Minerva J Mine

The Minerva J Mine is a beryllium mine located in Park county, Colorado at an elevation of 8,560 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: Minerva J Mine

Commodity

Primary: Beryllium
Secondary: Molybdenum
Secondary: Tungsten
Secondary: Uranium
Tertiary: Lead
Tertiary: Zinc
Tertiary: Arsenic
Tertiary: Tin
Tertiary: Iron
Tertiary: Copper

Location

State: Colorado
County: Park
District: Lake George (Badger Flats) Beryllium Area (Mountain Dale 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.

Holdings

Not available

Workings

Type: Surface/Underground

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 1955
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

Form: CUPOLAS, PODS, IRREGULAR LENSES

Form: CUPOLAS, PODS, IRREGULAR LENSES

Structure

Type: R
Description: Tarryall Mountains, Front Range, Puma Hills, Badger Flats

Type: L
Description: Badger Flats Fault, Minor Faults, Round Mountain Syncline

Alterations

Alteration Type: L
Alteration Text: Greisenization

Rocks

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

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

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

Analytical Data

Analytical Data: SAMPLES TAKEN IN 1959-1969 SHOWED 300 PPM BE, 15 PPM CU, 30 PPM MO, 70 PPM PB, 70 PPM SN, 70 PPM ZN
Analytical Data: MASSES OF GALENA CONTAIN 0.3-0.7 % AG, 0.3-1.5 % BI, 0.007-0.7 % CU

Materials

Ore: Wolframite
Ore: Uraninite
Ore: Chalcopyrite
Ore: Pyrite
Ore: Sphalerite
Ore: Galena
Ore: Euclase
Ore: Cassiterite
Ore: Molybdenite
Ore: Covellite
Gangue: Siderite
Gangue: Muscovite
Gangue: Quartz
Gangue: Topaz
Gangue: Fluorite

Comments

Comment (Location): REDSKIN GULCH AREA ; INFO FROM LAND.ST :(1976)

Comment (Deposit): THE REDSKIN STOCK IS ZONED, WITH NEARLY ALL OF THE BERYLLIUM DEPOSITS OCCURRING IN THE GRANITE-APLITE OR PORPHYRITIC GRANITE FACIES OF THE GREISENIZED REDSKIN GRANITE. EVEN THOSE DEPOSITS NOT ACTUALLY IN THE REDSKIN GRANITE ARE SPATIALLY AND GENETICALLY RELATED TO IT.

Comment (Workings): ADITS, SHAFTS, OPEN CUTS

Comment (Commodity): NONPEGMATITIC BERYLLIUM DEPOSITS; BERYL OCCURS AS HEXAGONAL CRYSTALS AND MASSIVE POIKILOBLASTIC GRAINS.

References

Reference (Deposit): HAWLEY, C.C., 1969, GEOLOGY AND BERYLLIUM DEPOSITS OF THE LAKE GEORGE (OR BADGER FLATS) BERYLLIUM AREA, PARK AND JEFFERSON COUNTIES, COLORADO: USGS PROFESSIONAL PAPER 608-A, 44 P.

Reference (Deposit): MEEVES, H.C., 1966, NONPEGMATITIC BERYLLIUM OCCURRENCES IN ARIZONA, COLORADO, NEW MEXICO, UTAH, AND FOUR ADJACENT STATES: USBM REPORT OF INVESTIGATIONS 6828, P. 25-34.

Reference (Deposit): HAWLEY, C.C. AND GRIFFITTS, W.R., 1968, DISTRIBUTION OF BERYLLIUM, TIN, AND TUNGSTEN IN THE LAKE GEORGE AREA, COLORADO: USGS CIRCULAR 597, 18 P.

Reference (Deposit): HAWLEY, C.C. AND WOBUS, R.A., 1977, GENERAL GEOLOGY AND PETROLOGY OF THE PRECAMBRIAN CRYSTALLINE ROCKS, PARK AND JEFFERSON COUNTIES, COLORADO: USGS PROFESSIONAL PAPER 608-B, 77 P. & &

Reference (Deposit): SIEMS, P.L., 1963, BERYLLIUM: COLORADO SCHOOL OF MINES MINERAL INDUSTRIES BULLETIN, V. 6, NO. 3, 15 P.

Reference (Deposit): WORCESTER, P.G., 1919, MOLYBDENUM DEPOSITS OF COLORADO: CGS BULLETIN 14, P. 73-74.

Colorado Mining Photos

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