Chaney-Sims Beryl Prospects

The Chaney-Sims Beryl Prospects is a beryllium, mica, and feldspar mine located in Larimer county, Colorado at an elevation of 7,598 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: Chaney-Sims Beryl Prospects

Commodity

Primary: Beryllium
Primary: Mica
Primary: Feldspar

Location

State: Colorado
County: Larimer
District: Mayesville 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

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 1935
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: LENTICULAR

Structure

Type: R
Description: Front Range Uplift, Sherman Batholith

Type: L
Description: Poudre River Shear Zone

Alterations

Not available

Rocks

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

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

Analytical Data

Not available

Materials

Ore: Beryl
Ore: Muscovite
Gangue: Plagioclase
Gangue: Quartz

Comments

Comment (Location): SOUTH OF CACHE LA POUDRE RIVER ON NORTH VALLEY WALL OF SHEEP CREEK NEAR RUGH RANCH. ELEV AND LAT-LONG GIVEN ARE FOR RUGH RANCH (NE SEC. 01). ; INFO FROM LAND.ST :(1980)

Comment (Deposit): UNZONED PEGMATITE TRENDS N 5 E, VERTICAL, AND LIES PARALLEL TO FOLIATION. TWO SMALL 3-TO 5-FT-WIDE BRANCHES SEPARATED FROM MAIN BODY BY 5 TO 6 FT OF GNEISS. BERYL CONCENTRATED NEAR PATCHES OF MASSIVE QUARTZ.

Comment (Workings): SMALL DISCOVERY SHAFT OF UNKNOWN DEPTH

References

Reference (Deposit): HANLEY, J.B., AND OTHERS, 1950, PEGMATITE INVESTIGATIONS IN COLORADO, WYOMING, AND UTAH, 1942-1944: USGS PROF. PAPER 227, P. 104

Colorado Mining Photos

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