brookite
Noun
Meaning
A mineral consisting of titanic oxide, and hence identical with rutile and octahedrite in composition, but crystallizing in the orthorhombic system.
Source: Webster's dictionarySynonyms
emery
clay
crystal
brimstone
calcite
alabaster
bauxite
fluorite
carbon
coal
boron
cobalt
asbestos
feldspar
corundum
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