Perini deposit (Perini Peyton et al lease), Volcano, Volcano Mining District, Amador County, California, USAi
| Regional Level Types | |
|---|---|
| Perini deposit (Perini Peyton et al lease) | Deposit |
| Volcano | Town |
| Volcano Mining District | Mining District |
| Amador County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
38° 25' 17'' North , 120° 37' 36'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Red Corral | 1,413 (2017) | 2.1km |
| Volcano | 115 (2017) | 2.4km |
| Pine Grove | 2,219 (2011) | 3.0km |
| Pioneer | 1,094 (2011) | 4.9km |
| West Point | 674 (2011) | 9.0km |
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 |
|---|---|---|
| Amador County Gem & Mineral Society | Sutter Creek, California | 16km |
| El Dorado County Mineral and Gem Society | Placerville, California | 37km |
| Gold Country Treasure Seekers | Placerville, California | 37km |
| Calaveras Gem & Mineral Society | Angels Camp, California | 40km |
A former Mn occurrence/mine located in the NW¼ sec. 35, T7N, R12E, MDM, 2.4 km (1.5 miles) S of Volcano and 2.9 km (1.8 miles) ENE of Pine Grove, along the South Branch Sutter Creek, on private lane (private lease). Discovered in 1942. Owned by Benjamino Pereni, California (<1953-1974). Operated by Lee Peyton, California (1974). MRDS database stated accuracy for this location is 1,000 meters.
The ore body strikes N15E and dips steeply E at a thickness of 4.57 meters. Pockets 1 to 3 feet thick of psilomelane with pyrolusite and rhodonite are enclosed in an 8 foot wide band of massive meta-chert. The meta-chert is recrystallized, fine-grained quartzite. It is enclosed in quartz-mica schists, some of which resemble meta-tuffs. Small quartz veinlets cut through the meta-chert. Local rocks include Paleozoic marine rocks, undivided, unit 4 (Western Sierra Nevada).
Workings include surface and underground openings comprised of a 74 foot shaft with a 250 foot crosscut on the 40 foot level, plus a small shaft and several extensive bulldozer cuts.
Less than 1 carload of Mn ore was mined and shipped during WWI. During WWII several carloads of ore of unknown grade were mined and shipped.
Analytical data results: Ore is 10 to 40% Mn.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ 'Psilomelane' |
| ⓘ Pyrolusite Formula: Mn4+O2 References: |
| ⓘ Rhodonite Formula: CaMn3Mn[Si5O15] References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Pyrolusite | 4.DB.05 | Mn4+O2 |
| Group 9 - Silicates | |||
| ⓘ | Rhodonite | 9.DK.05 | CaMn3Mn[Si5O15] |
| Unclassified | |||
| ⓘ | 'Psilomelane' | - | |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Pyrolusite | Mn4+O2 |
| O | ⓘ Rhodonite | CaMn3Mn[Si5O15] |
| Si | Silicon | |
| Si | ⓘ Rhodonite | CaMn3Mn[Si5O15] |
| Ca | Calcium | |
| Ca | ⓘ Rhodonite | CaMn3Mn[Si5O15] |
| Mn | Manganese | |
| Mn | ⓘ Pyrolusite | Mn4+O2 |
| Mn | ⓘ Rhodonite | CaMn3Mn[Si5O15] |
Other Databases
| Link to USGS MRDS: | 10109110 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Shoofly-Olds Ferry 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 #0060050009
