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In his paper "Mineralbestand und Strukturen der Graphitund Sulfideinschlüsse in Eisenmeteoriten" E L G O R E S Y 1 reported the presence of a new Cu-, Cr-sulfide in some graphite-troilite nodules from the Odessa meteorite. No optical or analytical data were, however, published, since the small size of the grains observed did not allow any exact optical studies or quantitative microprobe measurements. He solelay mentioned that it is a reaction product between terrestrial Cu-minerals and daubreelite. Recently we were able to study relatively coarse patches of this questionable mineral in a new nodule from the Odessa meteorite. The nodule studied possesses a marked texture described before from similar nodules by E L G O R E S Y 1 and M A R S H A L L et al. 2. The most inner part of the nodule is formed of a big troilite bleb surrounded by a thick graphite ring. Just in the neighbourhood of the troilite bleb graphite is very massive and is of the "palmetten type" 1. The compactness of the graphite palmetts fades away towards the center of the graphite ring where it shows intemate intergrowth with fine grained troilite, daubreelite and a little ferroalabandite. The central troilite bleb is continuously intersected by very fine and long exsolution bodies of daubreelite parallel (0001) of troilite. Just behind the graphite ring there are several troilite bars separating this ring from the outer schreibersite and cohenite shells. In these troilite bars daubreelite is noticeably coarser and forms broad exsolution bodies. Some bars contain small patches of native copper. Here troilite is intersected by several chalcopyrite and bornite veins which sometimes truncate the daubreelite lamellae. Such daubreelites were found to be unhomogenous. They are intersected by numerous veinlets of 10 microns diameter of a light brownish green mineral whose reflectivity is slightly stronger than that of daubreelite (Fig. 1 *** ) . In oil immer-

Gentnerite, Cu 8 Fe 3 Cr 11 S 18 , a new Mineral from the Odessa Meteorite