Dosch pit (Clark pit), Clarksona, Irish Hill Mining District, Amador County, California, USAi
| Regional Level Types | |
|---|---|
| Dosch pit (Clark pit) | Pit |
| Clarksona | - not defined - |
| Irish Hill Mining District | Mining District |
| Amador County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
38° 22' 38'' North , 120° 58' 23'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Ione | 7,000 (2017) | 4.4km |
| Buena Vista | 429 (2011) | 10.6km |
| Camanche Village | 847 (2011) | 11.9km |
| Drytown | 167 (2011) | 12.5km |
| Amador City | 189 (2017) | 13.8km |
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 | 15km |
| El Dorado County Mineral and Gem Society | Placerville, California | 42km |
| Gold Country Treasure Seekers | Placerville, California | 42km |
| Fossils for Fun Society, Inc. | North Highlands, California | 49km |
| Sacramento Valley Detecting Buffs | North Highlands, California | 49km |
A clay occurrence located in the N½ sec. 15, T6N, R9E, MDM, 0.9 km (0.6 mile) ENE of Clarksona, ESE of Indian Hill (summit) (at the intersection of Sacramento and Irish Hill Roads). Owned & operated by Industrial Minerals, Inc., California (1990). Operated by the Pacific Clay Products Co. (timeframe ?). This locality has been worked since 1864 and is the oldest active clay mine in the state. It was operated by N. Clark until 1946. MRDS database stated accuracy for this location is 100 meters.
Mineralization is a clay deposit. The clays are similar to the bacon clays of the adjacent Airplane pit. but exact correlation was not readily possible. Two to four feet of gravel overlies the Dosch stripping, a clay similar to Bacon No. 2; the Dosch clay below the Dosch stripping, 50 to 60 feet thick, the top 20 feet were being mined. The Dosch stripping is 10 to 12 feet thick. Local rocks include Eocene nonmarine rocks, unit 1 (Northern and Central California).
Workings include surface openings comprised of an open pit.
The clay is used for a variety of ceramic products.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ 'Clay minerals' |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Unclassified | |||
|---|---|---|---|
| ⓘ | 'Clay minerals' | - | |
List of minerals for each chemical element
Other Databases
| Link to USGS MRDS: | 10028090 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- California Central ValleyAccretionary Complex
- Foothills-Wallowa DomainDomain
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file #0060050501
