Old Lot Mine

The Old Lot Mine is a gold and silver mine located in Gunnison county, Colorado at an elevation of 8,799 feet.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Old Lot Mine
Secondary: Lot Mine
Secondary: Patented Claim: Old Lot, MS 10592
Secondary: Unpatented Claims: Gold Bank
Secondary: Old Lot No. 1
Secondary: Gold Pick
Secondary: Spotter
Secondary: Steep Dipper
Secondary: Lucky Day

Commodity

Primary: Gold
Primary: Silver
Tertiary: Zinc
Tertiary: Copper
Tertiary: Lead

Location

State: Colorado
County: Gunnison
District: Goose Creek District

Land Status

Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.

Holdings

Not available

Workings

Type: Surface/Underground

Ownership

Owner Name: John Peterson
Home Office: Delta, Co.
Years: 1954 -

Production

Year: 1934
Description: Ap_Grade: ^0.616 Oz/Ton Au (Crude Ore)
Year: 1931
Description: Ap_Grade: ^30 Oz/Ton Au, 30 Oz/Ton Ag

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year Last Production: 1934
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Type: R
Description: Gunnison Uplift, San Juan Volcanic Field

Type: L
Description: Gunnison Gold Belt, Iron Hill Alkalic Complex, Tolvar Peak Stock

Alterations

Not available

Rocks

Name: Syenite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic

Name: Syenite
Role: Associated
Age Type: Host Rock Unit
Age Young: Neoproterozoic

Name: Syenite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Neoproterozoic

Name: Syenite
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic

Analytical Data

Not available

Materials

Ore: Chalcopyrite
Ore: Sphalerite
Ore: Galena
Ore: Pyrite
Gangue: Limonite
Gangue: Magnetite
Gangue: Quartz
Gangue: Epidote
Gangue: Garnet
Gangue: Calcite

Comments

Comment (Commodity): METALS AND ORE MINERALS LISTED ABOVE ARE GENERAL OCCURRENCES REPORTED FOR AREA; ALL MAY NOT NECESSARILY OCCUR AT THIS SITE.

Comment (Location): ON NORTH SIDE OF MILKRANCH GULCH BASIN 0.2 MILE EAST OF COLORADO RTE 149. ELEV AND LAT-LONG GIVEN ARE FOR SHAFT AT SW CORNER OF SEC. 15. ; INFO FROM LAND.ST :1976

Comment (Production): PARTIAL PRODUCTION RECORD. FIGURES UNKNOWN FOR YEARS PRIOR TO 1931.NO PRODUCTION REPORTED IN 1933, 1938, AND 1954. NO REPORTS FOR OTHER INTERVENING YEARS.

Comment (Development): MINE HISTORY BEFORE 1900 UNKNOWN. MILLING ORE AND CONCENTRATES PRODUCED IN 1931, CRUDE ORE IN 1934.

Comment (Deposit): MINE DEVELOPED NEAR CONTACT BETWEEN DUBOIS GREENSTONE (FELSITE UNIT) AND SMALL BIOTITE SYENITE INTRUSION. FOLIATION IN FELSITE TRENDS GENERALLY N 50 TO 60 E, 75 TO 80 NW. FOLIATION WITHIN SYENITE BODY TRENDS GENERALLY N 33 TO 50 E, 75 TO 90 NW. EXACT TYPE OF DEPOSIT IS UNCERTAIN BUT MAY BE SIMILAR TO STRATABOUND MASSIVE SULFIDES FOUND IN MINES TO THE NORTH. ALTHOUGH ORE MINERALS NOT ENTIRELY KNOWN, BURBANK MENTIONS OCCURRENCE OF PYRITE, CHALCOPYRITE, AU IN QUARTZ GANGUE IN GOLD-QUARTZ-TYPE DEPOSIT, POSSIBLY VEINLIKE.

Comment (Workings): 20-FT VERTICAL SHAFT; 325-FT INCLINED SHAFT WITH EAST DRIFTS AT 75 AND 100 FT; 150-FT CROSSCUT TUNNEL WITH 60-FT RAISE.

Comment (Deposit): BLM CLAIM RECORDS ORIGINALLY ASSIGNED DISTRICT NAME OF "WHITE EARTH" TO THIS CLAIM, BUT BASED ON PROBABLE SIMILARITY TO OTHER GREENSTONE BELT MINES, IT IS INCLUDED IN GOOSE CREEK DISTRICT. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

References

Reference (Production): COLORADO DIV. MINES ANN. OPERATOR REPTS.

Reference (Deposit): HUNTER, J.F., 1925, PRE-CAMBRIAN ROCKS OF GUNNISON RIVER, COLORADO: USGS BULL. 777, P. 70-71.

Reference (Deposit): BLM MINERAL SURVEY MS 10592

Reference (Deposit): BURBANK, W.S., 1951, AEC PRELIM. RECON. REPT. 1929

Reference (Deposit): COLORADO DIV. MINES INF. REPTS. AND ANNUAL OPERATOR REPTS.

Reference (Deposit): HEDLUND, D.C., AND OLSON, J.C., 1975, GEOLOGIC MAP OF THE POWDERHORN QUADRANGLE, GUNNISON AND SAGUACHE COUNTIES, COLORADO: USGS MAP GQ-1178.

Colorado Mining Photos

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