Blue Moon

  

Mine Info

State: California

County: Mariposa

Elevation:

Primary Mineral: Zinc, Copper

Lat, Long: 37.56611, -120.25556



Blue Moon MRDS details

Site Name

Commodity

Location

Primary: "Blue Moon"
Secondary: "Blue Cloud"
Secondary: "Red Cloud"
Secondary: "Percupine"
Primary: Zinc
Primary: Copper
Secondary: Silver
Secondary: Lead
Secondary: Gold
State: California
County: Mariposa
District:
 

Land Status

Holdings

Workings

Land ownership:
Administrative Organization:
Type: Surface/Underground


Ownership

Production

Deposit

Owner Name: Hecla Mining Co.
Company ID:
Percent:
Home Office:
Info Year:
Years: 1945 -

Record Type: Site
Operation Category: Past Producer
Deposit Type: Replacement
Plant Type:
Plant Subtype:
Operation Type: Unknown
Mining Method:
Milling Method:
Year First Production: 1935
Year Last Production: 1945
Discovery Year: 1935
Discovery Method:
Years of Production:
Organization:
Significant: N
Deposit Size: L


Physiography

Mineral Deposit Model

Orebody

General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: California Trough
Physiographic Detail:
Name:
Form: TABULAR


Structure

Alterations

Rocks

Alteration Type: L
Alteration:
Alteration Text: Silicification, Sericitization, Pyritization, Chloritization. 2500 Ft Long, 800 Ft Wide.
Name: Slate
Role: Associated
Description:
Age Type: Host Rock
Age in Years:
Dating Method:
Material Analyzed:
Age Young: Late Jurassic
Age Old:


Analytical Data

Materials

Analytical Data : ORE IN MAIN OR NO. 1 Analytical Data : 13.1 % ZN, .36 % CU, .47 % PB, .061 OZ/TON AU, 3.75 OZ/TON AG.
Ore: Chalcocite
Ore: Malachite
Ore: Chalcopyrite
Ore: Tetrahedrite
Ore: Sphalerite
Ore: Pyrite
Ore: Galena
Gangue: Hematite
Gangue: Sericite
Gangue: Barite
Gangue: Quartz
Gangue: Calcite
Gangue: Limonite


Comments

Comment Type:
Deposit
Comment Discovery Year: 1930S
Comment Type:
Workings
Comment PRINCIPAL WORKINGS; 500 FT. SHAFT, NO. 2 INCLINED 80 DEG. W, LEVELS AT 125 , 165 , 275 , 385 , 450 FT. 200 FT. OF DRIFTS AND SUBSIDIARY WORKINGS ON 125 - LEVEL, 600 FT. OF WORKINGS ON 165 - LEVEL, 250 FT. WORKINGS ON 275 - LEVEL, 225 FT. WORKINGS ON 385 - LEVEL AND 150 FT. WORKINGS ON 450 - LEVEL. 250 FT. SOUTH IS NO. 1 SHAFT 35 FT. DEEP CONNECTED TO MAIN WORKINGS BY RAISE. SEVERAL OPEN CUTS, 2 OVER 100 FT. LONG. MAIN SHAFT, ADJOING WORKINGS CAVED.
Comment Type:
Geology
Comment GEOL.DESC: MINERALIZED ZONE IN METAVOLCANICS OF PENON BLANCO FORMATION OF UPPER JURASSIC AMADOR GROUP. TRENDS N 10 - 20 W, DIPPING STEEPLY EAST. FELSITIC GREENSTONE AND GREENSTONE TUFF - BRECCIA ARE PRINCIPAL ROCK TYPES.
Comment Type:
Production
Comment 1945 MINE ABANDONED BECAUSE OF CAVING. COPPER PRODUCED IN 1935 AND 1942 ALSO.
Comment Type:
Deposit
Comment THREE OUTCROPPING MINERALIZED ZONES. NO. 1 IS LENTICULAR, STRIKES N 15 E, DIPS 48 - 87 W, IT IS IRREGULAR WITH MAXIMUM WIDTH 38 FT., STRIKE LENGTH 180 FT., WORKED TO DEPTH OF 450 FT. NO. 2 , 10 FT. FROM NO. 1 AND PARALLELS IT, AVG. WIDTH 5 FT., STRIKE LENGTH 80 FT. AT 165 FT. LEVEL, PINCHES OUT ABOVE AND BELOW 165 FT. LEVEL. NO. 3 , 40 FT. FROM NO. 1 , STOPE LENGTH 50 - 80 FT., WIDTH 4 - 9 FT., STRIKES N 5 E, DIPS 80 W, IT EXTENDS BELOW 165 FT. LEVEL.


References

Reference Category:
Deposit
Pages:
Reference: BOWEN, O. E. AND CLIFFTON, G. H., 1957 , MINES AND MINERAL RESOURCES OF MARIPOSA COUNTY, CALIFORNIA; CALIF. JOUR. MINES AND GEOLOGY, VOL. 53 , NO. 1 & 2 , P. 200 - 202 .
URL:
Reference Category:
Deposit
Pages:
Reference: ERIC, J. H. AND COX, M. W., 1948 , ZINC DEPOSITS OF THE AMERICAN EAGLE - BLUE MOON AREA, MARIPOSA COUNTY, CALIFORNIA; COPPER IN CALIFORNIA BULL. 144 ; DIV. OF MINES, P. 144 - 150 .
URL:
Reference Category:
Deposit
Pages:
Reference: CALIF. JOUR. MINES & GEOLOGY, V. 53, NOS.3 & 4, P. 547; ADD. REF.: DMPA APPL'N 2162 - SIERRA ZINC INC. - REPORTED MAY, 1952 BY WEHELT - DMEA INDEX -CALIF. NEV. P. 9
URL:
Reference Category:
Production
Pages:
Reference: ERIC, J. H., AND COX, M. W., 1948 , P. 145 (SEE REF.)
URL:

Did You Know.......

A mine is a hole in the ground, owned by a liar.
-Mark Twain

About The MRDS Mines Database

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

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