Mandan Mine

The Mandan Mine is a phosphorus-phosphates mine located in Rich county, Utah at an elevation of 5,518 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: Mandan Mine

Commodity

Primary: Phosphorus-Phosphates
Tertiary: Selenium

Location

State: Utah
County: Rich
District: Crawford Mts.

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: Located Claim

Workings

Not available

Ownership

Owner Name: Bradley Estates

Owner Name: San Francisco Chemical Co.

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Bedded -Phosphate
Operation Type: Surface
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: L

Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Middle Rocky Mountains
Physiographic Detail: Crawford Mountains

Mineral Deposit Model

Not available

Orebody

Form: TABULAR

Structure

Type: R
Description: Woodruff Thrust And Crawford Thrust

Type: L
Description: On The West Side Of A Syncline

Alterations

Not available

Rocks

Name: Shale
Role: Host
Age Type: Host Rock
Age Young: Late Permian

Analytical Data

Analytical Data: 25' 7" AVERAGING 60% CA3 (PO4)2 EQUIVALENT

Materials

Ore: Whitlockite

Comments

Comment (Reserve-Resource): NO FIGURES AVAILABLE

Comment (Commodity): PHOSPHATE ROCKS HAVE AN OOLITIC TEXTURE . SELENIUM IS FOUND IN THE CARBONACEOUS SHALES.

Comment (Location): SECTION SUBDIVISIONS NE 1/4 NE 1/4 NE 1/4

Comment (Production): NO PRODUCTION DUE TO LOW GRADE OF ORE

Comment (Deposit): DEPOSIT SIMILAR TO ARIKAREE MINE, THE THICKNESS OF THE INTERBEDDED SHALE, LIMESTONE, AND PHOSPHATE ROCK IS 25 FT 7 IN.

Comment (Workings): PORTAL CAVED. TUNNEL DRIVEN SOUTH ALONG WEST LIMB OF SYNCLINE.

References

Reference (Analytical Data): SRC.REF: GALE, H.S. AND RICHARDS, 1909, CONTRIBUTIONS TO ECON. GEOL. U.S.G.S. BULL. 430.

Reference (Deposit): 1909 RECON GALE AND RICHARDS BULL. 430

Reference (Deposit): 1979 RECON TRIPP U.G.M.S.

Reference (Production): WIDEMAN, F.L., 1958, MINING INCLINED BEDS OF PHOSPHATE ROCK: U.S.B.M. RI 7849

Reference (Reserve-Resource): TRIPP, B.T., 1980, ON SITE INVESTIGATION: UTAH GEOL. AND MINERAL SUR.

Reference (Deposit): TRIPP, B.T., 1980, ON SITE INVESTIGATION: UTAH GEOL. AND MINERAL SURVEY.

Reference (Deposit): RICHARDSON, G. B., GEOL. AND MIN. RES. OF THE RANDOLPH QUAD, UTAH-WYOMING: USGS BULL 923 , 1941 , P. 45

Reference (Deposit): WIDEMAN, F.L., 1958 , MINING INCLINE BEDS OF PHOSPHATE ROCK: USBM INF. CIRC 7849 , P. 21

Reference (Deposit): CHENEY, T.M., AND OTHERS, 1953 , STRATIG SECT OF THE PHOSPHORIA FM: USGS CIRC 306 , P. 7 - 11

Reference (Deposit): 5) DASCH,M.D., 1964, ANTIMONY AND OTHER MINOR METALS IN MINERAL AND WATER RESOURCES OF UTAH: UTAH GEOL. & MIN. SURV., BULL. 73, P. 143.

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