Lepidomelane

[lepidәu'melein]

解释:

(noun.) a mica that is a biotite containing iron.

整理:梅尔巴--From WordNet

解释:

(n.) An iron-potash mica, of a raven-black color, usually found in granitic rocks in small six-sided tables, or as an aggregation of minute opaque scales. See Mica.

录入:帕特里斯