Description
Jack Mansfield And Con Ryan
Commodities
PrimaryLead, Copper, Silver
SecondaryGold, Zinc
TertiaryManganese
Commodity typeM
Deposit
Deposit sizeS
WorkingsUnderground
Orebody formTABULAR
Ore controlParallel Ne-Trending Quartz Veins Cutting Quartz Monzonite And Along Contact Between Monzonite And Rhyolite
Materials
Ore mineralsBornite, Chalcopyrite, Galena, Pyrite, Sphalerite, Tetrahedrite
GangueBiotite, Hornblende, Quartz
Geology
Host rockQuartz Monzonite,Volcanic Breccia (Agglomerate),Quartz Latite,Plutonic Rock
Associated rockRhyolite,Dacite · Mount Wrightson Formation;Temporal Formation
StructureQuartz Monzonite Is Intruded And Overlain By Rhyolite, Dominant Structure In Monzonite Dips 35e; Rhyolite Traversed By A Coarse Sheeting Which Dips 60w
Tectonic settingMount Wrightson Fault Block
AlterationWall Rocks Are Strongly Altered; Rhyolite Altered To Quartz
Economic & production
Development statusProducer
First production1881
Last production1951
Discovery year1879
Identification
Deposit ID10046337
MRDS IDM241330
Alternate namesMansfield No. 1 and 2, Black Cap, Sweet, Ruby, Rupert, Lee
RegionNA
Data scoreB
Coordinates31.61707, -110.79985
References
ABGMT-USBM FILE DATAUSBM FILES, MANSFIELD MINE GROUPADMR FILE DATA, MANSFIELD MINEBLM DISTRICT MINING SHEET 687, 12) USGS PP 748, P. 14-15TENNEY, JAMES B., 1927-29, HISTORY OF MINING IN ARIZONA; ARIZONA BUREAU OF MINES, P. 317-318ROHRBACHER, ROBERT G. 1964, GEOLOGY OF THE TEMPORAL GULCH-MANSFIELD CANYON AREA SANTA CRUZ COUNTY ARIZONA; M.S. THESIS UNIVERSITY OF ARIZONA, P. 69USGS BULL 582, P. 226-229ARIZ BUR MINES BULL 191, P. 90, 11) USGS MAP I-614ABGMT FILES, STANTON B. KEITHABGMT CLIPPINGS FILE; MANSFIELD MINING AND SMELTING CO., RUPERT GROUP