| Abstract: | Lignite mining in east and east-central Texas is increasing in response to increased energy needs throughout the State. Associated with the increase in mining activities is a greater need to know the effects of mining activities on the water quantity and quality of near surface aquifers. The near surface lignite beds mined at the Big Brown Lignite Mine are from the Calvert Bluff Formation of the Wilcox Group of Eocene age, which is a minor aquifer generally having water suitable for all uses, in eastern Freestone County, Texas. One of the potential hydrologic effects of surface coal mining is a change in the quality of groundwater associated with replacement of aquifer materials by mine spoils. The purpose of this report is to compile and categorize geologic, mineralogic, geochemical, and hydrologic data for the Big Brown Lignite Mine and surrounding area in east-central Texas. Included are results of paste-extract analyses, constituent concentrations in water from batch-mixing experiments, sulfur analyses, and minerals or mineral groups detected by X-ray diffraction in 12 spoil material samples collected from 3 locations at the mine site. Also, common-constituent and trace-constituent concentrations in water from eight selected wells, located updip and downdip from the mine, are presented. Dissolved solids concentrations in water from batch-mixing experiments vary from 12 to 908 mg/L. Water from selected wells contains dissolved solids concentrations ranging from 75 to 510 mg/L. (Author ‘s abstract) |
| Genre: | USGS Numbered Series |
| ProdID: | 13391 |
| Citation Author: | Dorsey, M. E. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | iv, 17 p. :ill., maps ;28 cm. |
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| Citation Publisher: | U.S. Geological Survey, |
| Citation Series: | Open-File Report |
| Citation Series Code: | OFR |
| Citation Series Number: | 85-338 |
| Citation Search Results Text: | Hydrologic and geochemical data for the Big Brown lignite mine area, Freestone County, Texas; 1985; OFR; 85-338; Dorsey, M. E. |
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| Citation Year: | 1985 |
| Type: | citation/reference |
| Text: | Hydrologic and geochemical data for the Big Brown lignite mine area, Freestone County, Texas; 1985; OFR; 85-338; Dorsey, M. E. |
| URL (THUMBNAIL): | http://pubs.usgs.gov/of/1985/0338/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/of/1985/0338/report.pdf |
| URL (PLATE): | http://pubs.usgs.gov/of/1985/0338/plate-1.pdf |
| URL (PLATE): | http://pubs.usgs.gov/of/1985/0338/plate-2.pdf |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Geological Survey, |
