Dolphin Mine

The Dolphin Mine is a copper mine located in Kittitas county, Washington at an elevation of 5,801 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

Name: Dolphin Mine

State:  Washington

County:  Kittitas

Elevation: 5,801 Feet (1,768 Meters)

Commodity: Copper

Lat, Long: 47.445, -120.97806

Map: View on Google Maps

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.


Satelite image of the Dolphin Mine

Dolphin Mine MRDS details

Site Name

Primary: Dolphin Mine
Secondary: Bonanza


Commodity

Primary: Copper
Tertiary: Silver
Tertiary: Gold
Tertiary: Cobalt
Tertiary: Iron


Location

State: Washington
County: Kittitas


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: In Wenatchee National Forest


Holdings

Not available


Workings

Type: Underground


Ownership

Owner Name: Phil Denny
Home Office: Seattle, Wa.
Years: 1951 -


Production

Year: 1917
Time Period: 1905-1917
Material type: ORE
Description: Cp_Grade: ^6% Cu


Deposit

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


Physiography

General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Northern Cascade Mountains


Mineral Deposit Model

Not available


Orebody

Form: DISSEMINATED


Structure

Not available


Alterations

Alteration Type: L
Alteration Text: Silicification


Rocks

Name: Peridotite
Role: Host
Age Type: Host Rock Unit
Age Young: Late Cretaceous

Name: Peridotite
Role: Host
Age Type: Host Rock
Age Young: Late Jurassic


Analytical Data

Not available


Materials

Ore: Pyrite
Ore: Chalcopyrite
Gangue: Quartz
Gangue: Serpentine


Comments

Comment (Workings): SHAFT AND THREE ADITS

Comment (Location): ON SOUTHEAST SLOPE OF MT. HAWKINS

Comment (Deposit): SILICIFIED ZONE. THE TYPE OF DEPOSIT IS UNKNOWN

Comment (Geology): INGALLS COMPLEX IS AN OPHIOLITE


References

Reference (Deposit): HUNTTING, M.T., 1956, INVENTORY OF WASHINGTON MINERALS - PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V.1, P. 60.

Reference (Deposit): DERKEY, R.E., JOSEPH, N.L., AND LASMANIS, RAYMOND, 1990, METAL MINES OF WASHINGTON - PRELIMINARY REPORT: WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES OPEN-FILE REPORT 90-18, P. 129.


Washington Gold

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"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.