Mine detail: Terrible Mine

Previously called 'Ilse Lead Mine'

<< Back to the map

<< Back to browsing

Location: Custer County, Colorado, United States, North America
Lat / long: 38.21862, -105.24724
dep_id: 10012903
mrds_id: D008909
Commodity type: metallic
Major mineral: Lead
Minor mineral: Silver, Gold
Operation type: Surface-Underground
Production size: Small ammount of material produced
Development status: Past Producer
ore: Phosgenite, Cerussite
gangue: Calcite, Chalcedony, Chert, Limonite, Manganese Ox-Hydrous
orebody_fm: LENS
work_type: Surface/Underground
model: 30: Thorium-rare-earth veins
alteration: Extensive Oxidation, Iron Staining
conc_proc: Supergene?
ore_ctrl: Fault/Shear Zones; Ilse Fault
Reporter: Collins, Donna B., Spanksi, Gregory T.
hrock_unit: Undivided Gneiss
hrock_type: Gneiss
arock_unit: Syenite Dike;Diorite Dike
arock_type: Syenite,Diorite
Structure: Wet Mountains, Ilse Fault; Mine Near Intersection Of Ilse And Another Nw-Trending Fault
tectonic: Central Cordillera, Southern Rocky Mountains
Year first produced: 1884
yr_lst_prd: 1943
disc_yr: 1879
discr: Mr. Rain; Located Originally By Rain And Spaulding
References:
  • Deposit:: HUNTER, J.F., 1915, SOME CERUSITE DEPOSITS IN CUSTER COUNTY, COLORADO, IN CONTRIBUTIONS TO ECONOMIC GEOLOGY: USGS BULLETIN 580, P. 25-37
  • Deposit:: ECKEL, E.B., 1961, MINERALS OF COLORADO, A 100-YEAR RECORD: USGS BULLETIN 1114, P. 96
  • Deposit:: VANDERWILT, J.W., 1947, MINERAL RESOURCES OF COLORADO: COLORADO MINERAL RESOURCES BOARD, P. 69
  • Deposit:: SCOTT, G.R., TAYLOR, R.B., EPIS, R.C. AND WOBUS, R.A., 1978, GEOLOGIC MAP OF THE PUEBLO 1 DEGREE X 2 DEGREE QUADRANGLE, SOUTH-CENTRAL COLORADO: USGS MAP I-1022, 1:250,000
  • Deposit:: COLORADO DIVISION OF MINES, 1982, INSPECTION RECORDS 1921-1942.
  • Production:: VANDERWILT, 1947; COLORADO DIVISION MINES, 1982;
  • Reserve-Resource:: COLORADO DIVISION MINES, INSPECTION RECORDS.
© 2010-2018 Lee C. Baker unless noted. All rights reserved.