Document e7VVanqr4ZaJj1Bkxg9LxkDbe

Johnson Subject EXAMINATIOONF VERMONT 66 TALC BY RAY DIFFRACTION AND DIFFERENTIAL THERMAL ANALYSIS PROJECNT O 0503.01 NewBrunswic N.k J. January 13 1977 The following composite samples of Vermont 66 talc have been analyzed by 1 continuous scanning ray diffraction for qualitative mineralogical composition 2 slow scanning ray diffraction for the presence of amphibole minerals CTFA Method J4-1 and 3 differential thermal analysis for the presence of quartz CTFA Method J5-1 and serpentine minerals 11/1 - 11/5/76 11/8 - 11/12/76 11/16 - 11/20/76 11/22 - 11/25/76 11/29 - 12/3/76 The chlorite levels in these current samples appear to be lower than those observed in the composite samples from 1/76 - 10/76 theNovember chlorite levels approximate those found in 1976 weekly composite talcs : OS No quartz serpentine minerals or amphibole minerals were detected in these samples Degina Gallagher Regina Gallagher gm CC Mr. W. Ashton Dr. B. Semple Dr. L. Brickman os Mr. V. Zeitz Windsor Mr. H. Cohen Minerals Dr. G. Hildick Central Central File < Mr. R. Miller Windsor Minerals Section File , @y . Dr. W. Nashed an Dr F. R. Rolle to Dr. A. J. Goudie' Dr. D. R. Petterson CENTRAL CENTRAL FILE JAN 19 1977 RECEIVER RECEIVER 000252279