White Porphyry group, Cat Town, Cat Town Mining District, Mariposa County, California, USAi
| Regional Level Types | |
|---|---|
| White Porphyry group | - not defined - |
| Cat Town | Town |
| Cat Town Mining District | Mining District |
| Mariposa County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
37° 37' 43'' North , 120° 4' 56'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Bear Valley | 125 (2011) | 7.4km |
| Greeley Hill | 915 (2011) | 13.6km |
| Coulterville | 201 (2011) | 13.7km |
| Midpines | 1,204 (2011) | 17.0km |
| Mariposa | 2,173 (2017) | 19.0km |
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 | 19km |
Mindat Locality ID:
82662
Long-form identifier:
mindat:1:2:82662:3
GUID (UUID V4):
e5f73f40-b04b-4e99-a9d0-d94ec17531b5
A former lode Au mine located in sec. 34, T3S, R17E, MDM, 1.9 km (6,100 feet) SSE of Cat Town, along Solomon Gulch, on Bureau of Land Management wilderness land (Merced River Wilderness Study Area). Operated by F. E. Ryberg (timeframe = ?). MRDS database stated accuracy for this location is 1,000 meters.
Mineralization is a vein/dike deposit hosted in volcanic rock (aphanitic), slate, schist, and chert. The ore body strikes N40-45W and dips 75NE, at a thickness of 15.24 meters and a length of 1,609.3 meters. The deposit crosses the T&R section from the NW to the SE. The dike is 30 to 50 feet thick. Gold occurs in rust-colored pockets in albitite adjacent to quartz stringers & enclosing slaty wall rocks near contact. The ore is apparently confined to a narrow contact zone less than 6 to 7 feet thick, but commonly 3 feet thick. The best ore occurs in the oxidized zone. Local rocks include Jurassic marine rocks, unit 1 (Western Sierra Nevada and Western Klamath Mountains).
Workings include surface and underground openings with an overall depth of 30.48 meters.
In view of the parallel lines on either wall of the albitite dike, which is traceable for over 1 mile, from the length and persistance of the stopes, and the known high-grade of the ore in pockets in this district, indicate that the yield must have been large. The most northerly workings were being operated by Ryberg in September, 1955.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
3 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramGallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Gold | 1.AA.05 | Au |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 9 - Silicates | |||
| ⓘ | Albite | 9.FA.35 | Na(AlSi3O8) |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Albite | Na(AlSi3O8) |
| O | ⓘ Quartz | SiO2 |
| Na | Sodium | |
| Na | ⓘ Albite | Na(AlSi3O8) |
| Al | Aluminium | |
| Al | ⓘ Albite | Na(AlSi3O8) |
| Si | Silicon | |
| Si | ⓘ Albite | Na(AlSi3O8) |
| Si | ⓘ Quartz | SiO2 |
| Au | Gold | |
| Au | ⓘ Gold | Au |
Other Databases
| Link to USGS MRDS: | 10031004 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Calaveras-Baker DomainDomain
USA
- California
- Mother Lode BeltBelt
- Sierra NevadaMountain Range
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0060430290
