| Deposit ID | 10036933 |
|---|---|
| MRDS ID | M025906 |
| Record type | Site |
| Current site name | Helena Prospect |
| Geographic coordinates: | -121.53677, 47.83203 (WGS84) |
|---|---|
| Elevation | 762 |
| Location accuracy | 1000(meters) |
| Relative position | ABOUT 1 MI NORTHEAST OF INDEX, Estimated Near Center Quarter Section At Given Elevation |
Political divisions (FIPS codes)
Snohomish(county)
Washington(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Index(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)
| Country | State | County |
|---|---|---|
| United States | Washington | Snohomish |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Willamette | 027N | 010E | 16 | NW4 | Washington |
| Commodity | Importance |
|---|---|
| Copper | Primary |
| Materials | Type of material |
|---|---|
| Bornite | Ore |
| Chalcopyrite | Ore |
| Pyrite | Ore |
| Calcite | Gangue |
| Quartz | Gangue |
| 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) | -121.53677, 47.83203 |
|---|
| General form | VEIN |
|---|---|
| Strike | N45E |
| Dip | STEEPLY N |
| Thickness | 1.22M |
| Development status | Occurrence |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| District name | Index District |
|---|
| Type | Owner |
|---|---|
| Owner | Cornwall, William |
| Home office | Index, Wa. |
| First year | 1912 |
| Type of workings | Surface/Underground |
|---|---|
| Length | 77.72M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | M025906 |
HUNTTING, M.T., 1956, INVENTORY OF WASHINGTON MINERALS - PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, P. 85.
BROUGHTON, W.A., 1942, INVENTORY OF MINERAL PROPLERTIES IN SNOHOMISH COUNTY, WASHINGTON: WASHINGTON DIVISION OF MINES AND GEOLOGY REPORT OF INVESTIGATIONS 6, P. 17.
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.
| Subject category | Comment text |
|---|---|
| Deposit | 4-FT-WIDE SHEAR ZONE CONSISTS OF 1-IN.-WIDE SULFIDE BANDS ALTERNATING WITH GRANODIORITE |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-AUG-85 | Andrews, David H. (Lawson, William A.) | U.S. Geological Survey | |
| Updater | 01-MAY-92 | Peterson, Jocelyn A. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.