Mine detail: Spencer Farm Prospect

Previously called ''

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Location

Lat / long:

38.90392, -77.4733

Resource(M)

Primary:	Copper
Ore:	Chalcocite, Malachite
Orebody form:	IRREGULAR VEINLETS
Discovery year:	1947

Production

Operation type:	Unknown
Production size:	None
Development status:	Occurrence

Geology

Host rock:	Diabase Sill;Balls Bluff Siltstone, Bull Run Shale, Newark Group
Host type:	Mudstone,Siltstone,Sandstone
Associated rock:	Diabase
Associated type:	Diabase
Structure:	Ne-Sw Trend, Culpeper Triassic Basin ; Reg.Trends: Northeast-Southwest
Tectonic:	Basin, Piedmont

References

MRDS	W000341
DEP	10067557
Reference	{Deposit:: LUTTRELL, G.W., 1966, BASE- AND PRECIOUS-METAL AND RELATED ORE DEPOSITS OF VIRGINIA: VIRGINIA DIVISION OF MINERAL RESOURCES, MINERAL RESOURCES REPORT 7, 167 P.}{Deposit:: CANNON, R. S. JR., UNPUB. MEMO IN CU COMMODITY FILE , U.S. GEOLOGICAL SURVEY.}{Deposit:: DRAKE, A.A., JR., AND FROELICH, A.J., 1977, BEDROCK MAP OF FAIRFAX COUNTY, VIRGINIA: U.S. GEOLOGICAL SURVEY OPEN FILE MAP 77-523, 1 SHEET, SCALE 1:48 000.}{Deposit:: MILTON, CHARLES, 1948, GEOCHEMISTRY REPORT F-61 IN CU COMMODITY FILES: U.S. GEOLOGICAL SURVEY REPORT FOR R.S. CANNON.}{Deposit:: 1948 GEOCHEM USGS-C.MILTON; GOOD CU TEST}{Reserve-Resource:: CANNON UNPUBLISHED MEMO}
Reporter	Wright, Nancy A., Meintzer, Robert E. (Le Van, D.C.)