
Associated type:	Diabase
Tectonic:	Newark Rift Basin

References

MRDS	W044261
DEP	10093858
Reference	LEWIS, J.V., 1907, COPPER DEPOSITS OF THE NEW JERSEY TRIASSIC, ECON. GEO., VOL II, NO.
Reporter	Master, Julian A. (Bell, Christy A.)