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brookite
Brookite is a highly specialized technical term used almost exclusively within the fields of mineralogy and geology. It describes a specific crystalline form of titanium dioxide, distinguishing it from its polymorphs, rutile and anatase, which share the same chemical formula but differ in crystal structure.
As a mass noun referring to a mineral species, it is typically treated as uncountable. When referring to specific physical specimens or crystals, it is common to use partitive constructions such as "a sample of brookite" or "crystals of brookite" rather than pluralizing the word itself.
Meanings
Examples
The geologist identified a small crystal of brookite in the sample.
Is this specimen actually brookite or just rutile?
Brookite is one of the three main polymorphs of titanium dioxide.
I wonder if I can find some brookite in this region.
The reddish hue of the mineral suggests it might be brookite.
We need to analyze the lattice structure to confirm it is brookite.
Brookite occurs much less frequently than anatase in nature.
Look at these brownish-yellow crystals of brookite under the microscope.
The researcher studied the photocatalytic properties of synthetic brookite.
The researcher studied the photocatalytic properties of synthetic brookite.