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Hilltop No. 23 Mine

Past Producer in Larimer county in Colorado, United States with commodities Beryllium, Uranium
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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. Ownership information
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10087856
MRDS ID D010327
Record type Site
Current site name Hilltop No. 23 Mine
Alternate or previous names Hilltop Group

Geographic coordinates

Geographic coordinates: -105.34392, 40.50637 (WGS84)
Elevation 2390
Location accuracy 2000(meters)
Relative position 12.3 MILES N 43 E FROM ESTES PARK

Site location context

Political divisions (FIPS codes)

Larimer(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Buckhorn Mountain(quadrangle 1:24,000 scale)

Fort Collins(quadrangle 1:100,000 scale)

Greeley(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Big Thompson(hydrologic unit)

South Platte(hydrologic accounting unit)

South Platte(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Arapaho and Roosevelt National Forests(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Colorado Larimer

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 006N 071W 03,04,09,10 Colorado

Comments on the location information

  • IN LAMPTON RIDGE-HYATT HILL-BALD RIDGE AREA ALONG STRINGTOWN GULCH AND BEAR GULCH, 5.2 MILES SE OF CRYSTAL MOUNTAIN. ELEV AND LAT-LONG GIVEN ARE FOR APPROX COMMON SECTION CORNER. ; INFO FROM LAND.ST :(1980)

Commodities

Commodity Importance
Beryllium Critical Primary
Uranium Tertiary

Materials information

Materials Type of material
Beryl Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Tonalite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Associated
    Rock type Plutonic Rock > Pegmatite
    Rock unit name Pegmatite;Tonalite (Quartz Diorite)
    Rock description Pegmatite;Tonalite (Quartz Diorite)
  • Host or associated Host
    Rock type Metamorphic Rock > Schist > Mica Schist
    Rock unit name Metasedimentary Rocks-Mica Schist;Pegmatite
    Rock description Metasedimentary Rocks-Mica Schist;Pegmatite

Nearby scientific data

(1) -105.34392, 40.50637
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Front Range Uplift
Type of structure Local
Structure description Thompson Canyon Fault, Mt Olympus Batholith, Ne-Trending Folds

Ore body information

  • Length 121.92M
    Width 9.14M

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of last production 1958

Mining district

District name Crystal Mountain (Storm Mountain) Pegmatite District

Land status

Ownership category National Forest

Ownership information

  • Type Owner-Operator
    Owner American Beryl Corp.
    Home office Fort Collins, Co.
    First year 1958

Comments on the workings information

  • SMALL OPEN CUTS

Reference information

Bibliographic references

  • Deposit

    THURSTON, W.R., 1955, PEGMATITES OF THE CRYSTAL MOUNTAIN DISTRICT, LARIMER COUNTY, COLORADO: USGS BULL. 1011, 185 P., 13 PLS.

  • Deposit

    MEEVES, H.C., AND OTHERS, 1966, RECONNAISSANCE OF BERYLLIUM-BERING PEGMATITE DEPOSITS IN SIX WESTERN STATES: USBM IC-8298, P. 30.

  • Deposit

    COLORADO DIV. MINES INF. REPT.

General comments

Subject category Comment text
Deposit UNZONED PEGMATITE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-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.