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Alder Pond

Prospect in Somerset county in Maine, United States with commodities Copper, Lead, Zinc, Silver
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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. Alteration
  8. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Economic information about the deposit and operations
  12. Reserves and resources
  13. Bibliographic references
  14. Reporter information

Geologic information

Identification information

Deposit ID 10307224
Record type Site
Current site name Alder Pond

Geographic coordinates

Geographic coordinates: -70.208, 45.336 (WGS84)
Location accuracy 10000(meters)

Site location context

Political divisions (FIPS codes)

Somerset(county)

Maine(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Basin Mountain(quadrangle 1:24,000 scale)

Flagstaff Lake(quadrangle 1:100,000 scale)

Sherbrooke(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Dead River(hydrologic unit)

Kennebec(hydrologic accounting unit)

Kennebec(hydrologic subregion)

New England(hydrologic region)

Geographic areas

Country State County
United States Maine Somerset

Commodities

Commodity Importance
Copper Primary
Lead Primary
Zinc Critical Primary
Silver Secondary

Materials information

Materials Type of material
Sphalerite Ore
Chalcopyrite Ore
Galena Ore
Pyrite Ore
Quartz Gangue
Microcline Gangue
Muscovite Gangue

Alteration

  • (Local) Low Grade Metamorphism

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist > Greenschist
    Rock unit name Jim Pond Formation
    Rock description Jim Pond Formation
    Stratigraphic age (youngest) Cambrian

Nearby scientific data

(1) -70.208, 45.336
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Folding and faulting

Comments on the geologic information

  • The Alder Pond deposit is located about 100 miles southwest of the Mount Chase deposit. The rocks are mapped as the Cambrian Jim Pond Formation and include pillowed and interbedded volcaniclastic rocks and chert (Beck, 1993).

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Significant Yes

Reserves and resources

  • Type In-situ
    Estimate year 1993
    Total resources 1400000mt ore
  • Type In-situ
    Estimate year 1997
    Total resources 508000mt ore
    Commodity Subtype Grade units Group Importance Year
    Silver 103 g/mt Silver Minor 1997
    Lead 0.5 wt-pct Lead Major 1997
    Zinc 9 wt-pct Zinc Major 1997
    Copper 2.2 wt-pct Copper Major 1997

Comments on the reserve resource information

  • Prospectors Alliance Corporation, Toronto, in joint venture with International Larder Minerals, Inc., completed a drilling program in 1996-1997 with 33 vertical holes focused on the main ore zone of the Alder Pond deposit. Drilling results from Prospectors Alliance reported reserves for the main zone of 508,000 tons averaging 2.2% Cu, 0.5% Pb, 9.0% Zn and 103 grams per ton Ag. No new drilling was reported in the south zone of the deposit, previously estimated by BHP minerals to host 907,000 tons of ore (USGS, 1999).

Reference information

Bibliographic references

  • Deposit

    Beck, F.M., 1993, Massive-sulfide deposits of New England: Exploration and Mining Geology, v. 2, p. 402-404.

  • Reserve-Resource

    U.S. Geological Survey, 1999, The mineral industry of Maine, in Area reportsuDomestic: U.S. Geological Survey Minerals Yearbook 1997, v. II, 3 p.

Reporter information

Type Date Name Affiliation Comment
Reporter 07-JAN-04 Woodruff, Laurel G. U.S. Geological Survey Work done in Filemaker

Beyond USGS

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

Maps centered on this site