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A mica that is a biotite containing iron
Answer for the clue "A mica that is a biotite containing iron ", 12 letters:
lepidomelane
Word definitions for lepidomelane in dictionaries
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
Mica \Mi"ca\, n. [L. mica crumb, grain, particle; cf. F. mica.] (Min.) The name of a group of minerals characterized by highly perfect cleavage, so that they readily separate into very thin leaves, more or less elastic. They differ widely in composition, ...
WordNet
Word definitions in WordNet
n. a mica that is a biotite containing iron
Wiktionary
Word definitions in Wiktionary
n. (context mineralogy English) A black iron-potash mica, usually found in granitic rocks in small six-sided tables, or as an aggregation of minute opaque scales.