Iron Mountain-Chrome Group E

Occurrence in Sweet Grass county in Montana, United States with commodities Chromium, PGE

Sections on this page

Identification information
Geographic coordinates
Site location context
Geographic areas
Commodities
Mineral occurrence model information
Nearby scientific data
Geologic structures
Economic information about the deposit and operations
Mining district
Land status
Links to other databases
Bibliographic references
Reporter information

Geologic information

Identification information

Deposit ID	10093108
MRDS ID	SP01100
Record type	Site
Current site name	Iron Mountain-Chrome Group E

Geographic coordinates

Geographic coordinates:	-110.03413, 45.39686 (WGS84)
Elevation	2835
Location accuracy	100(meters)
Relative position	ABOUT 2 MI SOUTH-SOUTHEAST OF SOUTH PICKET PIN LAKE, Acc Generalized Location, On Chrome D Claim, Near Survey Point "Carl"

Site location context

Political divisions (FIPS codes)

Sweet Grass(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Picket Pin Mountain(quadrangle 1:24,000 scale)

Gardiner(quadrangle 1:100,000 scale)

Bozeman(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Stillwater(hydrologic unit)

Upper Yellowstone(hydrologic accounting unit)

Upper Yellowstone(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Custer Gallatin National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country	State	County
United States	Montana	Sweet Grass

Comments on the location information

IN CUSTER NATIONAL FOREST. UNSURVEYED

Commodities

Commodity	Importance
Chromium Critical	Primary
PGE Critical	Secondary

Comments on the commodity information

NO PUBLISHED PGE DATA AVAILABLE FOR THIS AREA

Mineral occurrence model information

Model code	2
USGS model code	2a
Deposit model name	Bushveld Cr

Nearby scientific data

(1)	-110.03413, 45.39686	ListMap

Economic information

Geologic structures

Type of structure	Regional
Structure description	The Stillwater Complex Is Exposed Along The Northern Margin Of The Beartooth Uplift, One Of Several Laramide Basement-Cored Ranges That Make Up The Rocky Mountain Foreland Of South-Central Montana (Foose And Others, 1961: Kulik And Schmidt, 1988)

Comments on the geologic information

AGE OF STILLWATER COMPLEX IS 2,705 +/- 4 MA BASED ON U-PB SYSTEMATICS ON ZIRCON-BADDELEYITE (PREMO AND OTHERS, 1990)

Economic information about the deposit and operations

Development status	Occurrence
Commodity type	Metallic
Significant	No

Mining district

District name	In Stillwater Complex

Land status

Ownership category	National Forest

Reference information

Links to other databases

Agency	Database name	Acronym	Record ID	Notes
USGS	Mineral Resources Data System	MRDS	SP01100

Bibliographic references

Deposit

ZIENTEK, M.L., 1993, MINERAL RESOURCE APPRAISAL FOR LOCATABLE MINERALS: THE STILLWATER COMPLEX, IN HAMMARSTROM, J.M., ZIENTEK, M.L., AND ELLIOTT, J.E., EDS., MINERAL RESOURCE ASSESSMENT OF THE ABSAROKA-BEARTOOTH STUDY AREA, CUSTER AND GALLATIN NATIONAL FORESTS, MONTANA: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 93-207, P. F1-F83.
Deposit

PREMO, W.R., HELZ, R.T., ZIENTEK, M.L., AND LANGSTON, R.B., 1990, U-PB AND SM-ND AGES FOR THE STILLWATER COMPLEX AND ITS ASSOCIATED SILLS AND DIKES, BEARTOOTH MOUNTAINS, MONTANA: IDENTIFICATION OF A PARENT MAGMA?: GEOLOGY, V. 18, P. 1065-1068.

Reporter information

Type	Date	Name	Affiliation	Comment
Reporter	01-AUG-93	Peterson, Jocelyn A.	U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.