The Index Bornite Prospect is a silver and copper mine located in Snohomish county, Washington at an elevation of 2,001 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
Elevation: 2,001 Feet (610 Meters)
Commodity: Silver, Copper
Lat, Long: 47.81694, -121.49694
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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.
Index Bornite Prospect MRDS details
Site Name
Primary: Index Bornite Prospect
Secondary: Index
Commodity
Primary: Silver
Primary: Copper
Location
State: Washington
County: Snohomish
District: Index 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: Probably At Least Partly Within Mount Baker-Snoqualmie National Forest
Holdings
Not available
Workings
Type: Surface/Underground
Ownership
Owner Name: Index Bornite Copper Mining Co.
Years: 1917 -
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: VEINLETS
Structure
Type: L
Description: Intense Fracturing
Alterations
Alteration Type: L
Alteration Text: Potassic (Biotite). Volcanic Rocks Intensely Pyritized And Hornfelsed. Intrusion Is Pyritized.
Rocks
Not available
Analytical Data
Analytical Data: ASSAYS GAVE 11.1-58.9% CU, 3.8-8.6 OZ/TON AG (PRESUMABLY THESE WERE HIGH-GRADE SAMPLES)
Materials
Ore: Bornite
Ore: Chalcopyrite
Ore: Chalcocite
Gangue: Calcite
Gangue: Quartz
Comments
Comment (Location): ON LEWIS CREEK
Comment (Deposit): ALONG CONTACT OF SNOQUALMIE BATHOLITH AND TERTIARY VOLCANIC ROCKS. MAY BE HIGH-LEVEL REPRESENTATION OF POSSIBLE PORPHYRY SYSTEM. MINERALIZED AREA COVERS 1.5 SQUARE MI. SULFIDE MINERALS OCCUR AS IMPREGNATIONS AND BANDS TO 4 IN. WIDE IN MINERALIZED SHEAR ZONE
Comment (Workings): SHAFT, 2 ADITS
References
Reference (Deposit): BROUGHTON, W.A., 1942, INVENTORY OF MINERAL PROPERTIES IN SNOHOMISH COUNTY, WASHINGTON: WASHINGTON DIVISION OF MINES AND GEOLOGY REPORT OF INVESTIGATIONS 6, P. 17.
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. 47.
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. 86.
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.
