| 单词 | biotite |
| 释义 | biotite (once / 124414 pages) n WORD FAMILY biotite USAGE EXAMPLESThey are excessively variable in their mineralogical composition, and very often alternate in thin seams with biotite hornfels and indurated quartzites. Various, Encyclopaedia Britannica, 11th Edit...(2012) The snowy white feldspar and quartz set off the glittering crystals of hornblende and biotite wonderfully. Scientific American(Mar 07, 2012) The biotite is brown; the hornblende brown or greenish brown; the augite usually green. Various, Encyclopaedia Britannica, 11th Edit...(2012) n dark brown to black mica found in igneous and metamorphic rock Hypo|Hyper lepidomelane a mica that is a biotite containing iron isinglass, mica 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 |
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