Sunnyside Mine

The Sunnyside Mine is a gold mine located in Valley county, Idaho at an elevation of 7,999 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: Sunnyside Mine

Commodity

Primary: Gold
Secondary: Silver

Location

State: Idaho
County: Valley
District: Thunder Mountain District

Land Status

Land ownership: National Forest
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.
Administrative Organization: Payette National Forest

Holdings

Not available

Workings

Type: Underground

Ownership

Owner Name: Placer Amex

Production

Year: 1938
Time Period: 1926-1938
Material type: ORE
Description: Cp_Grade: ^Ave. 0.22 - 0.28 Oz Au/Ton

Deposit

Record Type: Site
Operation Category: Producer
Operation Type: Unknown
Discovery Year: 1899
Discovery Method: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Salmon River Mountains

Mineral Deposit Model

Not available

Orebody

Form: BLANKET - LIKE

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Zeolitic And Argillic; Oxidation; Silicification

Rocks

Name: Rhyolite
Role: Associated
Age Type: Host Rock
Age Young: Eocene

Name: Rhyolite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Eocene

Name: Rhyolite
Role: Associated
Age Type: Associated Rock
Age Young: Eocene

Analytical Data

Analytical Data: SAMPLE ASSAYED 0.12 OZ AU AND 2.36 OZ AG/TON. AVERAGE ASSAY OF LARGE GROUND BLOCKS RANGES 0.15 TO 0.25 OZ AU/TON.

Materials

Gangue: Pyrite

Comments

Comment (Reserve-Resource): ESTIMATED BY G. E. ZIEGLER

Comment (Production): $5000 WORTH AU BEFORE 1908; $115,000 TOTAL PRODUCTION 1926 - 1938

Comment (Development): 40 - STAMP MILL, 8000 FT TRAMWAY BY 1904 . TRENCHING AND CHURN DRILLING PROGRAM IN 1950'S. R. J. AND G. C. MC CREA (MCRAE?) AND W. BROWN PATENTED 8 LODE CLAIMS IN 1962 , COVERING 185 ACRES IN MINE AREA. ; ECON.COM: HIGH COST TRANSPORTATION DUE TO REMOTENESS

Comment (Deposit): UPPER LIMIT OF MINERALIZATION IS DARK-COLORED CLAYEY ROCK, (MUDFLOW?)

Comment (Location): HEAD OF SUNNYSIDE CREEK ON NE SLOPE OF THUNDER MOUNTAIN ON DIVIDE BETWEEN MULE CREEK AND TRIB. TO MARBLE CREEK. LAND STATUS VALUE CALCULATED 7-94 USING GIS OVERLAY ANALYSIS WITH USFS LAND OWNERSHIP BOUNDARIES, 1:126,720 SCALE.

Comment (Reserve-Resource): ITEM 1 ESTIMATED BY R. J. MC CRAE, ITEM 2 ESTIMATED BY U. S. BUREAU MINES.

Comment (Workings): DEVELOPED 700 FT DOWN DIP; LOWER END OF DEVELOPED ORE IS LESS THAN 150 FT BELOW SURFACE

References

Reference (Deposit): 1973 RECON CATER, F. W., AND OTHERS, BULL. 1304

Reference (Deposit): DIREXPL YUBA MINING CO.

Reference (Deposit): DIREXPL J. R. SIMPLOT CO.

Reference (Deposit): 1975 COMPILE USBM, MINING ACTIVITY LIST, 1974

Reference (Deposit): DIREXPL BRADLEY MINING CO.

Reference (Production): CATER, F. W., AND OTHERS, 1973, USGS BULL. 1304, 431 P.

Reference (Deposit): CATER, F. W., AND OTHERS, 1973, MINERAL RESOURCES OF THE IDAHO PRIMITIVE AREA AND VICINITY, IDAHO: U. S. GEOLOGICAL SURVEY BULL. 1304, 431 P.

Reference (Deposit): SHENON, P. J., AND ROSS, C. P., 1936, GEOLOGY AND ORE DEPOSITS NEAR EDWARDSBURG AND THUNDER MOUNTAIN, IDAHO: IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 44, 45 P.

Reference (Deposit): USBM, 1975, ACTIVITY OF IDAHO MINING PROPERTIES, 1974, USBM, BOISE, IDAHO, 61 P.

Reference (Deposit): ROSS, C. P., 1927 , ORE DEPOSITS IN THE TERTIARY LAVA IN THE SALMON RIVER MOUNTAINS, IDAHO: IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 25 , 20 P.

Idaho Gold

"Where to Find Gold in Idaho" 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 Idaho. Read more: Where to Find Gold in Idaho.