A & C Prospect

The A & C Prospect is a beryllium mine located in Park county, Colorado at an elevation of 8,701 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: A & C Prospect
Secondary: A & C Mine
Secondary: A & C Claim
Secondary: A & C Claims
Secondary: A & C No. 2 Claim

Commodity

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

Not available

Ownership

Not available

Production

Year: 1966
Time Period: 1956-1966
Material type: BE ORE EST
Description: Cp_Grade: ^8% Beo

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Surface
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

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: Host Rock
Age Young: Neoproterozoic

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

Analytical Data

Analytical Data: MASSES OF GALENA CONTAIN 0.3-0.7% AG, 0.3-1.5% BI, 0.007-0.7% CU

Materials

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

Comments

Comment (General): Anna Wilson (USGS) merged information from 10167591 with this record. There were 2 discrepancies. 10167591 called this a Past Producer (and based on Production Comment #2, it is), but 10013783 was labeled Occurrence.

Comment (Location): 10167591 called this Private, but 10013783 classifies it as National Forest. This has not been resolved.

Comment (Production): 10167591 called this a Past Producer (and based on Production Comment #1, it is), but 10013783 was labeled Occurrence.

Comment (Production): SELECTIVELY MINED, HAND SORTED TO PRODUCE ABOVE GRADE; IN 1960 1 TON/WEEK BEING STOCKPILED

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 (Location): CHINA WALL AREA ; INFO FROM LAND.ST :(1976)

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

References

Reference (Production): MEEVES, H.C., 1966

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

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

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