Evans prospect (Oak), Forest, Alleghany Mining District (Forest Mining District), Sierra County, California, USAi
| Regional Level Types | |
|---|---|
| Evans prospect (Oak) | Prospect |
| Forest | - not defined - |
| Alleghany Mining District (Forest Mining District) | Mining District |
| Sierra County | County |
| California | State |
| USA | Country |
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
39° 29' 12'' North , 120° 52' 45'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Downieville | 282 (2011) | 9.2km |
| Pike | 134 (2011) | 11.5km |
| Camptonville | 158 (2011) | 15.0km |
| Washington | 185 (2011) | 15.7km |
| Sierra City | 221 (2011) | 22.8km |
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 | 34km |
Mindat Locality ID:
93253
Long-form identifier:
mindat:1:2:93253:5
GUID (UUID V4):
e3a59435-2929-4e9f-9869-e5ad539a26f4
An apparent Au-Cr occurrence/prospect located in sec. 29, T19N, R10E, MDM, 2.3 km (1.4 miles) WSW of Forest, along the W canyon wall of Lucky Dog Creek (E of the S workings of the Eureka Mine; 2 miles NW of Alleghany), on National Forest land. Owned by Robert Evans (1918- ). MRDS database stated accuracy for this location is 500 meters.
Mineralization is a vein deposit hosted in gabbro and granite. The ore body strikes NW and dips NE. The vein may be continuous with the E branch of the Eureka vein. Many other small veins of irregular attitude occur but mainly with a N strike and W dip. The gabbro is cut by small granite dikes which strike generally N. In some of the smaller dikes are irregular vein-like, segregated deposits of quartz that also contain a little chalcedony. Local rocks include Tertiary pyroclastic and volcanic mudflow deposits, unit 9 (Cascade Range).
Workings include surface and underground openings comprised of adits on both sides of the creek and a 20 foot deep shaft.
Production was 4 long tons of Cr ore.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Chromite Formula: Fe2+Cr3+2O4 |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Quartz var. Chalcedony Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
| ⓘ | Quartz var. Chalcedony | 4.DA.05 | SiO2 |
| ⓘ | 4.DA.05 | SiO2 | |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz var. Chalcedony | SiO2 |
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz var. Chalcedony | SiO2 |
| Si | ⓘ Quartz | SiO2 |
| Cr | Chromium | |
| Cr | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | Iron | |
| Fe | ⓘ Chromite | Fe2+Cr23+O4 |
Other Databases
| Link to USGS MRDS: | 10043624 |
|---|
Other Regions, Features and Areas containing this locality
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.
References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file #0060910241
