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Designates the characteristic maceral of boghead coal. In reflected light it is very difficult to recognize the cellular structure of the algae. The reflecting power of the maceral is much weaker than that of vitrinite and is also weaker than that of sporinite in coals of low rank. In transmitted light, alginite sometimes shows structure (of colonies of algae). The color is yellow to orange. Alginite is best recognized by luminescent microscopy; it shows marked luminescence of varying color--silvery blue, green, yellowish brown. The humic constituents either are not luminescent or show a different kind of luminescence to the alginite. Syn: algite IHCP
Source: Dictionary of Mining, Mineral, and Related Terms

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