Arizona · Cochise County
Past Producer

Defiance Mine

Cochise County, Arizona, United States
LeadZincSilverCopperGoldSemiprecious GemstoneVanadium
⌖ Show on mapUSGS source ↗
Commodities
PrimaryLead, Zinc, Silver, Copper
SecondaryGold, Semiprecious Gemstone
TertiaryVanadium
Commodity typeB
Deposit
Deposit typeReplacement
Deposit sizeS
Orebody formIRREGULAR
Ore controlControl By Faults And Fractures In Limestone, Also Along Dike Perpendicular To Bedding
Materials
Ore mineralsAnglesite, Aurichalcite, Calamine, Cerargyrite, Malachite, Melaconite, Rosasite, Smithsonite, Wulfenite
GangueAragonite, Calcite, Hematite, Jarosite, Kaolin, Limonite
Geology
Host rockLimestone · Naco Group Limestone
Associated rockQuartz Monzonite · Sugarloaf Quartz Latite Porphyry;Gleeson Quartz Monzonite;Copper Bell Quartz Monzonite Porphyry
StructureIn Limestone Near Quartz Monzonite Contact, Limestone N30w, 40 To 50 Ne, Brecciated Fault Zones, N To Nnw Trending Gleeson Ridge Overthrust, Bedding Plane Faults
AlterationOxidized
Economic & production
Development statusPast Producer
Production years1900-1958
First production1900
Last production1958
Identification
Deposit ID10027116
MRDS IDM002139
Alternate namesPart of Costello Group, Silver Bell
RegionNA
Data scoreB
Coordinates31.74319, -109.82315
References
ARIZ. B. OF M. BULL. 123, 1927, PL. I, P. 75-77.KEITH, S.B., 1973, ARIZONA BUREAU OF MINES BULLETIN 187, P. 81.BLAIR, GERRY, 1992, THE ROCKHOUND'S GUIDE TO ARIZONA: HELENA, MONTANA, FALCON PRESS, 165 P.CIMRIKEITH, 1973, ARIZ. BUR. OF MINES BULL. 187.