Iron Mountain Nickel-Copper Camp Nickel Occurrence
The Iron Mountain Nickel-Copper Camp Nickel Occurrence is near Limestone, Montana. Historically the site has been associated with the Stillwater Mining District which is now part of the Gallatin National Forest. Ore mineralization has been found at this location and the size of the deposit is estimated to be small, however the precise grade, tonnage, and extent of the mineralization are not known. There has been no production and little to no activity other than routine claim maintenance since the mineral discovery. The ore mined is composed of chalcopyrite, pyrrhotite and pentlandite with waste material consisting primarily of plagioclase and magnetite. The ore body is described as tabular shaped reaching 2,413 meters (7,919 feet) in length. The mineralization at this location is from the Neoarchean era 2.80 to 2.50 billion 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.
DEPOSIT CONSISTS OF LENTICULAR TO TABULAR SHAPED DISSEMINATED, MATRIX, AND MASSIVE CONCENTRATIONS OF MAGMATIC SULFIDE MINERALS NEAR THE MARGIN OF MAFIC AND ULTRAMAFIC INTRUSIONS OF THE STILLWATER COMPLEX. MINERALIZATION OCCURS FOR AT LEAST 1. 5 MI ON STRIKE NEAR THE BASE OF THE COMPLEX; RESOURCE CALCULATIONS ARE BASED ON A SEGMENT APPROXIMATELY 2400 FEET LONG. THIS RECORD ENCOMPASES MINERALIZED PERIDOTITE ZONE AND BASAL SERIES THAT ARE SOUTHWEST AND SOUTH OF IRON MOUNTAIN (PAGE AND NOKLEBERG, 1974 ); SEE DRILL PATTERN ILLUSTRATED IN ZIENTEK (1993).
IN GALLATIN NATIONAL FOREST. UNSURVEYED.
Formal or informal mining district names.
AREA IS PART OF AMAX'S LI CLAIM GROUP, WHICH WAS STAKED IN 1968-1969. AMAX (1968-1979 ); MANVILLE AND LATER STILLWATER PGM RESOURCES LEASED CLAIMS FROM AMAX AND HELD THEM UNTIL 1993. AMAX'S EXPLORATION OF THE STILLWATER AREA BEGAN IN THE SUMMER OF 1967 WITH AN ORIENTATION GEOCHEMICAL RECONNAISSANCE SURVEY FOLLOWED IN THE FALL BY A LOW-ALTITUDE HELICOPTER MAGNETICS SURVEY. IN JUNE 1968, AN INTENSIVE HELICOPTER-SUPPORTED GEOCHEMICAL STREAM-SEDIEMNT SAMPLING PROGRAM WAS CONDUCTED IN THAT PART OF THE EAST BOULDER PLATEAU NOT ALREADY CLAIMED BY ANACONDA OR FREEPORT, WHICH WAS SOON FOLLOWED BY CLAIM STAKING (J. F. MCKNIGHT, WRITTEN COMMUN ., 1969 ). AMAX CONDUCTED AN EXTENSIVE EXPLORATION PROGRAM INCLUDING MAPPING, GROUND-BASED GEOPHYSICAL SURVEYS (IP AND MAGNETICS ), GEOCHEMICAL SAMPLING, TRENCHING, AND DRILLING. DRILL TARGETS INCLUDED BOTH GEOPHYSICAL ANOMALIES (PRINCIPALLY IP) AND GEOCHEMICAL ANOMALIES; C AREAS WITH COPPER >200 PPM IN SOILS ARE ILLUSTRATED IN ZINETEK (1993) 18, 688 FEET OF.
CORE WAS OBTAINED FROM 45 HOLES, DRILLED DURING 1969-1975.
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).
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.
DRILL INDICATED RESERVES ARE BASED ON INTERCEPTS IN 9 DRILL HOLES. ADDITIONAL INFORMATION ABOUT CALCULATION METHOD GIVEN IN ZIENTEK (1993).
Other deposits in the same region.
Iron Mountain-Camp Nickel-Copper Deposit
Iron Mountain Chrome Chromium Occurrence
Iron Mountain Nickel-Copper Iron Creek Nickel Occurrence
Janet Copper Occurrence
Iron Creek Nickel Prospect
Monkey East Camp Zone Palladium Occurrence
Monkey West Platinum Occurrence
Forge Nickel-Copper Nickel Occurrence
East Boulder River Chromium Occurrence
Coors Palladium 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.
Learn more about the Bureau of Land Management, Public Land Survey System, and mining claims.
Understanding Claim Ownership
We receive lots of emails from people who find their name or a relative’s name on our site and want to know if this means they have some right to the land listed under that name.
Understanding BLM Administrative Areas
Whether it is filing a mine or researching one, the administering BLM office is going to be the definitive source.
Understanding Location Data
Mine handled by the Bureau of Land Management are not mapped by latitude and longitude, instead, these mines harken back to the Public Land Survey System.
A “township” can refer to two different things. Both are part of the PLSS measurement system but have different uses.
Join our mailing list to get alerts for mine listing updates, new features, and special opportunities.
Search for owners by first name, last name, company, location, etc.
Browse mine owners by name
Browse mine owners by location
Browse mine owners by state in the United States of America
Browse owners by category (corporation, agency, private)
Browse owners by interest relationship (partner, holder, agent, etc.)
NO SITE-SPECIFIC MINERALOGICAL STUDIES HAVE BEEN MADE FOR THIS PROSPECT. SEE PAGE (1979) FOR GENERAL DESCRIPTION OF BASAL SERIES MINERALIZATION. ONLY NICKEL AND COPPER CONTENTS WERE DETERMINED FOR DRILL CORE BY AMAX. PGM AND CO DATA WERE NOT SYSTEMATICALLY ACQUIRED BY AMAX FOR MINERALIED DRILL CORE. SELECT SAMPLES WERE REANALYZED FOR PGM BY THE USGS; SUMMARY OF RESULTS ON PULPS ARE GIVEN IN ZIENTEK (1993).