Newtown Mining District, El Dorado Co., California, USAi
| Regional Level Types | |
|---|---|
| Newtown Mining District | Mining District |
| El Dorado Co. | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
38° North , 120° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~58km
Locality type:
Köppen climate type:
Location: Newtown is in central El Dorado County 10 miles east of Placerville. It was originally known as Dogtown. Chiefly a placer-mining district, it includes the Camino and Pleasant Valley areas.
Geology: Numerous deposits of auriferous gravels were deposited in the west-trending Tertiary channel of the South Fork of the American River. They were mined during the early days by hydraulicking and drifting, and again by drifting through the 1930's. The lower gravels are quartz-rich and in places contain coarse gold. They are overlain by rhyolite and andesite. Bedrock is slate, schist, and quartzite with thin bands of serpentine. Granodiorite crops out to the north and south.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded from this region.Mineral List
Mineral list contains entries from the region specified including sub-localities3 valid minerals.
Detailed Mineral List:
| ⓘ Antimony Formula: Sb Reference: Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 77. |
| ⓘ Gold Formula: Au Localities: Reported from at least 18 localities in this region. Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |
| ⓘ Quartz Formula: SiO2 Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Antimony | 1.CA.05 | Sb |
| ⓘ | Gold | 1.AA.05 | Au |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| Sb | Antimony | |
| Sb | ⓘ Antimony | Sb |
| Au | Gold | |
| Au | ⓘ Gold | Au |
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A)Lindgren, Waldemar & Henry Ward Turner (1894), Description of the gold belt, California; description of the Placerville sheet: USGS Geol. Atlas, Placerville folio (Folio No. 3) 3 pp.; […(abstract): Jour. Geol.: 4: 248-250 (1896)].
Clark, Wm. B. & D.W. Carlson (1956), Mines and mineral resources of El Dorado County, California: California Journal of Mines and Geology: 52(4): 429-435.
Clark, Wm. B. (1970a) Gold districts of California: California Division Mines & Geology Bulletin 193: 101.
Localities in this Region
- California
- El Dorado Co.
- Newtown Mining District
- Camino
- Badger Hill Mine
- Fossati (Nicolas Fossati; Tunnel)
- Gouge Eye placer
- Henry D. Bacons claim
- Horseshoe Flat placer (Samuel H. Maginess claim)
- Leslie Hydraulic placer
- McMillen Placer Mine
- Mooney placer
- Myers Placer Mine
- Olsen and Donaldson placer
- One Spot Mine (Sailor Jack)
- Reuter and Company placer
- Sailor placer
- U. S. Grant Mine (US Grant Mine; New Deal)
- Unknown Au occurrence [31]
- Unnamed Au placer mine [48]
- Newtown (Dogtown)
- Camino
- Newtown Mining District
- El Dorado Co.
- California
- El Dorado Co.
- Newtown Mining District
- Newtown (Dogtown)
- Old Fort Jim
- Pleasant Valley
- Newtown Mining District
- El Dorado Co.
Other Regions, Features and Areas containing this locality
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