Brown and Moore prospect, Sugarloaf Hill, Glenn County, California, USAi
| Regional Level Types | |
|---|---|
| Brown and Moore prospect | Prospect |
| Sugarloaf Hill | Hill |
| Glenn County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
39° 26' 45'' North , 122° 35' 21'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
A former Mn mine located in the N½ sec. 1, T18N, R7W, MDM, 2.4 km (7,900 feet) WNW of Sugarloaf Hill, on National Forest land. Owned by Brown and Moore Ranch, California (1974). Operated by Alex Brown. MRDS database stated accuracy for this location is 1,000 meters.
The ore body strikes N80E to N80W and dips 45 to 65S at a width of 3.05 meters. The ore is manganiferous chert with some pockets of low-grade siliceous black oxide. The ore would probably not run over 5-10% Mn. The pockets of siliceous black oxide (pyrolusite and psilomelane) might run 35% Mn. The ore is overlain by sandstone and underlain by well-bedded green chert. Local rocks include rocks of the Franciscan melange.
Workings includes surface openings comprised of an open cut 300 feet long and averaging 14 feet wide.
There is little hope that an ore body might be found.
Several carloads of ore were produced in 1943.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ 'Psilomelane' |
| ⓘ Pyrolusite Formula: Mn4+O2 References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Pyrolusite | 4.DB.05 | Mn4+O2 |
| Unclassified | |||
| ⓘ | 'Psilomelane' | - | |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Pyrolusite | Mn4+O2 |
| Mn | Manganese | |
| Mn | ⓘ Pyrolusite | Mn4+O2 |
Other Databases
| Link to USGS MRDS: | 10030499 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Coast MountainsMountain Range
North America PlateTectonic Plate
- California Coast RangesAccretionary Complex
- Franciscan DomainDomain
- Round Valley BasinBasin
USA
- California
- Glenn County
- Coastal RangeMountain Range
- Glenn County
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0060210003
