Location: | Cascade County, Montana, United States, North America |
Lat / long: | 46.94908, -110.70556 |
dep_id: | 10071381 |
mrds_id: | W014726 |
Commodity type: | metallic |
Major mineral: | Silver, Gold |
Minor mineral: | Copper, Lead |
Trace mineral: | Molybdenum, Zinc |
Operation type: | Unknown |
Deposit type: | Polymetallic veins |
Production size: | Production occurred |
Development status: | Past Producer |
ore: | Chalcopyrite, Freibergite, Galena, Molybdenite, Proustite, Pyrite, Sphalerite |
orebody_fm: | TABULAR |
work_type: | Underground |
model: | 85: Polymetallic veins |
alteration: | Sericitization & Silicification |
ore_ctrl: | Northeast-Trending Fractures, Snow Creek Porphyry; Vein Narrow In Pinto Diorite, Wider And Richer In Gneiss |
Reporter: | Mlynarczyk, Meg S. |
hrock_unit: | Belt, Neihart Quartzite;Gneiss And Schist |
hrock_type: | Diorite,Quartzite,Gneiss,Rhyolite |
arock_unit: | Snow Creek Porphyry-Pluton And Dikes Of Rhyolite Porphyry;Pinto Diorite-Large Phenocrysts Of Feldspar & Hornblende |
arock_type: | Diorite,Rhyolite |
Structure: | Zone Of Igneous Intrusions Covering Over 800 Square Km., Domal Uplift Caused By Intrusion Of Snow Creek Porphyry, Northeast-Trending Fractures And Faults |
tectonic: | Rocky Mountain Foreland |
disc_yr: | 1892 |
discr: | Big Seven Mining Co. |
References: |
- Deposit:: ROBERTSON, A. F., 1951, MINES & MINERAL DEPOSITS - CASCADE COUNTY, MONTANA, U.S. BUREAU MINES INF. CIRC. 7589.
- Deposit:: SCHAFER, P. A., 1935, GEOLOGY AND ORE DEPOSITS - NEIHART MINING DISTRICT, CASCADE CO., MONTANA, MT BUREAU OF MINES & GEOLOGY MEM. 13
- Deposit:: KLEINKOPF, M. D., WITKIND, I. J., AND KEEFER, W. R., 1972, AEROMAGNETIC, BOUGUER GRAVITY, AND GENERLIZED GEOLOGIC MAPS OF THE CENTRAL PART OF THE LITTLE BELT MOUNTAINS, MONTANA: U.S. GEOLOGICAL SURVEY MAP GP-837
- Geology:: WEED, W.H., 1900, THE GEOLOGY OF THE LITTLE BELT MOOUNTAINS, MONTANA: U.S. GEOLOGICAL SURVEY TWENTIETH ANNUAL REPORT, PART 3, P. 437-439.
- Production:: ROBERTSON, 1951, U.S.B.M. INF. CIRC. 7589
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