Introduction

The investigation which led to the description of this rather rare mineral was initiated through a suggestion of Professor V. I. Kryzanovsky, Director of the Mineralogical Museum of the Academy of Sciences of the U.S.S.R., to whom the writer showed some grains of the mineral included in a purple chromian chlorite. A microchemical test by Prof. Kryzanovsky suggested that the mineral probably belonged to the ilmenite group, and might be the magnesian member, geikielite.

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