Slide Rock-Silver Dollar Group

The Slide Rock-Silver Dollar Group is a silver, lead, and gold mine located in San Miguel county, Colorado at an elevation of 12,500 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

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Site Name

Primary: Slide Rock-Silver Dollar Group

Commodity

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

Location

State: Colorado
County: San Miguel
District: Mount Wilson District

Land Status

Land ownership: National Forest
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.
Administrative Organization: San Juan N. F.

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
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

Model Name: Polymetallic replacement

Orebody

Not available

Structure

Type: R
Description: Paradox Basin, San Miguel Mtns

Type: L
Description: Wilson Peak Stock

Alterations

Alteration Type: L
Alteration Text: Oxidation Of Pyrite To Fe Oxides (Gossan)

Rocks

Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene

Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Pliocene

Analytical Data

Analytical Data: CHEMICAL ANALYSIS, 6 PPM AU, 180 PPM AG, 2300 PPM CU, 14000 PPM PB, 96000 PPM ZN.
Analytical Data: BROMFIELD AND OTHERS' (1972) FIRE ASSAYS OF GRAB AND CHIP SAMPLES CONTAINED 0.01 TO 0.10 OZ/TON AU, TRACE TO 3.3 OZ/TON AG, TRACE TO 0.10% CU, 0.08 TO 9.76% PB, 0.10 TO 8.85% ZN. SEMIQUANTITATIVE SPECTROGRAPHIC ANALYSIS OF HIGH-GRADE VEIN SAMPLE FROM DUMP CONTAINED 10% FE, 0.02% MG, 0.07% CA, 0.03% TI, 500 PPM MN, 70 PPM AG, 10000 PPM AS, LT 10 PPM B, 100 PPM BA, LT 10 PPM BI, GT 500 PPM CD, 20 PPM CO, 5 PPM CR, 1000 PPM CU, LT 5 PPM MO, LT 5 PPM NI, GT 20000 PPM PB, 200 PPM SB, LT 10 PPM SN, LT 100 PPM SR, 20 PPM V, GT 10000 PPM ZN

Materials

Ore: Sphalerite
Ore: Gold
Ore: Pyrite
Gangue: Calcite
Gangue: Quartz

Comments

Comment (Deposit): ALONG NORTH SIDE OF WILSON PEAK STOCK, SEVERAL EAST-WEST- TO ENE-TRENDING FISSURES DIP STEEPLY NORTH AND SOUTH IN GRANODIORITE NEAR CONTACT WITH MICROGRANOGABBRO, RANGE TO 3 INCHES IN WIDTH ALTHOUGH ANASTOMOSING VEINLETS FORM 2- TO 3-FT-WIDE SHEETED ZONE IN PROSPECTS. STRONGEST VEIN IS 3- TO 6-FT-WIDE ALTERED, PYRITIZED FISSURE ZONE THAT MAY BE THE SE TERMINUS OF SYNOPSIS VEIN, CUTTING MICROGRANOGABBRO AND DYING OUT IN METAMORPHOSED MANCOS SHALE.

Comment (Workings): SURFACE PROSPECT PITS; SOME "GOPHERING" ALONG VEINS; 100-FT CROSSCUT WITH PERHAPS 80 FT OF DRIFTING, OTHER MINOR CROSSCUT AND STUB DRIFT.

Comment (Location): (LAND STATUS AND ADMINISTRATIVE AREA LOCATIONS CALCULATED USING GIS OVERLAY ANALYSIS FOR SAN JUAN N. F.). CLAIMS LIE IN UPPER BILK BASIN ALONG UNNAMED EAST-FLOWING TRIBUTARY TO BILK CREEK AROUND SMALL TARN AND 0.5 MILE SE OF WILSON PEAK. PROSPECTS LIE WEST AND NW OF TARN. ELEV AND LAT-LONG GIVEN ARE FOR PROSPECT ON STRONGEST VEIN 1200 FT NW OF TARN (E2 SW SEC. 33). ; INFO FROM LAND.ST :1975

Comment (Development): MINOR "GOPHERING" MAY HAVE TAKEN PLACE IN 1890S, YIELDING A FEW TONS OF HANDCOBBED ORE.

References

Reference (Deposit): BROMFIELD, C.S., AND OTHERS, 1972, MINERAL RESOURCES OF THE WILSON MOUNTAINS PRIMITIVE AREA, COLORADO: USGS BULL. 1353-A, P. 39, 48-49, 66-67.

Reference (Deposit): BROMFIELD, C.S., 1967, GEOLOGY OF THE MOUNT WILSON QUADRANGLE, WESTERN SAN JUAN MOUNTAINS, COLORADO: USGS BULL. 1227.

Colorado Mining Photos

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