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Moffat Gulch

Producer in Granite county in Montana, United States with commodities Gemstone, Corundum
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Host and associated rocks
  7. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Mining district
  10. Ownership information
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10023844
MRDS ID I005001
Record type Site
Current site name Moffat Gulch

Geographic coordinates

Geographic coordinates: -113.61065, 46.24989 (WGS84)
Location accuracy 1000(meters)

Site location context

Political divisions (FIPS codes)

Granite(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Maukey Gulch(quadrangle 1:24,000 scale)

Philipsburg(quadrangle 1:100,000 scale)

Butte(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Flint-Rock(hydrologic unit)

Pend Oreille(hydrologic accounting unit)

Kootenai-Pend Oreille-Spokane(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Beaverhead-Deerlodge 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 Granite

Commodities

Commodity Importance
Gemstone Primary
Corundum Primary

Comments on the commodity information

  • MOST OF THE SAPPHIRES ARE NATURALLY PALE, BUT CAN BE HEAT TREATED TO ACHIEVE A DEEPER BLUE COLOR.

Analytical data

Result AVERAGE GRADE OF SAMPLES COLLECTED IN A 74 ACRE TEST AREA RAN 21.59 CARATS PER CUBIC YARD WITH AN AVERAGE DEPTH TO BEDROCK OF 8 FT.

Host and associated rocks

  • Host or associated Host
    Rock type Unconsolidated Deposit > Alluvium
    Stratigraphic age (youngest) Holocene

Nearby scientific data

(1) -113.61065, 46.24989
ListMap

Economic information

Economic information about the deposit and operations

Development status Producer
Commodity type Non-metallic
Deposit size Small
Significant No

Mining district

District name Rock Creek District

Ownership information

  • Type Owner
    Owner American Gem
    First year 1994

Reference information

Bibliographic references

  • Deposit

    THE NORTHERN MINER, 1994, AMERICAN GEM PRODUCING SAPPHIRES IN MONTANA: V. 80, NO. 30, P. 1, 10, 11

  • Reserve-Resource

    THE NORTHERN MINER, 1994.

General comments

Subject category Comment text
Deposit DURING 1992-1994, AMERICAN GEM GAINED CONTROL OF MOST OF THE HISTORIC SAPPHIRE PRODUCING AREAS IN MONTANA.

Reporter information

Type Date Name Affiliation Comment
Reporter 14-DEC-94 Orris, Greta J. U.S. Geological Survey

Beyond USGS

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

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