Poverty Hill Mining District, Sierra Co., California, USAi
| Regional Level Types | |
|---|---|
| Poverty Hill Mining District | Mining District |
| Sierra Co. | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
39° 37' 21'' North , 121° 0' 24'' West
Latitude & Longitude (decimal):
Locality type:
KΓΆppen climate type:
Location and History: This district is in western Sierra County, 10 miles NW of Downieville and 5 miles S of La Porte. The Port Wine district is to the NE, and the Brandy City district is to the SSW. Poverty Hill district includes the Scales and Mount Pleasant areas. The area was mined by hydraulicking and drifting during and after the gold rush. Mining here again during the 1930's and early 1940's included an attempt to work the Poverty Hill pit with a bucket-line dredge.
Geology: The main channel of the Tertiary North Fork of the Yuba River, or La Porte channel, enters this district from the N and continues S and SW to the Brandy City and Indian Hill districts. The Port Wine channel, a branch of the La Porte channel, enters the area from the NE at Scales. This smaller branch channel parallels the main channel for some miles. At the Poverty Hill pit, the channel is up to 1,500 feet wide and 150 feet deep. The lower "blue" gravels are quartz-rich and cemented in places. There are a number of large boulders. At Scales the channel is similar. Bedrock consists of slate, quartzite, amphibolite and serpentine. Lindgren estimated in 1911 that, at Poverty Hill, 2.25 million cubic yards had been removed and 5 million cubic yards were ultimately available, while at Scales and Mt. Pleasant, 4.05 million cubic yards had been excavated and 60 million cubic yards were ultimately available.
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-localities4 valid minerals.
Detailed Mineral List:
| β Albite Formula: Na(AlSi3O8) Reference: Hietanen, Anna and Erd, R.C. (1978), Ferroaxinites from the Feather River area, northern California, and from the McGrath and Russian Mission quadrangles, Alaska. USGS Jour. Res.: 6: 605; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 508. |
| β Axinite-(Fe) Formula: Ca2Fe2+Al2BSi4O15OH Description: Occurs as fracture fillings in brecciated rock. Reference: Hietanen, Anna and Erd, R.C. (1978), Ferroaxinites from the Feather River area, northern California, and from the McGrath and Russian Mission quadrangles, Alaska. USGS Jour. Res.: 6: 605; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 508. |
| β Gold Formula: Au Localities: Reported from at least 6 localities in this region. Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |
| β Quartz Formula: SiO2 Locality: Unidentified Au mine [20], Union Hill, Poverty Hill Mining District, Sierra Co., California, USA 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 | |||
|---|---|---|---|
| β | Gold | 1.AA.05 | Au |
| Group 4 - Oxides and Hydroxides | |||
| β | Quartz | 4.DA.05 | SiO2 |
| Group 9 - Silicates | |||
| β | Albite | 9.FA.35 | Na(AlSi3O8) |
| β | Axinite-(Fe) | 9.BD.20 | Ca2Fe2+Al2BSi4O15OH |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | β Axinite-(Fe) | Ca2Fe2+Al2BSi4O15OH |
| B | Boron | |
| B | β Axinite-(Fe) | Ca2Fe2+Al2BSi4O15OH |
| O | Oxygen | |
| O | β Quartz | SiO2 |
| O | β Axinite-(Fe) | Ca2Fe2+Al2BSi4O15OH |
| O | β Albite | Na(AlSi3O8) |
| Na | Sodium | |
| Na | β Albite | Na(AlSi3O8) |
| Al | Aluminium | |
| Al | β Axinite-(Fe) | Ca2Fe2+Al2BSi4O15OH |
| Al | β Albite | Na(AlSi3O8) |
| Si | Silicon | |
| Si | β Quartz | SiO2 |
| Si | β Axinite-(Fe) | Ca2Fe2+Al2BSi4O15OH |
| Si | β Albite | Na(AlSi3O8) |
| Ca | Calcium | |
| Ca | β Axinite-(Fe) | Ca2Fe2+Al2BSi4O15OH |
| Fe | Iron | |
| Fe | β Axinite-(Fe) | Ca2Fe2+Al2BSi4O15OH |
| Au | Gold | |
| Au | β Gold | Au |
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A)Turner, Henry Ward (1897), Description of the gold belt: description of the Downieville sheet: USGS Geol. Atlas Downieville folio (Folio No. 37), 8 pp.
Lindgren, Waldemar (1911), The Tertiary gravels of the Sierra Nevada of California: USGS Professional Paper 73, 226 pp.: 104-108.
MacBoyle, Errol (1920b), Sierra County, Poverty Hill mining district, California Mining Bureau. (Report 16), 144 pp.: 16: 23-26.
Averill, Charles V. (1942), Sierra County, Poverty Hill properties, California Division of Mines (Report 38): 38: 35-37.
Clark, Wm. B. (1970a) Gold districts of California: California Division Mines & Geology Bulletin 193: 111.
Localities in this Region
- California
- Sierra Co.
- Poverty Hill Mining District
- Sierra Co.
- California
- Sierra Co.
- Poverty Hill Mining District
- Poverty Hill (Poverty Hill lookout)
- Scales
- Union Hill
- Poverty Hill Mining District
- Sierra Co.
Other Regions, Features and Areas containing this locality
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