1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Heckendorm

Past Producer in Calaveras county in California, United States with commodities Gold, Silver, Copper, Antimony
Map
XML
JSON
KML
B
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. Ore body information
  11. Economic information about the deposit and operations
  12. Production statistics
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10029517
MRDS ID M007099
Record type Site
Current site name Heckendorm
Alternate or previous names Blue Mountain
Related records 10259795

Geographic coordinates

Geographic coordinates: -120.39462, 38.37463 (WGS84)
Elevation 1158
Relative position 1 1/4 MI W OF BUCK MOUNTAIN

Site location context

Political divisions (FIPS codes)

Calaveras(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Fort Mountain(quadrangle 1:24,000 scale)

San Andreas(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Mokelumne(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Calaveras

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 006N 014E 14 California

Comments on the location information

  • UTM ACC - SEE COMMENTS

Commodities

Commodity Importance
Gold Primary
Silver Primary
Copper Secondary
Antimony Critical Secondary

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Analytical data

Result FROM ORE TO SMELTER IN 1935 : GOLD, 0.86 OZ PER TON
Result SILVER, 4.10 OZ PER TON
Result COPPER 0.2 %
Result ARSENIC 0.05 %
Result ANTIMONY 0.2 %
Result INSOLUBLE 93.2 %
Result IRON, 3.6 %, LIME 1.0 %

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss

Nearby scientific data

(1) -120.39462, 38.37463
ListMap

Economic information

Ore body information

  • Strike N 3 W
    Dip 61 W
    Thickness 1.22M

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Production statistics

  • Year 1935
    Material ORE
    Accuracy Accurate
    Description Ap_Grade: ^0.86 Oz Au And 4.1 Oz Ag Per Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Silver Silver 116g/mt
    Major Ore Gold Gold 24g/mt

Comments on the production information

  • ACTIVE 1860'S, 1870'S, 1935 - 1936

Comments on the workings information

  • DEVELOPED BY 50 FT SHAFT AND A N 150 FT DRIFT AT BOTTOM AND OPEN CUT, WEST VEIN DEVELOPED BY 350 FT N DRIFT ADIT

Reference information

Bibliographic references

  • Deposit

    CLARK, W.B., LYDON, P.A., 1962 , MINES AND MINERAL RESOURCES OF CALAVERAS COUNTY, CALIF.; COUNTY REPORT 2 ; CALIF. DIV. OF MINES AND GEOLOGY, P 157 AND PL B

  • Deposit

    LOGAN, C.A., FRANKE, H., 1936 , MINES AND MINERAL RESOURCES OF CALAVERAS CO.: CDM CALIF. JOUR. MINES & GEOL., VOL. 32 , NO. 3 , P. 263 - 4

  • Production

    LOGAN ( 1936 ) CLARK ( 1962 )

General comments

Subject category Comment text
Deposit BOTH REFERENCES AGREE ON LOCATION BUT PLATTED ON BLUE MT MAP AS IN SEC 14 T 6 N R 14 E - THESE ARE UTM LOCATIONS.REFERENCES GIVE LOCATION AS SEC 18 , T 6N, R 15E - NO EVIDENCE ON MAP OF MINE IN THIS LOCALITY ; INFO.SRC : 1 PUB LIT
Deposit VEIN, PRINCIPAL VEIN OUTCROP CAN BE TRACED FOR 1000 FT AND IS MIDDLE VEIN, GRANODIORITE FOOTWALL AND PORPHYRY HANGING WALL. TWO OTHER VEINS ON PROPERTY. EAST VEIN: STRIKE N, DIP 78 W, AND WEST VEIN; N 16 W STRIKE, DIP 42 W. OUTCROP OF E VEIN TRACEABLE FOR 3000 FT AND IS 8 FT WIDE, W VEIN IS 30 INCHES WIDE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1979 Mateik, R.; Albers, John P. U.S. Geological Survey

Beyond USGS

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

Maps centered on this site

Authoritative California resources

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