Island Mountain

The Island Mountain is a mine located in Trinity county, California at an elevation of 600 feet.

About the MRDS Data:

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.

Mine Info

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Island Mountain
Secondary: Dahrman Group

Commodity

Tertiary: Copper
Tertiary: Gold
Tertiary: Silver

Location

State: California
County: Trinity

Land Status

Not available

Holdings

Type: Patented
Type: Other

Workings

Type: Underground

Ownership

Owner Name: John Mosier
Home Office: California
Info Year: 1974

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Underground
Mining Method: Unknown
Discovery Year: 1942
Years of Production:
Organization:
Significant: N

Physiography

General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: California Coast Ranges

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Not available

Comments

Comment (Deposit): BASIC DATA LISTED IN REF 1 & 2 REC 030 DATA FROM MILS SYSTEM (REF 1). COMPANY CONTROLS LAND SEC 9,10,15 T5S R6E (HUMBOLDT B AND M LINE) PRELIMINARY COMMENTS. AFTER 2 YEARS OF PREPRODUCTION MINING CONTINUE FOR 4 YEARS, BASED ON 50% PROBABILITY RESERVE AND 90% MINING RECOVERY. REC 101 EST. LIFE 4YR AT 50% PROB LEVEL (ROW 1 COL 2) 145,00 MINE LIFE BASED ON PLANT CAPACITY-91MTPD, REC 151 REC 120 BASE YEAR 1970 USED FOR MINE COSTING. MINE CAPITAL COST TOTAL $2,452,000 (1970 DOLLAR VA AQUIS 50,000 EXPLOR 530,000 DEVEL 690,900 EQUIP 509,100 PLANT 503,100 WORK.CAP. 168,900 MINE OPERATING COST $16.69/MT REF 2, P.588 LIST OVER 3000 FEET OF WORKINGS. REC 151 REFER TO LEWIS CALCULATIONS- BASED ON LYMAN MOORE DA BASE YEAR 1970 USED FOR MILL COSTING.(1970 DOLLAR VA MILL CAPITAL COST TOTAL $1,234,500 PLANT & EQUIP 1,206,000 WORK,CAP 28,500 MILL OPERATING COST $ 3.05/MT

References

Reference (Deposit): COPPER MINES. GOOD BIBLIOGRAPHY.

Reference (Deposit): REF 4 MOORE,LYMAN, 1970 COSTING REPORT FOR ISLAND MOUNTAIN.

Reference (Deposit): NOT FIND A BACK UP FILE OTHER THAN A 12 X 24 ACCOUNTI

Reference (Deposit): SHEET WITH PRODUCT AND RESERVE DATA WRITTEN ON IT.

Reference (Deposit): REF 5 THE OFFICIAL RAILWAY GUIDE,1975 NO.4,NATIONAL RAILWAY

Reference (Deposit): CATION COMPANY,424 WEST 33RD STREET, NEW YORK,NY 1000

Reference (Deposit): REF 2 THE MINES HANDBOOK, VOL XVIII 1931.PUB BY MINES INFOR

Reference (Deposit): BUREAU,INC. SUFFERN NEW YORK.P 588

Reference (Deposit): REF 3 COPPER IN CALIFORNIA, BULL 144, DIV OF MINES, CALIF D

Reference (Deposit): NAT. RESOURCES; DEC 1948. P 350. INCL 61 PLATES ON VA

Reference (Deposit): REF 1 MINERAL INDUSTRY LOCATION SYSTEM - MILS- COMPUTER DUM

Reference (Deposit): CALIF.COPPER.

Reference (Deposit): CALIF BULL 152 1950 P 314

California Gold

"Where to Find Gold in California" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in California. Read more: Where to Find Gold in California.