Long Ledge No. 2 (Riverview Mine; Pearson property), Long Ledge group, Hog Mountain, Fresno County, California, USAi
| Regional Level Types | |
|---|---|
| Long Ledge No. 2 (Riverview Mine; Pearson property) | - not defined - |
| Long Ledge group | - not defined - |
| Hog Mountain | Mountain |
| Fresno County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
36° 52' 26'' North , 119° 17' 29'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Squaw Valley | 3,162 (2011) | 15.4km |
| Minkler | 1,003 (2011) | 22.3km |
| Centerville | 392 (2011) | 24.1km |
| Shaver Lake | 634 (2011) | 25.7km |
| Orange Cove | 9,598 (2017) | 27.8km |
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 |
|---|---|---|
| Fresno Gem & Mineral Society | Fresno, California | 45km |
A former Cr occurrence/claim/mine located in sec. 19, T12S, R24E, MDM, 2.3 km (1.5 miles) SE of Hog Mountain (coordinates of record) (on the SE end of the mountain), SE of Watts Valley, on National Forest/U.S. Army Corps of Engineers land. MRDS database stated accuracy for this location is 100 meters.
Mineralization is hosted in serpentinite. The ore body(ies) is/are lenticular in shape. Associated rocks include granite. Local rocks include Mesozoic gabbroic rocks, unit 2 (undivided).
The chromite deposits of Watts Valley occur on the eastern limb of a synclinal, NE-plunging, ultramafic sill. The eastern limb, known as Hog Mountain, is a little over 1 mile wide, while the western limb, which forms Red Mountain, averages 3 miles wide. The 2 limbs join to the NW and together form a discontinuous, triangular exposure of peridotite 10 miles long and 8 miles wide across the base.
Workings include surface and underground openings comprised of an open cut, a 50 foot long adit trending S60E, then E for 10 feet, and a winze 35 feet deep located at the end of the adit.
Production data are found in: Rynearson, Garn Arthur (1948).
Production statistics: Year: 1917; ore estimated at ^40% Cr2O3 .
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsGallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| Cr | Chromium | |
| Cr | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | Iron | |
| Fe | ⓘ Chromite | Fe2+Cr23+O4 |
Other Databases
| Link to USGS MRDS: | 10043677 |
|---|
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 ID #0060190263
