Keywords
Coal
Keyword Definition
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Hierarchical classification
Null >> Null >> Null >> Sample >> Lithosphere >> Rock >> Whole >> Rock >> Sedimentary >> Organic rich >> Coal
Children
Anthracite | Bituminous | Lignite
Category: Analysed material
The different kinds of sample material collected in the field have been classified hierarchically.Examples: “till”, “soil”, “vegetation”.Taken from the “Sample_Types_SHARED” database table.
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