Mine detail: Franklin Mine

Previously called 'Franklin-Sterling Hill Zn-Mn-Fe MinesFranklin FurnaceFranklin-Sterling Hill Zinc Mine'

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Location

Lat / long:

41.11888, -74.58736

Resource(M)

Primary:	Zinc
Secondary:	Iron, Manganese
Tertiary:	Cobalt, Molybdenum, Nickel
Ore:	Willemite, Franklinite, Zincite, Sphalerite
Gangue:	Calcite, Augite, Diopside, Biotite
Orebody form:	CONFORMABLE, SYNCLINAL
Other material:	Molybdenite, Chloanthite, Arsenopyrite, Pyrite, Descloizite
Discovery year:	1750

Production

Operation type:	Unknown
Production size:	Medium
Development status:	Past Producer
First production started:	1845

Geology

Host rock:	Franklin Marble Formation
Host type:	Marble
Associated rock:	Cork Hill gneiss, Furnace Magnetite Bed, Hardyston Quartzite, Kittatinny Limestone
Associated type:	Gneiss,Quartzite,Limestone
Structure:	Major Syncline, Numerous Cross Folds, Faults, Fractures
Tectonic:	Epicratonic Basin
Alteration processes:	Dolomitization

References

MRDS	W019035
DEP	10073174
Reference	{Commodity:: BILBREY, J. H., 1962, COBALT, A MATERIALS SURVEY: U.S. BUREAU OF MINES INFORMATION CIRCULAR 8130, P. 30.}{Deposit:: PALACHE, C., 1935, THE MINERALS OF FRANKLIN AND STERLING HILL, SUSSEX COUNTY NEW JERSEY: U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 180.}{Deposit:: PINGER, A. W., 1950, GEOLOGY OF THE FRANKLIN - STERLING AREA, SUSSEX COUNTY, NEW JERSEY; INTERNATIONAL GEOLOGICAL CONGRESS, 18TH, PT. 7 P. 77 - 87.}{Deposit:: BROWN, J.S., ORE DEPOSITS OF THE NORTHEASTERN UNITED STATES, IN RIDGE, J.D., ED., ORE DEPOSITS OF THE UNITED STATES 1933-1967 (GRATON-SALES VOLUME) V. 1: AMERICAN INSTITUTE OF MINING, METALLURGICAL AND PETROLEUM ENGINEERS, P. 1-19.}
Reporter	Woodruff, Laurel G., Coury, Anny B., King, Robert U., Schruben, Paul G. and Wedow, H., Whitlow, S.