"The members of the Mundrabilla duo, Waterville (1.63) and Mundrabilla (1.64), are FeS-rich irons, closely related to each other in structure and composition. They are within the sLL scatter field on most diagrams, but plot slightly low on the Ga-, Ge-, and W-Au diagrams. Because of these discrepancies and their very high FeS contents, we list them as ungrouped but they could also be designated anomalous members of the sLL subgroup."
Hope this helps!
-John & Dawn Arizona Skies Meteorites
Martin Altmann wrote:
Salü list,
in painting my specimen chits, I ask myself, how to denominate Mundrabilla correctly. Old Catalogue has simply "IRANOM", 2000er Grady Catalogue says "IIICD" and "anomalous", now with the finer Au-stuff and the subgroups, I read, that Mundrabilla and Waterville are close to sLL.
Shall I write now IAB-ANOM?
Will the "anomalous" disappear, if the five-of-a-kind-rule for the subgroup is fullfilled and beside Waterville, three other Mundrabilla-like irons will habe been found? Or refers the "anom" to the troilites, silicates or to the smallness of the taenite crystals (which make etched Mundrabillas to the most beautiful irons, one can imagine. One of my favourites)?
Thanks! Martin
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