Kirkland Lease Mine, Humphreys Station, Big Dry Creek Mining District, Fresno County, California, USAi
| Regional Level Types | |
|---|---|
| Kirkland Lease Mine | Mine |
| Humphreys Station | - not defined - |
| Big Dry Creek Mining District | Mining District |
| Fresno County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
36° 56' 20'' North , 119° 24' 45'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Auberry | 2,369 (2011) | 17.0km |
| Shaver Lake | 634 (2011) | 20.2km |
| Centerville | 392 (2011) | 24.0km |
| Minkler | 1,003 (2011) | 24.2km |
| Squaw Valley | 3,162 (2011) | 26.5km |
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 | 38km |
A former Cr occurrence/mine located in sec. 25, T11S, R23E, MDM, about 2.4 miles ESE of Humphreys Station, NW of Watts Valley. MRDS database stated accuracy for this location is 500 meters.
Mineralization is hosted in dunite. The ore body is linear, planar banded streaks. It strikes N45W, dips 60NE, plunges 65S at a width of 0.03 meters and a length of 0.05 meters (sic - MRDS file). Local rocks include ultramafic rocks, chiefly Mesozoic, unit 2 (Western Sierra Nevada and Klamath Mountains).
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 unspecified surface openings.
Analytical data results: Low-grade - 10% 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: | 10043380 |
|---|
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 #0060190145
