Mine detail: Pioneer District

Previously called ''

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Location

Lat / long:

37.69279, -108.03065

Resource(B)

Primary:	Zinc, Silver, Lead, Copper
Secondary:	Sulfur-Pyrite, Gold, Sulfur, Sulfuric Acid, Cadmium
Tertiary:	Aluminum, Iron, Manganese
Ore:	Alunite
Gangue:	Alabandite, Allanite, Allophane, Andalusite, Aragonite, Barite, Calcite, Celestite, Chlorite, Clinozoisite, Cordierite, Diaspore, Dolomite, Epidote, Fluorite, Garnet, Helvite, Huebnerite, Jarosite, Kaolinite, Limonite, Magnetite, Molybdenite, Prehnite, Pyrolusite, Rhodochrosite, Rutile, Sericite, Serpentine, Siderite, Sphene, Tetradymite, Topaz, Tourmaline

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer

Geology

Associated type:	Monzonite,Hornblendite,Latite,Basalt,Lamprophyre,Granite
Structure:	Rico Dome, Calico Peak Anticline; Principal Named Faults: Alaskite, Blackhawk, Futurity, Hidden, Honduras, Knob Hill, Last Chance, Nellie Bly, Princeton, Sandstone Mountain, Silver Creek, Smelter, South Park, Spruce Gulch, 210 Drift, Yellow Jacket
Alteration processes:	Oxidation Of Pyrite Replacement To Au-Ag-Bearing Limonitic Iron Ore; Alteration Of Manganiferous Carbonates To Mn Oxides; Alteration Of Base-Metal Sulfides To Carbonates And Sulfates; Alteration Of Ag Minerals (Argentite) To Native Ag And Embolite (Cerargyrite And Bromyrite); Sericitization Of Feldspar In Porphyry And Arkosic Sandstone; Solfataric Alteration To Alunite At Calico Peak.

References

MRDS	D010797
DEP	10014148
Reference	MCKNIGHT, 1974, P. 6; HENDERSON, 1926, P. 117; USBM MINERAL YEARBOOKS 1969-1981; COLORADO DIVISION OF MINES ANNUAL OPERATOR REPTS.
Reporter	Schwochow, Stephen D.