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Monumental Ridge Kyanite Deposit

Occurrence in Shoshone county in Idaho, United States with commodity Kyanite
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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. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Ownership information
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10078686
MRDS ID W027151
Record type Site
Current site name Monumental Ridge Kyanite Deposit

Geographic coordinates

Geographic coordinates: -115.80771, 47.02547 (WGS84)
Elevation 2021
Relative position 15.5 MI S OF AVERY, IDAHO

Site location context

Political divisions (FIPS codes)

Shoshone(county)

Idaho(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Monumental Buttes(quadrangle 1:24,000 scale)

Wallace(quadrangle 1:100,000 scale)

Wallace(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower North Fork Clearwater(hydrologic unit)

Clearwater(hydrologic accounting unit)

Lower Snake(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Idaho Panhandle 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 Idaho Shoshone

Public Land Survey System information

Meridian Township Range Section Fraction State
Boise 043N;042N 005E;005E 28,34,35,03 Idaho

Comments on the location information

  • PLOTTED IN SECTION 34

Commodities

Commodity Importance
Kyanite Primary

Materials information

Materials Type of material
Andalusite Ore
Kyanite Ore
Sillimanite Ore
Biotite Gangue
Chlorite Gangue
Garnet Gangue
Hornblende Gangue
Muscovite Gangue

Analytical data

Result KYANITE: ANDALUSITE RATIO OF 2:1
Result 20 CHIP SAMPLES HAD 8 - 25 % KYANITE - ANDALUSITE, WITH AVG. OF 15.7 %

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Anorthosite
    Rock unit name Gabbro;Anorthosite
    Rock description Gabbro;Anorthosite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Metamorphic Rock > Schist
    Rock unit name Prichard Formation
    Rock description Prichard Formationt
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss

Nearby scientific data

(1) -115.80771, 47.02547
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Foliation Planes

Ore body information

  • General form TABULAR
    Strike N 20 DEG E
    Dip 35 DEG SE
    Thickness 42.67M
    Length 3139.44M
    Width 487.68M

Controls for ore emplacement

  • Contact Of Schist And Gneiss With Anorthosite

Economic information about the deposit and operations

Development status Occurrence
Commodity type Non-metallic
Deposit size Small
Significant No

Mining district

District name Sliderock District

Land status

Ownership category National Forest
Area name St. Joe National Forest

Ownership information

  • Type Operator
    Owner R. E. Boyce, C. M. Boyce, W. G. Moody ( 1965 )

Comments on development

  • 15 CLAIMS ( 1965 ) ; ECON.COM: KYANITE ZONE COULD BE MINED BY CONVENTIONAL SURFACE MINING METHODS

Reference information

Bibliographic references

  • Deposit

    VAN NOY, R. M., AND OTHERS, 1970 , KYANITE RESOURCES IN THE NORTHWESTERN UNITED STATES: USBM REPT. INV. 7426 , 81 P

  • Deposit

    1970 RECON USBM REPT. INV. 742

General comments

Subject category Comment text
Deposit DIP RANGES 20 - 50 DEG SE; STRIKE N 10 - 30 DEG E; THICKNESS ABOVE AVERAGE FOR KYANITE ZONE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1977 Siefken, Robert R. (Miller, Pat) U.S. Geological Survey

Beyond USGS

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

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