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  3. Mineral Resource Data System (MRDS)

Andalusite Occurrence

Occurrence in Piscataquis county in Maine, 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. Commodities
  6. Materials information
  7. Host and associated rocks
  8. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10069790
MRDS ID W007477
Record type Site
Current site name Andalusite Occurrence

Geographic coordinates

Geographic coordinates: -69.41605, 45.36662 (WGS84)

Site location context

Political divisions (FIPS codes)

Piscataquis(county)

Maine(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Monson East(quadrangle 1:24,000 scale)

Dover-Foxcroft(quadrangle 1:100,000 scale)

Millinocket(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Piscataquis River(hydrologic unit)

Penobscot(hydrologic accounting unit)

Penobscot(hydrologic subregion)

New England(hydrologic region)

Geographic areas

Country State County
United States Maine Piscataquis

Commodities

Commodity Importance
Kyanite Tertiary

Materials information

Materials Type of material
Andalusite Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Rock unit name Onawa Pluton-Granitic Rock
    Rock description Onawa Pluton-Granitic Rock
    Stratigraphic age (youngest) Late Silurian
    Stratigraphic age (youngest) Late Silurian
  • Host or associated Host
    Rock type Metamorphic Rock > Hornfels
  • Host or associated Host
    Rock type Metamorphic Rock > Schist
    Rock unit name Andalusite Schist, Hornfels
    Rock description Andalusite Schist, Hornfels

Nearby scientific data

(1) -69.41605, 45.36662
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Economic information

Ore body information

  • General form CIRCULAR, LAYERED

Comments on the geologic information

  • ANDALUSITE HORNFELS AND SCHISTS SURROUNDING INTRUSIVE COMPLEX ABOUT 11 MI. LONG AND 3 MI. WIDE.

Economic information about the deposit and operations

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

Mining district

District name Lake Onawa Region

Comments on the workings information

  • DEPOSITS HAVE LITTLE ECONOMIC IMPORTANCE AND DO NOT JUSTIFY SPECIAL STUDY

Comments on development

  • UNDEVELOPED

Reference information

General comments

Subject category Comment text
Deposit SIMILAR CONTACT ZONES OCCUR AROUND OTHER GABBROIC AND GRANITIC INTRUSIONS OF THE REGION ; INFO.SRC : 4 OTHER SRC

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1959 Espenshade, Gilbert H. U.S. Geological Survey

Beyond USGS

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

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