Empress Mine (Newton; Dull; Mulcahy), Newtown, Grass Valley Mining District, Nevada County, California, USAi
| Regional Level Types | |
|---|---|
| Empress Mine (Newton; Dull; Mulcahy) | Mine |
| Newtown | - not defined - |
| Grass Valley Mining District | Mining District |
| Nevada County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
39° 15' 12'' North , 121° 6' 14'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Rough and Ready | 963 (2011) | 3.8km |
| Grass Valley | 12,944 (2017) | 5.3km |
| Nevada City | 3,152 (2017) | 7.5km |
| Lake Wildwood | 4,991 (2011) | 8.6km |
| Penn Valley | 1,621 (2011) | 9.8km |
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
| Club | Location | Distance |
|---|---|---|
| Nevada County Gem & Mineral Society | Grass Valley, California | 5km |
| Sutter Buttes Gem & Mineral Society | Marysville, California | 44km |
| Feather River Lapidary & Mineral Society | Oroville, California | 49km |
A former lode Au-Ag-Pb-Cu occurrence/mine located in secs. 8 & 17, T16N, R8E, MDM, 0.1 km (0.0 mile) NW of Newtown (4 miles W of Nevada City), on private (patented) land. MRDS database stated accuracy for this location is 100 meters.
Mineralization is a vein deposit. The ore body is 2.44 meters thick. The vein is 2 to 3 feet thick. Local rocks include Mesozoic volcanic rocks, unit 2 (Western Sierra Foothills and Western Klamath Mountains).
Workings include underground openings with an overall depth of 304.8 meters and comprised of an inclined shaft with 6 levels of drifting.
Production data are found in: Logan, Clarence August (1941); Goodwin, Joseph Grant (1957).
Sulfides carried 10 ounces Ag and 1 ounce Au. Au averaged $5 (period values) per ton while Ag was at $1.06 (period values) per ton.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Native Gold Formula: Au |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS MRDS: | 10101224 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Foothills-Wallowa DomainDomain
- Sierra Nevada BatholithVolcanic Arc
USA
- Sierra NevadaMountain Range
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file #0060570238
