Airola Mine (Airola deposit), Angels Camp area, Calaveras County, California, USAi
| Regional Level Types | |
|---|---|
| Airola Mine (Airola deposit) | Mine |
| Angels Camp area | Area |
| Calaveras County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
38° 3' 58'' North , 120° 30' 49'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Angels Camp | 2,677 (2012) | 2.3km |
| Vallecito | 442 (2011) | 4.4km |
| Murphys | 2,213 (2015) | 9.2km |
| Tuttletown | 668 (2011) | 9.5km |
| Columbia | 2,297 (2017) | 10.4km |
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 |
|---|---|---|
| Calaveras Gem & Mineral Society | Angels Camp, California | 2km |
| Amador County Gem & Mineral Society | Sutter Creek, California | 44km |
A Mn occurrence/deposit located in the E½SW¼ sec. 35, T3N, R13E, MDM, 2.2 km (1.4 miles) E of Angels Camp (private lease). Discovered in 1942. Owned by Emma Airola (1974). Operated by John T. Martin (1974). MRDS database stated accuracy for this location is 1,000 meters.
Mineralization is ore in lenses, some of which have been subjected to complex folding and faulting. Wall rocks are phyllites or sericite schist of the Calaveras series. Manganese oxide ore lies in massive meta-chert, in short, stumpy lenses enclosed in schist. Both meta-chert and ore are cut by numerous quartz veins. The unoxidized primary manganese minerals are pink rhodonite and garnet (presumably spessartine). Some porphyritic dikes (3 to 6 inches (7.5 to 15 cm)) cut through enclosing schists and ore bodies. These may be andesitic. Local rocks include pre-Cenozoic metasedimentary and metavolcanic rocks undivided.
Workings data: A considerable amount of development work was done in 1940. The ore was sorted and piled on several dumps at the property, but none was shipped. Idle since then.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ 'Manganese Oxides' |
| ⓘ 'Psilomelane' |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Rhodonite Formula: CaMn3Mn[Si5O15] References: |
| ⓘ Spessartine Formula: Mn2+3Al2(SiO4)3 References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 9 - Silicates | |||
| ⓘ | Spessartine | 9.AD.25 | Mn2+3Al2(SiO4)3 |
| ⓘ | Rhodonite | 9.DK.05 | CaMn3Mn[Si5O15] |
| Unclassified | |||
| ⓘ | 'Psilomelane' | - | |
| ⓘ | 'Manganese Oxides' | - | |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Rhodonite | CaMn3Mn[Si5O15] |
| O | ⓘ Spessartine | Mn32+Al2(SiO4)3 |
| Al | Aluminium | |
| Al | ⓘ Spessartine | Mn32+Al2(SiO4)3 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Rhodonite | CaMn3Mn[Si5O15] |
| Si | ⓘ Spessartine | Mn32+Al2(SiO4)3 |
| Ca | Calcium | |
| Ca | ⓘ Rhodonite | CaMn3Mn[Si5O15] |
| Mn | Manganese | |
| Mn | ⓘ Rhodonite | CaMn3Mn[Si5O15] |
| Mn | ⓘ Spessartine | Mn32+Al2(SiO4)3 |
Other Databases
| Link to USGS MRDS: | 10029136 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Shoofly-Olds Ferry DomainDomain
- Sierra Nevada BatholithVolcanic Arc
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0060090001
Eric, John H. (1955) Geology and mineral deposits of the Angels Camp and Sonora quadrangles, Calaveras and Tuolumne Counties, California. Special Report 41. California Division of Mines p.52 - plate 3
