McCreary Ranch, Llanada, Central San Benito Mining District, San Benito County, California, USAi
| Regional Level Types | |
|---|---|
| McCreary Ranch | Ranch |
| Llanada | - not defined - |
| Central San Benito Mining District | Mining District |
| San Benito County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
36° 40' 58'' North , 121° 0' 42'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Tres Pinos | 476 (2011) | 30.0km |
| Ridgemark | 3,016 (2011) | 34.6km |
| Hollister | 37,462 (2017) | 39.5km |
| Soledad | 25,003 (2017) | 40.1km |
| Gonzales | 8,473 (2017) | 43.3km |
A Mn occurrence located in the S½ sec. 29, T14S, R9E MDM, 11.8 km (7.3 miles) NW of Llanada, N of Antelope Creek, on privately leased land. Discovered in 1943. Operated by R. R. Stephenson, California (1950). MRDS database stated accuracy for this location is 500 meters.
The ore body is 0.61 meter thick. The ore is enclosed in massive white and pale green chert containing Mn oxide stains with cross-cutting quartz veins up to 2 inches (5 cm) thick. Some ore occurs in irregular pockets. The massive chert may contain some bementite or neotocite and has a general strike of N35E, dipping 40NW at the easterly cut. The chert is in contact with greenstone. The ore is chiefly hard, blue-black psilomelane, with some soft, black oxide, hematite stains and some patches of cellular silica. Local rocks include rocks of the Franciscan Complex, unit 1 (Coast Ranges).
Workings include unspecified surface openings.
Analytical data results: Ore grade is 54% Mn, 1.3% Fe and 2.5% silica.
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Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
Rock Types Recorded
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Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ 'Psilomelane' |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Unclassified | |||
|---|---|---|---|
| ⓘ | 'Psilomelane' | - | |
List of minerals for each chemical element
Other Databases
| Link to USGS MRDS: | 10095183 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Coast MountainsMountain Range
North America PlateTectonic Plate
- California Coast RangesAccretionary Complex
- Franciscan DomainDomain
USA
- California
- Diablo RangeMountain Range
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