Treasure Hill Spar Claim

The Treasure Hill Spar Claim is a silver, gold, and copper mine located in Hinsdale county, Colorado at an elevation of 10,942 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: Treasure Hill Spar Claim
Secondary: Patented Claims: Treasure Hill Spar
Secondary: Ms 1085

Commodity

Primary: Silver
Primary: Gold
Primary: Copper
Secondary: Lead
Tertiary: Antimony

Location

State: Colorado
County: Hinsdale
District: Galena (Henson 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

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Deposit Type: Vein
Operation Type: Unknown
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: San Juan Volcanic Field, San Juan Depression

Type: L
Description: San Juan-Uncompahgre Calderas, Lake City Caldera, Eureka Graben

Alterations

Not available

Rocks

Name: Rhyolite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Oligocene

Name: Rhyolite
Role: Associated
Age Type: Host Rock Unit
Age Young: Oligocene

Name: Rhyolite
Role: Associated
Age Type: Associated Rock
Age Young: Oligocene

Name: Rhyolite
Role: Associated
Age Type: Host Rock
Age Young: Oligocene

Analytical Data

Analytical Data: STEVEN AND OTHERS' (1977) SEMIQUANTITATIVE SPECTROGRAPHIC ANALYSES. SEVEN CHIP AND SPECIMEN SAMPLES FROM VEIN AND TRENCH FLOOR CONTAINED 0.2 TO 5% AL, GT 4% CA, 0.2 TO 1.0% FE, 0.1 TO 0.2% MG, 0.2 TO 0.4% MN, 0.003 TO 0.1% TI, 30 TO 60 PPM CR, LT 20 TO 40 PPM CU, LT 100 TO 100 PPM PB, LT 70 PPM ZR, TRACE AU, 0.01 OZ/TON AG. GRAB SAMPLE FROM PIT SOUTH OF CLAIM CONTAINED GT 7% AL, 0.5% CA, 4% FE, 0.8% MG, 0.2% MN, 0.2% TI, 1000 PPM BA, 200 PPM CR, 80 PPM CU, 100 PPM PB, 70 PPM ZR, CHIP SAMPLE FROM VEIN IN PIT WEST OF CLAIM CONTAINED GT 7% AL, 0.3% CA, 4% FE, 0.8% MG, 0.2% MN, 0.2% TI, 100 PPM B, 1000 PPM BA, 200 PPM CR, 3000 PPM CU, 1500 PPM PB, 0.07% SB, 70 PPM ZR, 0.9 OZ/TON AG (FIRE ASSAY), 0.20% CU AND 0.04% PB (ATOMIC ABSORPTION).

Materials

Ore: Galena
Gangue: Calcite
Gangue: Quartz
Gangue: Sericite

Comments

Comment (Deposit): BETWEEN RIMS OF UNCOMPAHGRE AND LAKE CITY CALDERAS, DEPOSIT LIES IN INFILL SEQUENCE COMPOSED OF EUREKA MEMBER RHYOLITE OVERLYING AND PROBABLY INTERBEDDED WITH CALDERA COLLAPSE BRECCIA, CONSISTING OF CHAOTIC MASSES OF PRECALDERA INTERMEDIATE-COMPOSITION ROCKS INTERPRETED TO BE REULT OF SLUMPING FROM OVERSTEEPENED CALDERA WALLS DURING INITIAL SUBSIDENCE. DEPOSIT APPEARS TO BE TRANSVERSE VEIN LOCATED IN SLACK'S (1980) QUARTZ/BASE-METAL ASSEMBLAGE, OUTER CARBONATE-TETRAHEDRITE ZONE AND IS CHARACTERIZED BY MASSIVE ORE-STAGE CARBONATE--CALCITE IN CONTRAST TO RHODOCHROSITE COMMON AT MINES IN INNER ZONES.

Comment (Location): CLAIM LIES ABOVE UNNAMED TRIBUTARY OF NELLIE CREEK ABOUT ONE MILE ABOVE CONFLUENCE WITH HENSON CREEK. ELEV AND LAT-LONG GIVEN ARE FOR OPEN CUT SHOWN ON STEVEN AND OTHERS (1977) MAP. ; INFO FROM LAND.ST :1977

Comment (Workings): EXPLORATORY TRENCH AND OPEN CUTS.

References

Reference (Deposit): IRVING, J.D., AND BANCROFT, HOWLAND, 1911, GEOLOGY AND ORE DEPOSITS NEAR LAKE CITY, COLORADO: USGS BULL, 478.

Reference (Deposit): SLACK, J.F., 1980, MULTISTAGE VEIN ORES OF THE LAKE CITY DISTRICT, WESTERN SAN MOUNTAINS, COLORADO: ECON. GEOLOGY, V. 75, NO. 7, P. 963-991.

Reference (Deposit): LIPMAN, P.W., 1976, GEOLOGIC MAP OF THE LAKE CITY CALDERA AREA, WESTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-962.

Reference (Deposit): STEVEN, T.A., AND OTHERS, 1977, MINERAL RESOURCES OF STUDY AREAS CONTIGUOUS TO THE UNCOMPAHGRE PRIMITIVE AREA, SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS BULL. 1391-C, P. 84-85, 110-111.

Reference (Deposit): BLM MINERAL SURVEY MS 1085

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