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  3. Mineral Resource Data System (MRDS)

Brandt Beryl-Topaz Prospect

Occurrence in Clear Creek county in Colorado, United States with commodity Beryllium
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10013762
MRDS ID D010226
Record type Site
Current site name Brandt Beryl-Topaz Prospect
Alternate or previous names Beaver Brook Pegmatite

Geographic coordinates

Geographic coordinates: -105.39976, 39.70943 (WGS84)
Elevation 2402
Relative position 8.9 MILES S 67 W FROM GOLDEN

Site location context

Political divisions (FIPS codes)

Clear Creek(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Saddleback Mountain(quadrangle 1:24,000 scale)

Denver West(quadrangle 1:100,000 scale)

Denver(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Clear(hydrologic unit)

South Platte(hydrologic accounting unit)

South Platte(hydrologic subregion)

Missouri(hydrologic region)

Geographic areas

Country State County
United States Colorado Clear Creek

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 004S 072W 12 SW Colorado

Comments on the location information

  • ON SOUTH SIDE OF BEAVER BROOK ACROSS STREAM FROM BEAVER BROOK SCHOOL ; INFO FROM LAND.ST :(1975)

Commodities

Commodity Importance
Beryllium Critical Primary

Comments on the commodity information

  • MILS LISTS TA OCCURRENCE, BUT THIS IS UNCONFIRMED

Materials information

Materials Type of material
Beryl Ore
Topaz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Pegmatite
    Rock unit name Pegmatite
    Rock description Pegmatite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss
    Rock unit name Idaho Springs Formation---Feldspar-Rich Gneiss Interlayered With Hornblende Gneiss
    Rock description Idaho Springs Formation---Feldspar-Rich Gneiss Interlayered With Hornblende Gneiss

Nearby scientific data

(1) -105.39976, 39.70943
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Front Range Uplift, Denver Basin
Type of structure Local
Structure description Floyd Hill Fault Zone

Ore body information

  • General form TABULAR
    Thickness 1.83M
    Length 45.72M

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Clear Creek Pegmatite Province

Land status

Ownership category Federal

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit ZONED PEGMATITE TRENDS N 78 E, 30 SE, AND IS ROUGHLY CONCORDANT TO COUNTRY ROCK GNEISS

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1983 Schwochow, Stephen D. Colorado Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative Colorado resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.