Mine detail: Four Peaks Mine

Previously called ''

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Location

Lat / long:

33.67257, -111.3321

Resource(B)

Primary:	Gemstone, Semiprecious Gemstone, Quartz
Secondary:	Iron
Ore:	Amethyst, Hematite, Specularite
Discovery year:	1925

Production

Operation type:	Unknown
Production size:	Yes
Development status:	Producer
First production started:	1942

Geology

Host rock:	Four Peaks (Mazatzal Group)
Host type:	Quartzite
Associated rock:	Mazatzal Granite
Associated type:	Granite
Structure:	Roof Pendant Of Mazatzal Group Quartzite On Mazatzal Granite Folded Into A Syncline., Fault
Tectonic:	Remnant Of A Large Precambrian Thrust Sheet.

References

MRDS	TC10270
DEP	10060269
Reference	{Deposit:: LOWELL, J., 1976, MINERALIZATION OF THE FOUR PEAKS AMETHYST DEPOSIT, MARICOPA COUNTY, ARIZONA: MINERALOGICAL RECORD, MARCH-APRIL 1976, P. 72-77.}{Deposit:: JAEGER, F.P., 1985, A VISIT TO THE FOUR PEAKS AMETHYST MINE: GEMS AND MINERALS, NOV. 1985, P. 8-9, 48-49.}{Deposit:: ESTRAOA, L., J.J., 1987, GEOLOGY OF THE FOUR PEAKS AREA, ARIZONA: UNPUBLISHED M.S. THESIS, ARIZONA STATE UNIVERSITY, TEMPE, 76 P.}{Deposit:: PEIRCE, H.W., 1969, GEM MATERIALS, IN USGS, ABM, AND USBR, MINERAL AND WATER RESOURCES OF ARIZONA: ABM BULLETIN 180, USGS BULLETIN 871, P. 359.}{Deposit:: BLAIR, GERRY, 1992, THE ROCKHOUN * GUIDE TO ARIZONA: HELENA, MONTANA, FALCON PRESS, 165 P.}{Other Database:: CIMRI}
Reporter	Carbonaro, Marguerite M. (Long, Keith R.), Orris, Greta J.