Mine detail: Sierra Cuchillo District

Previously called 'Cuchillo Negro DistrictIron Mountain No. 2 District'

Location

Lat / long:

32.37513, -107.6256

Resource(B)

Primary:	Lead, Zinc
Secondary:	Fluorine-Fluorite, Gold, Silver, Copper
Tertiary:	Tungsten, Beryllium, Molybdenum, Iron
Discovery year:	1880

Production

Operation type:	Unknown
Deposit type:	CONTACT METASOMATIC
Production size:	Small
Development status:	Producer
First production started:	1880

Geology

Structure:

THE DISTRICT LIES WITHIN AN ELONGATE, NORTH-SOUTH TRENDING MOUNTAIN RANGE. LARGE DISPLACEMENT FAULTS WHICH ARE CONTINUOUS FOR GREAT LATERAL DISTANCES STRIKE NORTH TO NORTH-NORTHWEST AND SMALLER DISPLACEMENT CROSS FAULTS STRIKE NORTHEAST TO NORTHWEST. ON THE WESTERN SIDE OF THE RANGE A MAJOR ZONE OF WESTWARD DIPPING NORMAL FAULTS FORMS A WESTWARD FACING SCARP AND FORMS A SHARP BOUNDARY BETWEEN THE RANGE AND A WELL DEFINED GRABEN VALLEY. THE EASTERN BOUNDARY IS LESS DISTINCT AND IS GENERALLY MARKED BY EASTWARD DIPPING NORMAL FAULTS WHICH FORM A BROAD TRANSITION ZONE BETWEEN THE RANGE AND THE RIO GRANDE RIFT. A MAJOR CROSS FAULT DIVIDES THE RANGE INTO TWO FAULT BOUNDED BLOCKS OF EASTWARD DIPPING SEDIMENTARY ROCKS INTRUDED BY NUMEROUS HYPABYSSAL IGNEOUS ROCKS.

References

MRDS	W016587
DEP	60001709
Reference	{Deposit:: HARLEY, G.T., 1934 NMBMMR BULL 10, P.113-125}{Deposit:: JAHNS, R.H., 1955 NMGS 6TH FIELD CONFERENCE, P.159-174}{Deposit:: MCANULTY, W.N., 1978 NMBMMR MEMOIR 34, P. 51-54}