Alteration of ilmenite

Discussion of a paper by B.H. Flinter (GeoScience Abstracts 1-1752). The term hydroilmenite is less preferable than altered or ilmenite. The use of the term arizonite for fine-grained but well-crystallized alteration products of 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 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.