| Deposit ID | 10047845 |
|---|---|
| MRDS ID | M700173 |
| Record type | Site |
| Current site name | Index Group |
| Alternate or previous names | Index Nos. 1-12 |
| Geographic coordinates: | -122.09536, 46.34398 (WGS84) |
|---|---|
| Elevation | 1103 |
| Location accuracy | 100(meters) |
| Relative position | ABOUT 1 MI NORTHEAST OF TWIN LAKES. 1.5 MI SOUTHWEST OF RYAN LAKE, Accurate Within Claim Area, Probably Near Adit, Accurate Within Claim Area, Probably Near Adit, Accurate Within Claim Area, Probably Near Adit |
Political divisions (FIPS codes)
Skamania(county)
Washington(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Spirit Lake East(quadrangle 1:24,000 scale)
Mount Saint Helens and Vicinity(quadrangle 1:100,000 scale)
Hoquiam(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Lower Cowlitz(hydrologic unit)
Lower Columbia(hydrologic accounting unit)
Lower Columbia(hydrologic subregion)
Pacific Northwest(hydrologic region)
Federal lands
Gifford Pinchot National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Washington | Skamania |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Willamette | 010N | 006E | 17,18,19,20 | SW4 (17); SE4 (18) | Washington |
| Commodity | Importance |
|---|---|
| Copper | Primary |
| Gold | Secondary |
| Silver | Secondary |
| Materials | Type of material |
|---|---|
| Chalcopyrite | Ore |
| Pyrite | Ore |
| Result | 2 SELECT SAMPLES FROM THE ADITS ASSAYED 1.84, 2.10 OZ/TON Au, 1.0, 1.1 OZ/TON Ag, and a trace, 0.2% Cu. (Moen, 1977, p. 26) |
|---|
| 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 | Spirit Lake Pluton | ||||
| Rock description | Spirit Lake Pluton | ||||
| |||||
| (1) | -122.09536, 46.34398 |
|---|
| Type of structure | Local |
|---|---|
| Structure description | Faulting And Brecciation |
| General form | Faulted, brecciated, STRINGERS AND POCKETS) |
|---|
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| District name | St. Helens District - Ryan Lake Area |
|---|
| Type of mineral rights | Patented |
|---|
| Ownership category | National Forest |
|---|---|
| Area name | In Gifford-Pinchot National Forest; Southern Part Of Claim Area Also Within Mount St. Helens National Volcanic Monument |
| Type | Operator |
|---|---|
| Owner | Duval Corp |
| First year | 1980 |
| Type of workings | Underground |
|---|---|
| Name of workings | Main adit on Index Lode no. 6 |
| Length | 70.1M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | M700173 | |
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0530590055 |
HUNTTING, M.T., 1956, INVENTORY OF WASHINGTON MINERALS - PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, P. 77.
LANDES, HENRY, THYNG, W.S., LYON, D.A., AND ROBERTS, MILNOR, 1902, THE METALLIFEROUS RESOURCES OF WASHINGTON, EXCEPT IRON: WASHINGTON GEOLOGICAL SURVEY ANNUAL REPORT FOR 1901, V. 1, PT. 2, P. 134.
MOEN, W.S., 1977, ST. HELENS AND WASHOUGAL MINING DISTRICTS OF THE SOUTHERN CASCADES OF WASHINGTON: WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES INFORMATION CIRCULAR 60, P. 17, 26.
| Subject category | Comment text |
|---|---|
| Deposit | SEE ALSO MRDS RECORD M700154 |
| Deposit | WELL-DEFINED VEINS WERE NOT DISCOVERED ON THE PROPERTY WHEN THE ORIGINAL UNDERGROUND WORK WAS UNDERTAKEN. DEPOSIT MAY BE PERIPHERAL PART OF PORPHYRY COPPER DEPOSIT RATHER THAN ASSOCIATED POLYMETALLIC VEINS. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-NOV-81 | Caress, Mary E. (Evarts, Russ) | U.S. Geological Survey | |
| Updater | 01-NOV-92 | Peterson, Jocelyn A. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.