|
Canada | |
- Minto District (Minto coalfields)
| Rocks & Min.: 14:149. |
|
China | |
|
| Zhuang, X., Querol, X., Zeng, R., Xu, W., Alastuey, A., Lopez-Soler, A., and Plana, F. (2000): International Journal of Coal Geology 45(1), 21-37. |
|
| Zhuang, X., Querol, X., Zeng, R., Xu, W., Alastuey, A., Lopez-Soler, A., and Plana, F. (2000): International Journal of Coal Geology 45(1), 21-37. |
|
Germany | |
|
| Harder, H. (1954): Contributions to Mineralogy and Petrology 4(1/2), 54-66. |
|
Italy | |
|
| Raman Spectroscopy (Michigan University) |
|
USA | |
|
| Tenney, J.B. (1928), The mineral industries of Arizona, AZ Bur. Mines Bull. 125: 111-112. |
|
| Tenney, J.B. (1928), The Mineral Industries of Arizona, AZ Bur. Mines Bull. 125: 111. |
|
| Van Amringe, E.V., personal communication to Murdoch & Webb; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 258; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 272. |
|
| http://www.epa.gov/cmop/pdf/stu001.pdf |
|
| Rocks & Min.: 17:5. |
|
| 24th annual coal report of the Illinois Bureau of Labor Statistics 1905 |
|
| |
|
| Field description of coal By Russell R. Dutcher, American Society for Testing and Materials. Committee D-5 |
|
| |
|
| |
|
| Field Guide of Common Rocks and Minerals-Fredrick Brewster Loomis-1948 |
|
| Field Book of Common Rocks and Minerals- Fredrick Brewster Loomis-1948 |
|
| Kentucky Geological Survey |
|
| Maryland Geological Survey, Vol. VIII (1909): 107. |
|
| Maryland Geological Survey, Vol. VIII (1909): 107. |
|
| Maryland Geological Survey, Vol. VIII (1909): 108. |
|
| Maryland Geological Survey, Vol. VIII (1909): 107. |
|
| Maryland Geological Survey, Vol. VIII (1909): 107. |
|
| Maryland geological Survey, Vol. VIII (1909): 107. |
|
| Maryland geological Survey, Vol. VIII (1909): 107. |
|
| Maryland Geological Survey, Vol. VIII (1909): 107. |
|
| Maryland Geological Survey, Vol. VIII (1909): 107. |
|
| Maryland Geological Survey, Vol. VIII (1909): 108. |
|
| Field Guide of Common Rocks and Minerals - Fredrick Brewster Loomis-1948 |
|
| Field Book of Common Rocks and Minerals- Fredrick Brewster Loomis -1948 |
|
| Jay Ellis Ransom,1974,Gems and Minerals of America |
|
| Field Book of Common Rocks and Minerals - Fredrick Brewster Loomis-1948 |
|
| Gems and Minerals of America-Jay Ellis Ransom-1974 |
|
| State Board of Agriculture, Raleigh,1896, North Carolina and its Resources |
|
| North Carolina Geological Survey |
|
| North Carolina Geological Survey |
|
| Gems and Minerals Of America-Jay Ellis Ransom-1974 |
|
| Field Book of Common Rocks and Minerals- Fredrick Brewster Loomis-1948 |
|
| Geology and Palaeontology Of Ohio 1878, Volume 3: Geology and Palaeontology, Columbus, Ohio : Nevins & Meyers, 1878 (Chapter 68 (Pages 348-361) Geology of Licking County – M.C. Read) |
|
| Field Guide of Common Rocks and Minerals -Fredrick Brewester Loomis-1948 |
|
| Tennessee Geological Survey |
|
| Field Book of Common Rocks and Minerals - Fredrick Brewester Loomis-1948 |
|
| Field Book of Common Rocks and Minerals - Fredrick Brewster Loomis-1948 |
|
| http://www.as.wvu.edu/ihtia/Getting%20the%20Coal%20Out.pdf |