Document LKeMB9Q748jYZ0Zo63xndg7wq

University @ University / . Cardiff Lh.ve / heee 7 ColleCardiff Cardiff Postal Address University College Newport Road Cardiff CF2 1TA 1TA Telegrams Telephone Cardiff 44211 Ext 7062 Coleg Cardiff From From Dr. F.D. F.D. Pooley sooscoceooee Departmentof...Exploitation FDP Dr. F.R. Rolle 36 Heather Drive Somerset New Jersey 08873 U.S.A. ; 25th January 1977 _ replying Dear Bob Sorry to have been so long in to your request about chlorite but we have been tracked a little by some other material in the sample which you sent us The ray data which. we have taken from the composite sample we have compared with the 228 p and also the 6/30 sample which you sent us last year We have also included another Vermont sample from Windsor Minerals for variation in best comparison labelled Cleaner Concentrate the chlorite content can be observed The from an examination the of the talc and chlorite peaks occurring in 24 - 27 26 positions as illustrated by the accompanyingfigure If we assume that the talc % is changing very little then the magnitude of the large changes in talc peak will also change the chlorite content i.e. very little However doubling will be reflected in large changes in the chlorite peak with respect to the talc peak If we assume that the 228 p contains % chlorite then taking the talc to chlorite peak ratios for the other samples we obtain chlorite contents 16/30 sample 3 - % for the Vermont of approximately composite and % % for the for the cleaner concentrate sample . The'cleaner concentrate sample is one supplied to J and Great Britain for consideration for use here The general conclusion from ray data therefore is that the Vermont compo- site sample contains twice as much chlorite The ratios also agree using the other other talc for ratio purposes against the small as the 228 p sample chiorite peak at 12.5 reflection at 26 20 20 I mentioned that we had been distracted by other material in the Vermont composite sample when we came to perform some confirmatory Edax and microscope work and before reporting the chlorite content this way I would be grateful if you could send me a much larger sample of Vermont composite and also a large sample of 228 p about 100 grams of each will do We have found in the V. composite fibres of Antigorite which I would like to confirm using another sample Also if you could check with whether over findings looked our Windsor Minerals their talc ore source has changed the past year or so I will let you have data etc. when we have at another sample will get this in the post post post now so that you can get on material back to me as quickly as possible possible possible possible Yours ---- -- ---- -- ---------- -- ---- -- ---- -- JNJ 000264731