Discussion of a paper by B.H. Flinter (GeoScience Abstracts 1-1752). The term "hydroilmenite" is less preferable than "altered ilmenite" or "weathered ilmenite." The use of the term "arizonite" for fine-grained but well-crystallized alteration products of ilmenite is unjustified because this type of material is well covered by the term "leucoxene." A brief history of some of the controversial aspects of the ilmenite problem is given and it is concluded that chemical analyses should be given on all titaniferous materials studied; the term "ilmenite" should be qualified by such adjectives as "weathered" where applicable; and the Committee on Publications of the Society of Economic Geologists should review the problem and recommend a uniform system of terminology.

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