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Morning Star

Past Producer in Alpine county in California, United States with commodities Silver, Gold, Copper, Barium-Barite
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Geologic information

Identification information

Deposit ID 10006814
MRDS ID C004746
Record type Site
Current site name Morning Star

Geographic coordinates

Geographic coordinates: -119.70043, 38.68519 (WGS84)
Relative position 3 MI NW OF HEENAN LAKE.
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Geographic areas

Country State County
United States California Alpine

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 010N 021E 29 California

Comments on the location information

  • UTM ACC. W 1/2

Commodities

Commodity Importance
Silver Primary
Gold Secondary
Copper Secondary
Barium-Barite Secondary

Comments on the commodity information

  • RESEMBLES OTHER DISTRICT PRODUCERS EXCEPT THAT ENARGITE IS MORE ABUNDANT IN LATE 19TH CENT A BODY OF ENARGITE MIXED WITH PYRITE WAS FOUND MEASURING 10 TO 15 FT THICK AND 20 - 30 FT LONG.

Materials information

Materials Type of material
Chalcopyrite Ore
Pyrite Ore
Barite Gangue
Quartz Gangue

Alteration

  • (Local) Silicification

Host and associated rocks

  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Stratigraphic age (youngest) Pliocene

Nearby scientific data

(1) -119.70043, 38.68519
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Geologic structures

Type of structure Local
Structure description Shear Zone

Ore body information

  • Depth to top 0M

Comments on the geologic information

  • E SIDE OF MAJOR ALTERATION SILICIFICATION OF DISTRICT. SHEAR ZONE APPEARS TO TREND SW THRU CURTZ & GEORGIANA MINES, & THEN SE ALONG S SIDE OF MONITOR CANYON NEAR ZACA MILL. MINE DUMP HAS WHITE SILICFIED ROCK THAT CONTAINS MOSTLY FINE - TO - MEDIUM GRAINED MINERALS. SILICFIED HILL TOP STANDS OUT FROM SURROUNDING UNALTERED ANDESITE. IN PLACES THE SILICFIED ROCK IS IRON OXIDE STAINED.

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both metallic and non-metallic
Deposit size Small
Significant No

Mining district

District name Monitor - Mogul

Comments on the production information

  • SOME ORE WAS SHIPPED AS FAR AS SWANSEA, WALES FOR SMELTING. MINE PRODUCED FAIRLY STEADILY 1863 - 1904 ON FAIRLY LARGE SCALE. IN 1951 , 1952 & 1957 MINOR EXPLORATION WAS DONE.

Workings at the site

  • Type of workings Underground
    Overall depth 191.41M

Comments on the workings information

  • 1200 FT MAIN ADIT, SSE TRENDING, KNOWN AS 148 FT LEVEL. 480 FT SHAFT CONNECTED 922 FT N FROM PORTAL. ALSO 220 , 280 & 480 FT LEVELS CROSSCUTS EXTEND TO ORE ZONE, ALSO STOPINGS, WINZES. MAIN ADIT, SHAFT OPEN IN 1971 . WORKINGS OF GEORGIANA & CURTZ WERE FOR A TIME DRIVEN FOR ORE BODIES IN SAME ZONE.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS C004746

Bibliographic references

  • Deposit

    CLARK, W. B., 1977 , MINES AND MINERAL RESOURCES OF ALPINE COUNTY, CALIF: CDMG COUNTY REPT NO 8 , P 20 , 21

  • Production

    CLARK, 1977 ; LOGAN, 1921

General comments

Subject category Comment text
Deposit RESULTS OF DIAMOND DRILLING PROGRAM OF 1962 , BOYLES DRILLING, SALT LAKE CITY, ARE UNKNOWN. ; INFO.SRC : 1 PUB LIT
Deposit ZONE OF SULFIDE MINERALIZATION

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1979 Hayden, F. (Albers, J.) U.S. Geological Survey