Molly Group

The Molly Group is a molybdenum mine located in Delta county, Colorado at an elevation of 9,160 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: Molly Group
Secondary: Movelock Mine ?

Commodity

Primary: Molybdenum

Location

State: Colorado
County: Delta
District: Grand Mesa Area

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.

Holdings

Not available

Workings

Not available

Ownership

Owner Name: Charles Horn

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Colorado Plateaus
Physiographic Section: Uinta Basin

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Type: R
Description: Piceance Basin, Gunnison Uplift, West Elk Centers

Type: L
Description: Piceance Basin, Grand Hogback Monocline

Alterations

Not available

Rocks

Name: Basalt
Role: Associated
Age Type: Associated Rock Unit
Age Young: Pliocene

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

Analytical Data

Not available

Materials

Ore: Molybdenite

Comments

Comment (Location): EXACT LOCATION UNKNOWN WITHIN UNSURVEYED SECTION 7. LAT-LONG AND ELEV GIVEN ARE FOR CENTER OF PROJECTED SEC. 7 ; INFO FROM LAND.ST :(1974)

Comment (Development): SITE WAS INVESTIGATED BY USBM AS POTENTIAL DOMESTIC SOURCE OF MO AS A RESULT OF STRATEGIC MINERALS ACT AND WW II DEFENSE NEEDS.

Comment (Deposit): EXACT NATURE OF DEPOSIT IS UNKNOWN BUT MOST LIKELY THE MINERALIZATION IS ASSOCIATED WITH VERTICAL EAST-WEST-TRENDING BASALT DIKE INTRUDING WASATCH FM. YEEND (1969) BELIEVES THE DIKE IS A FEEDER DIKE EQUIVALENT TO BASALT FLOWS ON GRAND AND BATTLEMENT MESAS. YEEND CITES K-AR DATE BY J.R. DONNELL OF 9.7 0.485 MY BP (PLIOCENE) FOR AGE OF FLOWS.

References

Reference (Deposit): TRAVER, W.M., JR., 1947, INVESTIGATIONS OF STRATEGIC MINERAL RESOURCES, IN VANDERWILT, J.W., MINERAL RESOURCES OF COLORADO: COLORADO STATE MINERAL RESOURCES BOARD, P. 474, 484.

Reference (Deposit): YEEND, W.E., 1969, QUATERNARY GEOLOGY OF THE GRAND AND BATTLEMENT MESAS AREA, COLORADO: USGS PROF. PAPER 617, 50 P.

Reference (Deposit): TWETO, OGDEN, AND OTHERS, 1978, GEOLOGIC MAP OF THE LEADVILLE 1X2 QUADRANGLE, NORTHWESTERN COLORADO: USGS MAP I-999

Colorado Mining Photos

Check out this collection of Colorado's best historic mining photos: Incredible Photos of Colorado Mining Scenes.