any of various minerals consisting of hydrous silicates of aluminum or potassium etc. that crystallize in forms that allow perfect cleavage into very thin leaves; used as dielectrics because of their resistance to electricity
Cite this entry
Style:
MLA
MLA
APA
Chicago
Copy citation
DISCLAIMER: These example sentences appear in various news sources and books to reflect the usage of the word ‘biotite'.
Views expressed in the examples do not represent the opinion of Vocabulary.com or its editors.
Send us feedback
This list is a real gem! If you dig geology, be sure to learn these essential terms related to rocks and minerals. Just review this list and the differences between igneous, metamorphic, and sedimentary rock will be crystal clear.