Brushy Canyon deposits, Round Hills, Cathey Mining District (Cathay Mining District), West Belt, Mariposa County, California, USAi
| Regional Level Types | |
|---|---|
| Brushy Canyon deposits | Group of Deposits |
| Round Hills | Group of Hills |
| Cathey Mining District (Cathay Mining District) | Mining District |
| West Belt | - not defined - |
| Mariposa County | County |
| California | State |
| USA | Country |
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
37° 20' 53'' North , 120° 4' 2'' West
Latitude & Longitude (decimal):
Type:
Group of Deposits
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Catheys Valley | 825 (2011) | 9.8km |
| Mariposa | 2,173 (2017) | 17.6km |
| Bootjack | 960 (2011) | 20.6km |
| Le Grand | 1,659 (2011) | 20.8km |
| Planada | 4,584 (2011) | 23.1km |
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 |
|---|---|---|
| Mariposa Gem & Mineral Club | Mariposa, California | 18km |
A former mica mine located in secs. 1 & 2, T7S, R17E, MDM, 4.8 km (3.0 miles) SE of Round Hills, S of Brushy Canyon and N of the Pocahontas Mine (2 miles N, and slightly W of, the White Rock school). MRDS database stated accuracy for this location is 1,000 meters.
Mineralization is a mica deposit. Local rocks include Jurassic marine rocks, unit 1 (Western Sierra Nevada and Western Klamath Mountains).
Workings include surface openings comprised of a main quarry on mica schist in a zone 15 to 20 feet wide and 85 feet long, and 20 to 30 feet deep, plus other small quarries and pis.
There was a small, intermittent production of the schist in the 1930's and 1940's, principally for use as a lubricant in the manufacture of automobile tires. So far as is known, no production since 1946.
Cu mines exist very close to secs. 1 & 2. The pits and quarries expose a considerable tonnage of uniform rock in which quartz is the only major mineral other than muscovite. Several million tons of material could be developed.
Mineralization is a mica deposit. Local rocks include Jurassic marine rocks, unit 1 (Western Sierra Nevada and Western Klamath Mountains).
Workings include surface openings comprised of a main quarry on mica schist in a zone 15 to 20 feet wide and 85 feet long, and 20 to 30 feet deep, plus other small quarries and pis.
There was a small, intermittent production of the schist in the 1930's and 1940's, principally for use as a lubricant in the manufacture of automobile tires. So far as is known, no production since 1946.
Cu mines exist very close to secs. 1 & 2. The pits and quarries expose a considerable tonnage of uniform rock in which quartz is the only major mineral other than muscovite. Several million tons of material could be developed.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Muscovite Formula: KAl2(AlSi3O10)(OH)2 Description: Occurs in a muscovite-quartz schist. References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 9 - Silicates | |||
|---|---|---|---|
| ⓘ | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | Oxygen | |
| O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | Aluminium | |
| Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | Silicon | |
| Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| K | Potassium | |
| K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
Other Databases
| Link to USGS MRDS: | 10031050 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Foothills-Wallowa DomainDomain
- Sierra Nevada BatholithVolcanic Arc
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 ID #0060430364
