Little Myrtle Lake Area

The Little Myrtle Lake Area is a copper mine located in King county, Washington at an elevation of 4,400 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: Little Myrtle Lake Area
Secondary: Upper Myrtle Lake
Secondary: Mudge Claims

Commodity

Primary: Copper

Location

State: Washington
County: King

Land Status

Land ownership: National Wilderness
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 Alpine Lakes Wilderness In Mount Baker-Snoqualmie National Forest

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
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

Model Name: Polymetallic veins

Orebody

Form: VEIN

Structure

Type: R
Description: Northwest-Trending Shear Zones

Type: L
Description: Shear Zone

Alterations

Alteration Type: L
Alteration Text: Host Rocks Said To Be Altered But Character Of Alteration Not Described

Rocks

Name: Diorite
Role: Host
Age Type: Host Rock Unit
Age Young: Miocene

Name: Diorite
Role: Host
Age Type: Host Rock
Age Young: Miocene

Analytical Data

Analytical Data: SAMPLES CONTAIN MAXIMUM OF 0.025% CU

Materials

Ore: Pyrrhotite
Ore: Pyrite
Gangue: Quartz

Comments

Comment (Deposit): AREA SAID TO HAVE POTENTIAL FOR THE DISCOVERY OF AG, CU, AND MO AND MAY BE AN EXTENSION OF THE MIDDLE FORK ZONE SYSTEM OF PORPHYRY DEPOSITS

References

Reference (Analytical Data): GUALTIERI AND OTHERS, 1975

Reference (Deposit): TABOR, R.W., FRIZZELL, V.A., JR., BOOTH, D.B., WHETTEN, J.T., WAITT, R.B., JR., AND ZARTMAN, R.E., 1982, PRELIMINARY GEOLOGIC MAP OF THE SKYKOMISH RIVER 1:100,000 QUADRANGLE, WASHINGTON: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 82-747, SCALE 1:100,000.

Reference (Deposit): GRANT, A.R., 1976, REPORT OF EVALUATION, MINERAL RESOURCE ANALYSIS STUDY ON UNITED STATES FOREST SERVICE LAND, STATE OF WASHINGTON: PREPARED FOR U.S. FOREST SERVICE - REGION 6, CONTRACT NO. 004724N, P. 24.

Reference (Deposit): GUALTIERI, J.L., THURBER, H.K., MILLER, M.S., MCMAHAN, A.B., AND FEDERSPIEL, F.F., 1975, MINERAL RESOURCES OF ADDITIONS TO THE ALPINE LAKES STUDY AREA, CHELAN, KING, AND KITTITAS COUNTIES, WASHINGTON: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 75-3, P. 136-138.

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.