California · Inyo County
Past Producer

Widow No. 7

Inyo County, California, United States
Boron-Borates
⌖ Show on mapUSGS source ↗
Commodities
PrimaryBoron-Borates
Commodity typeN
Deposit
Model260: Lacustrine borates
Deposit sizeY
Orebody formWEDGE
Materials
Ore mineralsColemanite, Ulexite
GangueCalcite
Geology
Host rockShale,Limestone · Furnace Creek Formation
Economic & production
Development statusPast Producer
First production1915
Identification
Deposit ID10023430
MRDS IDI000390
Alternate namesOld Widow
RegionNA
Data scoreC
Coordinates36.29637, -116.66588
References
EVANS, J.R., TAYLOR, G.C., AND RAPP, J.S., 1976, MINES AND MINERAL DEPOSITS IN DEATH VALLEY NATIONAL MONUMENT, CALIFORNIA: CALIFORNIA DIVISION OF MINES AND GEOLOGY SPECIAL REPORT 125, 61 PCIMRIEVANS AND OTHERS, 1976.