Coal Geology of the Paleocene-Eocene Calvert Bluff Formation (Wilcox Group) and the Eocene Manning Formation (Jackson Group) in east-central Texas
Edited by P.D. Warwick and S.S. Crowley
U.S. Geological Survey Open-File Report 95-595
| Samples | |||||||
| Maceral | A1.1.1 | A1.1.2 | A1.1.3 | A1.1.4 | A1.2.1 | A1.2.2 | A1.2.3 |
| Liptinites | |||||||
| Sporinite.................... | 2 | 2 | 2 | 1 | 2 | 2 | 1 |
| Cutinite...................... | T | T | T | T | T | 0 | 1 |
| Res. in htel................. | T | 0 | 0 | T | 0 | 0 | 0 |
| Res. in det.................. | 1 | 1 | 1 | 1 | 1 | 1 | T |
| Suberinite................... | 0 | T | 0 | 0 | T | 0 | 0 |
| Exsudatinite................ | T | T | 0 | 1 | 0 | T | 1 |
| Bituminite................... | T | 0 | T | T | 1 | 1 | 1 |
| Fluorinite.................... | 0 | 1 | 0 | T | T | T | T |
| Alginite...................... | T | 1 | T | T | 1 | 1 | T |
| Liptodetrinite.............. | 2 | 3 | 2 | 2 | 3 | 1 | 1 |
| Fluor. Clays................ | 0 | T | T | T | T | T | T |
| Total: | 5 | 8 | 5 | 5 | 8 | 6 | 5 |
| Huminites (Crypto-) | |||||||
| Humotelinite............... | 28 | 26 | 13 | 17 | 14 | 23 | 22 |
| Eucorpo. in htel.......... | 2 | 1 | T | 1 | 1 | 2 | 2 |
| Poricorpo. in htel........ | 3 | 1 | T | 1 | T | 8 | 1 |
| Eugelinite.................... | 54 | 57 | 72 | 70 | 69 | 53 | 65 |
| Porigelinite.................. | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Detrogelinite............... | 1 | 1 | 2 | 3 | 2 | 3 | 2 |
| Eucorpo. in eugel........ | 1 | 3 | 1 | 2 | 2 | 2 | 2 |
| Poricorpo. in eugel...... | T | 1 | 1 | 1 | T | 1 | 1 |
| Total: | 89 | 90 | 89 | 95 | 88 | 92 | 95 |
| Inertinites | |||||||
| Fusinite........................ | 2 | 2 | 4 | 1 | 1 | 1 | T |
| Semifusinite................. | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Inertodetrinite.............. | 2 | 1 | 2 | T | 2 | 1 | T |
| Sclerotinite.................. | T | T | T | T | T | T | T |
| Macrinite..................... | T | 1 | 1 | 0 | T | T | T |
| Total: | 4 | 4 | 7 | 1 | 3 | 2 | 0 |
Table 3. Petrographic data for the seven lignite samples in the A1 bed, Calvert mine. Data re reported as mean volume percentages on a mineral-free basis. Locations and thicknesses of samples are shown in figure 3. T = trace (<5 counts/1000, res. = resinite, fluor. = fluorescing clays, htel. = humotelinite, det. = detrogelinite, poricorpo. = poricorpohuminite, ecorpo. = eurcorpohuminite, and eugel. = eugelinite.
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