Cowlitz Clay

The Cowlitz Clay is a mine located in Cowlitz county, Washington at an elevation of 518 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: Cowlitz Clay
Secondary: Cowlitz High Alumina Clay
Secondary: Cowlitz Kaolin

Commodity

Tertiary: Iron
Tertiary: Silica
Tertiary: Aluminum
Tertiary: Water, Free
Tertiary: Titanium

Location

State: Washington
County: Cowlitz
District: Unorganized District

Land Status

Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.

Holdings

Type: Fee Ownership

Workings

Type: Surface

Ownership

Owner Name: John Sides
Home Office: Washington
Info Year: 1955

Owner Name: Cowlitz Holding Co.
Home Office: Washington
Info Year: 1955

Owner Name: State Of Washington School Land
Home Office: Washington
Info Year: 1955

Owner Name: Weyerhaeuser Timber Co.
Home Office: Washington
Info Year: 1955

Owner Name: Gladding-Mc Bean And Co.
Home Office: California
Info Year: 1955

Owner Name: Pope And Talbot Inc.
Home Office: California
Info Year: 1955

Production

Not available

Deposit

Record Type: Site
Operation Category: Prospect
Operation Type: Surface
Mining Method: Unknown
Year First Production: 1937
Discovery Year: 1935
Years of Production:
Organization:
Significant: N

Physiography

General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: Puget Trough

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Unknown: Beidellite
Unknown: Gibbsite
Unknown: Halloysite
Unknown: Hematite
Unknown: Ilmenite
Unknown: Kaolinite
Unknown: Limonite
Unknown: Mica
Unknown: Nontronite
Unknown: Quartz
Unknown: Siderite
Unknown: Montmorillonite
Unknown: Feldspar

Comments

Comment (Deposit): THERE ARE THREE SETS OF COSTS; COSTS ORIGINALLY ENTERED IN 1975, COSTS UPDATED FROM 1975 TO 1979, AND COMPLETELY RECOSTED 1979 COSTS. ALL COSTS ARE ASSUMED TO BE MIDYEAR. DEPOSIT LIFE IS 70 YEARS AT A PRODUCTION RATE OF 1965000 TONNES PER YEAR. THE MILL CAPACITY CAN BE INCREASED TO SHORTEN THE LIFE; OR OTHER MILLS CAN BE ADDED SUBSEQUENTLY OR CONCURRENTLY AND OPERATED FOR 25 AND 20 YEARS; RESPECTIVELY; IN ADDITION TO THE CURRENT MILL WHICH WOULD OPERATE FOR 25 YEARS.

Comment (Reserve-Resource): MATRIX TONNAGE AND GRADES WERE DEVELOPED IN HOUSE IN 1975 FROM USBM & USGS DATA. THE WORK WAS PERFORMED IN 1942 AND 1943. TONNAGE AND GRADE FIGURES HAVE BEEN MULTI- PLIED BY THE APPROPRIATE CONVERSIONS TO ACCOUNT FOR METRIC TONNES AND MOISTURE CONTENT

References

Reference (Deposit): PRODUCTION OF ALUMINUM SULFATE BY SULFITE-SULFATE

Reference (Deposit): SNOEBERGER, D., AND J. WEGNER. PROCESS DEVELOPMENT FOR

Reference (Deposit): 12 PP.

Reference (Deposit): A PLANT AT SALEM, OREGON. AIME TECH. PAPER 2473, 1948,

Reference (Deposit): EXTRACTION OF ALUMINA FROM CLAY AND ITS APPLICATION IN

Reference (Deposit): SEYFRIED, W.R. THE AMMONIUM SULPHATE PROCESS FOR THE

Reference (Deposit): COUNTIES, WASH. U.S. GEOLOGICAL SURVEY BULL. 1062, 1958, 71 PP.

Reference (Deposit): TOLEDO-CASTLE ROCK DISTRICT, COWLITZ AND LEWIS

Reference (Deposit): ROBERTS, A.E. GEOLOGY AND COAL RESOURCES OF THE

Reference (Deposit): BULL. T-3, 1943, 10 PP.

Reference (Deposit): WASHINGTON, DEPT. CHEM. AND CHEM. ENG. RES. PROJECT 34.

Reference (Deposit): CIATION OF CLAY BY AIR SEPARATION. THE STATE COLLEGE OF

Reference (Deposit): ALUMINA FROM CLAY (IN THREE PARTS). PART III. BENEFI-

Reference (Deposit): REDLICH, O., M.F. ADAMS, AND R.O. DHONDT. EXTRACTION OF

Reference (Deposit): BUMINES REPT. OF INV. 5157, 1955, 60 PP.

Reference (Deposit): POPOFF, C.C. COWLITZ CLAY DEPOSITS NEAR CASTLE ROCK, WASH.

Reference (Deposit): E, 1935, 51 PP.

Reference (Deposit): STATE COLLEGE OF WASHINGTON, SCH. MINES AND GEOL. BULL.

Reference (Deposit): FOR THE PRODUCTION OF ALUMINA AND ALUMINUM METAL. THE

Reference (Deposit): PARKMAN, H.C. SULPHURIC ACID LEACHING OF WASHINGTON CLAYS

Reference (Deposit): BUMINES REPT. OF INV. 6280, 1963, 20 PP.

Reference (Deposit): FERRUGINOUS-BAUXITE BY A DOUBLE-LEACH PROCESS.

Reference (Deposit): HOLBROOK, W.F. AND L.A. YERKES. EXTRACTION OF ALUMINA FROM

Reference (Deposit): DIV. GEOL. BULL. 24, 1941, 368 PP.

Reference (Deposit): GLOVER, S.L. CLAYS AND SHALES OF WASHINGTON. WASHINGTON

Reference (Deposit): 2. 1946, PP. 124-138.

Reference (Deposit): FORMATION OF HIGH-ALUMINA CLAY. ECON. GEOL., V. 41, NO.

Reference (Deposit): ALLEN, V.T. SEDIMENTARY AND VOLCANIC PROCESSES IN THE

Reference (Deposit): WASHINGTON GEOLOGICAL SURVEY BULL. 13, 1916, 327 PP.

Reference (Deposit): ALUMINUM CO., 1946, 16 PP.

Reference (Deposit): WEAVER, C.E. THE TERTIARY FORMATIONS OF WESTERN WASHINGTON.

Reference (Deposit): LEACHING PROCESS FROM CASTLE ROCK CLAY. SPOKANE

Washington Gold

"Where to Find Gold in Washington" 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 Arizona. Read more: Where to Find Gold in Washington.