Mouat Nickel-Copper Copper Prospect
The Mouat Nickel-Copper Copper Prospect is near Nye, Montana. Historically the site has been associated with the Stillwater Mining District which is now part of the Custer National Forest. The site was first discovered in 1883 by Jack Nye, Jimmy And Jonas Hedges. Preliminary development has taken place such as surface trenching, adits, shafts, drill holes, geophysics, geochemistry, or geological mapping. Enough data has been gathered to estimate grade and tonnage. The size of the deposit is estimated to be small. Mine operations consist of underground workings. There is one known shaft. Subsurface length extends a maximum of 2,438 meters (8,000 feet). The ore mined is composed of chalcopyrite, pentlandite and pyrrhotite with waste material consisting primarily of magnetite and plagioclase. The ore body has a lenticular or lens shaped form extending 274 meters (900 feet) long and 457 meters (1,500 feet) wide. The host rock in this area is quartz monzonite from the Lower Cretaceous epoch 145.00 to 100.50 million years ago. The Middle Rocky Mountains physiographic province of the Rocky Mountain System characterize the geomorphology of the surrounding area.
Site identification and general characteristics. Learn about USGS mines.
Additional textual information about a site or mine.
11 LARGE PODS, 24 SMALL PODS AND LENSES DISCOVERED. SIZE OF LARGEST POD: 420 FEET LONG, 218 FEET WIDE, 116 FEET THICK. NORITE SILLS DIP 30-40W, PARALLEL TO BASE OF COMPLEX. MINERALIZED AREA ROUGHLY 1, 200 FEET IN DIAMETER. INDIVIDUAL MASSES MEASURE AS MUCH AS 100 BY 30 FEET ON EXPOSED SURFACES. SULFIDES ARE MOST ABUNDANT IN HORNFELS; PYRRHOTITE IS MOST ABUNDANT SULFIDE. NICKEL AND COPPER CONTENT IS ERRATIC AND CANNOT BE ESTIMATED BY INSPECTION.
UNSURVEYED. IN CUSTER NATIONAL FOREST.
Formal or informal mining district names.
Workings at the site.
7 ADITS, INACCESSIBLE; MOUAT TUNNEL. 5, 981 FEET OF DRILL CORE FROM 8 HOLES DRILLED IN 1940-1941 (USBM ); 92, 041 FEET OF DRILL CORE FROM 95 HOLES DRILLED FROM 1967-1970 (ANACONDA ); 3, 898 FEET OF DRILL CORE FROM 13 HOLES DRILLED IN 1977 (ANACONDA).
Processes that concentrated or enriched the mineralization of the mine.
AGE OF STILLWATER COMPLEX IS 2, 705 +/-4 MA BASED ON U-LEAD SYSTEMATICS ON ZIRCON-BADDELEYITE (PREMO AND OTHERS, 1990 ); AGE OF HOST ROCKS: PRE CAMBRIAN; STILLWATER COMPLEX.
Characteristics of the ore body.
Geological materials at the site.
Geologic structural features affecting or characterizing the site or mine.
Tectonic setting in which the site or deposit is situated.
Physiographic area where the resource is found.
Mineralogical and chemical alteration at or near the site, which may help to indicate the geographic extent of the geological processes producing the mine.
Results of chemical or mineralogical analysis on materials at or near the site
Controls on emplacement of ore such as faults or other structural features.
PAGE AND OTHERS IN CZAMANSKE AND ZIENTEK ESTIMATED SEVERAL MILLION TONS AT 0. 4% NICKEL, 0. 35% COPPER.
Other deposits in the same region.
Mouat Nickel-Copper Nickel Prospect
Mountain View Cr-Pt Platinum Occurrence
Mouat Nickel-Copper Copper Occurrence
Mouat Chromium Mine
Mountain View Mine
Stillwater Pgm Mine
Nye Basin-Lip Chromium-Platinum Prospect
Nye Basin Nickel-Copper Lip Copper Occurrence
Dow Palladium Occurrence
Mouat Iron-Titanium Iron Occurrence
* Mine bounds on map indicate the general area that a mine occupies. For an detailed map, refer to the overseeing BLM field office.
** The mine central point is based on an average of the mine's bounding box(es) and does not necessarily fall on the claim itself.
1 World-class significance is determined by total endowment of the contained commodity. This includes all past production and remaining reserves. Each commodity is considered separately and commodities cannot be combined to arrive at a significant size. The tonnage thresholds are from the mine model grade-tonnage studies. As of June 2008, many entries were classified as significant under less strict rules.
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SEE PAGE (1979) FOR GENERAL DESCRIPTION OF BASAL SERIES MINERALIZATION.