ASSESSMENT OF THE COAL RESOURCES OF THE KYRGYZ REPUBLIC:

COAL CHARACTER AND DISTRIBUTION, GEOLOGY, MINING, AND IMPORTANCE TO THE NATION'S FUTURE

USGS Open File Report 97-137A (English)

Figure 12. Ternary diagram of maceral group composition (mineral- and mixtinite-free basis) of Kyrgyz coals sampled by the USGS compared with "main Gondwana coals" and "main U.S. and European coal resources".

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U.S. Department of the Interior, U.S. Geological Survey
URL: http://pubs.usgs.gov/of/1997/of97-137a/fig_12.htm
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