| Deposit ID | 10007495 |
|---|---|
| MRDS ID | C011368 |
| Record type | Site |
| Current site name | Rich Hill |
| Geographic coordinates: | -121.04492, 39.20489 (WGS84) |
|---|---|
| Elevation | 799 |
| Relative position | 1/4 MI. SE GRASS VALLEY |
Political divisions (FIPS codes)
Nevada(county)
California(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Grass Valley(quadrangle 1:24,000 scale)
Yuba City(quadrangle 1:100,000 scale)
Chico(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Upper Bear(hydrologic unit)
Lower Sacramento(hydrologic accounting unit)
Sacramento(hydrologic subregion)
California(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | California | Nevada |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Mount Diablo | 016N | 008E | 35 | California |
| Commodity | Importance |
|---|---|
| Gold | Primary |
| Lead | Secondary |
| Zinc Critical | Secondary |
| Arsenic Critical | Tertiary |
| Materials | Type of material |
|---|---|
| Gold | Ore |
| Quartz | Gangue |
| Host or associated | Host |
|---|---|
| Rock type | Plutonic Rock > Mafic Intrusive Rock > Diorite > Diabase |
| (1) | -121.04492, 39.20489 |
|---|
| Strike | NW |
|---|---|
| Dip | 35 SW |
| Thickness | 0.3M |
| Depth to top | 0M |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Type of workings | Underground |
|---|---|
| Length | 579.12M |
| Overall depth | 304.8M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | C011368 |
JOHNSTON, W. D., 1940 , THE GOLD QUARTZ VEINS OF GRASS VALLEY, CALIFORNIA: US GEOLOGICAL SURVEY PROFESSIONAL PAPER 194 , P. 90 - 91 , PL. 36 , 37
| Subject category | Comment text |
|---|---|
| Deposit | VEIN AND SEAMS, AVG. 1 FT. THICK COMB, MASSIVE AND SHEARED QUARTZ PRESENT. |
| Deposit | PART OF EMPIRE HILL CLAIM ; INFO.SRC : 1 PUB LIT |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-FEB-1979 | Bowman, J. And Albers, J. | U.S. Geological Survey | PARSED HOST ROCK AND ASSOCIATED ROCK INFORMATION FROM OLD SINGLE VALUED FIELD TO NEW MULTIVALUED FIELD |
| Editor | 27-APR-1995 | Mosier, Dan | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
These are landing pages for further research — the state agencies don't currently expose per-mine deep links.