| Deposit ID | 10095361 |
|---|---|
| MRDS ID | M025915 |
| Record type | Site |
| Current site name | Index Bornite Prospect |
| Alternate or previous names | Index |
| Related records | 10302036 |
| Geographic coordinates: | -121.49815, 47.81675 (WGS84) |
|---|---|
| Elevation | 610 |
| Location accuracy | 1000(meters) |
| Relative position | ABOUT 3 MI EAST OF INDEX, Estimated At Common Section Boundary Along Lewis Creek |
Political divisions (FIPS codes)
Snohomish(county)
Washington(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Baring(quadrangle 1:24,000 scale)
Skykomish River(quadrangle 1:100,000 scale)
Wenatchee(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Skykomish(hydrologic unit)
Puget Sound(hydrologic accounting unit)
Puget Sound(hydrologic subregion)
Pacific Northwest(hydrologic region)
Federal lands
Mt. Baker-Snoqualmie National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Washington | Snohomish |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Willamette | 026N | 010E | 22,23 | Washington |
| Commodity | Importance |
|---|---|
| Copper | Primary |
| Silver | Primary |
| Materials | Type of material |
|---|---|
| Bornite | Ore |
| Chalcocite | Ore |
| Chalcopyrite | Ore |
| Calcite | Gangue |
| Quartz | Gangue |
| Result | ASSAYS GAVE 11.1-58.9% CU, 3.8-8.6 OZ/TON AG (PRESUMABLY THESE WERE HIGH-GRADE SAMPLES) |
|---|
| Model code | 85 |
|---|---|
| USGS model code | 22c |
| Deposit model name | Polymetallic veins |
| Mark3 model number | 46 |
| Host or associated | Host |
|---|---|
| Rock type | Plutonic Rock > Mafic Intrusive Rock > Diorite |
| Rock unit name | Index Batholith; |
| Rock description | Index Batholith; |
| (1) | -121.49815, 47.81675 |
|---|
| Type of structure | Local |
|---|---|
| Structure description | Intense Fracturing |
| General form | VEINLETS |
|---|---|
| Strike | N65E |
| Dip | 70SE |
| Development status | Occurrence |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| District name | Index District |
|---|
| Ownership category | National Forest |
|---|---|
| Area name | Probably At Least Partly Within Mount Baker-Snoqualmie National Forest |
| Type | Owner |
|---|---|
| Owner | Index Bornite Copper Mining Co. |
| First year | 1917 |
| Type of workings | Surface/Underground |
|---|---|
| Length | 213.36M |
| Overall depth | 21.34M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | M025915 |
HUNTTING, M.T., 1956, INVENTORY OF WASHINGTON MINERALS - PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, P. 86.
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.
BROUGHTON, W.A., 1942, INVENTORY OF MINERAL PROPERTIES IN SNOHOMISH COUNTY, WASHINGTON: WASHINGTON DIVISION OF MINES AND GEOLOGY REPORT OF INVESTIGATIONS 6, P. 17.
| Subject category | Comment text |
|---|---|
| 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 |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-AUG-85 | Andrews, David H. (Lawson, William A.) | U.S. Geological Survey | |
| Updater | 01-DEC-91 | Peterson, Jocelyn A. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.