Mine detail: Twig Mine

Previously called 'Hogan Twigg Claim'

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Location

Lat / long:

33.21177, -109.36454

Resource(M)

Primary:	Gold, Lead
Secondary:	Silver, Copper
Tertiary:	Zinc
Ore:	Anglesite, Galena, Vanadinite, Wulfenite
Gangue:	Calcite, Magnetite, Pyromorphite
Orebody form:	IRREGULAR

Production

Operation type:	Unknown
Production size:	Small
Development status:	Producer
First production started:	1915
Last production ended:	1948

Geology

Host rock:	Longfellow Limestone;Coronado Quartzite;Pinal Schist
Host type:	Schist
Associated rock:	Andesite And Rhyolite Volcanics
Associated type:	Rhyolite
Structure:	Ne Trending Fault, Block Faulting With 500-600 Ft Downthrow On West Side Of Twig Mine Deposits
Tectonic:	Transition Zone Between Basin And Range And Colorado Plateau Provinces
Alteration processes:	Contact Alterration Of Precambrian Sediments To Metaquartzite Schist Host Rock

References

MRDS	M800164
DEP	10048132
Reference	{Deposit:: ABGMT-USBM FILE DATA.}{Deposit:: MOOLICK, R.T., AND DUREK, J.J., 1966, THE MORENCI DISTRICT, IN GEOLOGY OF THE PORPHYRY COPPER DEPOSITS, EDITED BY TITLEY AND HICKS.}{Deposit:: USGS PROFESSIONAL PAPER 43 (1905).}{Deposit:: ARIZONA DEPARTMENT OF MINERAL RESOURCES FILE DATA.}{Other Database:: CIMRI}
Reporter	Orris, Greta J., Calder, Susan R.