Hello D & K, Hi List, "...has anyone found nodules from other iron meteorites ...?
I haven't but Vagn Buchwald has found them in several irons: 1. Butler (IRANOM): Figure 402. Butler (Tempe no. 137ax). Plessitic octahedrite with an anomalously high germanium content. Large troilite nodule (gray) and three graphite nodules* (black). Deep-etched. Scale bar in cm. (Courtesy C.B. Moore.) * The nodules are very small, about 0.5 mm Figure 407. Butler (Copenhagen no. 1876, no. 2247). The edge of a graphite nodule, composed of micron-sized crystallites. Numerous metal particles are present along the edge. Polished. Scale bar 40 ยต. 2. Cosby's Creek (IAB): Most specimens appear to be broken fragments; concave smooth impressions of now lost troilite-graphite nodules, 2-5 cm in size, are often found in the fracture surfaces. Graphite is common, probably always associated with troilite. Reichenbach (1862b: 57) isolated a graphite nodule weighing about 80 grams, and J.L. Smith (1876a) examined a graphite nodule 6 x 3.5 x 2 cm weighing 92 g. A discontinuous rim of 1 mm troilite covered the surface of the nodule, and in the interior other minor troilite bodies were present. Smaller graphite and troilite nodules are frequently met with. Some appear to have been parallel, elongated cones of finger size that were easily detached from the matrix. In U.S. National Museum no. 738, the remnants of a complex troilite-graphite-schreibersite-cohenite nodule may be seen. Mazapil (IAB): Both Hidden and Brezina noted the prominent troilite-graphite nodules which appeared in slight relief on the surface and may be indistinctly seen upon the engraving provided by Hidden. Perhaps they are seen somewhat better in a photograph reproduced by Merrill (1929: plate 6). The plessite morphology and the troilite-graphite nodules indicate a close relationship to Misteca, Balfour Downs and Shrewsbury, particularly to the last mentioned, ... Reference: BUCHWALD V.F. (1975) Handbook of Iron Meteorites, Volumes 1-3. Best wishes, Bernd ______________________________________________ http://www.meteoritecentral.com Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list
