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                                        March 14, 1977

Airmail

Mr. D.H. McColl
Bureau of Mineral Resources
P.O. Box 378
Canberra City, A.C.T., Australia 2601

Dear Don,

     Thank you for your letter of March 8. It is unfortunate that your collection of Broken Hill meteorites is so poorly localized, but that cannot be helped at this stage. My offer to help in sorting them out still stands; even in extremely weathered stones the olivine and pyroxene generally retain their original composition, and hence can be used to classify them. As I mentioned in my previous letter, we would need to have fragments or small slices 1-2 cm across to make probe thin sections, which we mount on 1" diameter glass discs. I would like to have a copy of your list of weights, dimensions, and specific gravities, and the location diagram.

     As far as the Deniliquin meteorite of 1973 is concerned, my impression of the probably area of fall (based on observers's recollection of time interval between light and sound effects) is indicated on your map, essentially just east of Wakool. Oliver Chalmers was also in the field with us, and may have additional information. We spoke to the children at Wakool School and explained the importance of the meteorite, asking them to send any information to the Australian Museum.

     With best regards,

                                Sincerely yours,

                                Brian Mason
                                Curator
                                Department of Mineral Sciences

BM/ks