Main Page | See live article | Alphabetical index Brookite is a mineral consisting of titanium oxide, and hence identical with rutile and octahedrite in composition, but crystallizing in the orthorhombic system (see crystal structure). (Named from Henry James Brooke, English mineralogist, 1771 - 1857) See also: List of minerals This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.