| Deposit ID | 10048499 |
|---|---|
| MRDS ID | MP00088 |
| Record type | Site |
| Current site name | Mount Si |
| Alternate or previous names | Bald Hornet Claims |
| Geographic coordinates: | -121.70621, 47.51342 (WGS84) |
|---|---|
| Elevation | 1292 |
| Relative position | ABOUT 1.5 MI EAST OF SUMMIT OF MOUNT SI |
Political divisions (FIPS codes)
King(county)
Washington(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Mount Si(quadrangle 1:24,000 scale)
Skykomish River(quadrangle 1:100,000 scale)
Wenatchee(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Snoqualmie(hydrologic unit)
Puget Sound(hydrologic accounting unit)
Puget Sound(hydrologic subregion)
Pacific Northwest(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | Washington | King |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Willamette | 023N}024N | 008E}009E | 01}31 | NE4 (01); S2 (31) | Washington |
| Commodity | Importance |
|---|---|
| Copper | Primary |
| Materials | Type of material |
|---|---|
| Chalcopyrite | Ore |
| Pyrite | Ore |
| Quartz | Gangue |
| Sericite | Gangue |
| Tourmaline | Gangue |
| Host or associated | Associated | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Mafic Intrusive Rock > Diorite | ||||||||
| Rock unit name | Snoqualmie Batholith | ||||||||
| Rock description | Snoqualmie Batholith | ||||||||
| |||||||||
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Hornfels |
| Rock unit name | Western Melange Belt |
| Rock description | Western Melange Belt |
| (1) | -121.70621, 47.51342 |
|---|
| General form | BRECCIA |
|---|
| Development status | Occurrence |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discoverer | Duval Corp |
| Ownership category | Private |
|---|
| Type | Operator |
|---|---|
| Owner | Duval Corp. (1970'S) |
| Type | Owner |
|---|---|
| Owner | Weyerhaeuser Co. |
| First year | 1991 |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | MP00088 |
ASHLEY, R.P., 1991, FIELD EXAM WITH GRANT NEWPORT OF WEYERHAUSER
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 | DEPOSIT HAS BEEN GIVEN THE INFORMAL NAME OF A BRECCIA PIPE CU DEPOSIT, FOR WHICH THERE IS NO PUBLISHED MODEL. QUARTZ-PYRITE-TOURMALINE VEINLETS. TOURMALINE VEINLETS ARE CUT BY LATER QUARTZ VEINLETS. TOURMALINE BRECCIA LOOKS LIKE COLLAPSE FEATURE IN HORNFELS. THERE ARE SEVERAL BRECCIA BODIES IN AREA |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-SEP-1991 | Peterson, Jocelyn A. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.