Mine detail: Trench and Josephine Mine Group

Previously called 'Josephine MinesLunch Cans Prospect'

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Location

Lat / long:

31.46542, -110.72956

Resource(M)

Primary:	Zinc, Silver, Lead
Secondary:	Copper, Gold
Tertiary:	Manganese
Ore:	Alabandite, Freibergite, Galena, Pyrite, Pyromorphite, Rhodochrosite, Sphalerite, Tetrahedrite
Orebody form:	POCKETS
Discovery year:	1855

Production

Operation type:	Unknown
Production size:	Small
Development status:	Producer
First production started:	1893
Last production ended:	1965

Geology

Host type:	Rhyolite
Associated rock:	Josephine Canyon Diorite
Associated type:	Diorite,Trachyandesite
Structure:	Rhyolite Similar To That Of Red Mountain, Vein And Ore Are Banded, Porous, And Drusy; Ore Zoneis Narrow And Pinches Out In Places
Tectonic:	Meadow Valley Trachyandesite Flow; Thick Lava Flows Of Harshaw-Trench Camp Area
Alteration processes:	Pyrite Gossan

References

MRDS	M899918
DEP	10048334
Reference	{Deposit:: ABGMT-USBM FILE DATA}{Deposit:: USBM FILES, TRENCH MINE}{Deposit:: SCHRADER, FRANK C., 1915, MINERAL DEPOSITS OF THE SANTA RITA AND PATAGONIA MOUNTTAINS, ARIZONA; USGS BULLETIN 582, P. 253-254}{Deposit:: KARTCHNER, WAYNE E., 1944, THE GEOLOGY AND ORE DEPOSITS OF A PORTION OF THE HARSHAW DISTRICT, PATAGONIA MOUNTAINS, ARIZONA; PHD. THESIS, UNIVERSITY OF ARIZONA,P. 88-90.}{Deposit:: ADMR FILES, TRENCH MILL}{Deposit:: ABGMT CLIPPINGS FILE, TRENCH MINE}{Deposit:: SIMONS, FRANK S. 1974, GEOLOGIC MAP AND SECTIONS OF THE NOGALES AND LOCHIEL QUADRANGLES, SANTA CRUZ COUNTY, ARIZONA; USGS MAP I-762 (1:48000)}{Deposit:: KEITH, STANTON B., 1975, INDEX OF MINING PROPERTIES IN SANTA CRUZ COUNTY, ARIZONA; ARIZONA BUREAU OF MINES BULLETIN 191, P. 59}{Deposit:: ABGMT FILES, STANTON B. KEITH}{Deposit:: SIMONS, FRANK S., 1972, MESOZOIC STRATIGRAPHY OF THE PATAGONIA MOUNTAINS AND ADJOINING AREAS, SANTA CRUZ COUNTY, ARIZONA; USGS PROFESSIONAL PAPER 658-E, P. 21-22}
Reporter	Calder, Susan R.