 | | Report (issue) | | Warren Nor ton, and Herman W. Pfefferkorn E. Ohio, by Horace R. Collins F. Kentucky, by Charles...Lu~d, Warren Norton, and Herman W. Pfefferkorn _ E. Ohio, by Horace R. Collins ------------------------------F...rest of southern feldspar, chlorite, illite or muscovite, calcite, pyrite, New England west of the basin...Biotite Gamet Kyanite-Staurolite Sillimanite-Muscovite Sillimanite-K-Feldspar Coal sighting Drill hole...metamorphism and not the cause. Radiometric dates on muscovite and biotite from the kyanite-staurolite zone indicate |  | | Report (volume) | | 1928. N. C., March 1935. N. Dak., September 1931. Ohio, February 1930. Okla., January and February 1931... 5 in., inch or inches. Circ., Circular. Co., County or Company. Indus., Industrial. Inst., Institute...Pre-Cambrian : Central southern Virginia (Mecklenburg County). F. B. Laney, 1917 (Va. Geol. Surv. Bull. 14,...that at the location the Abilene fm. is a mud or clay cgl.?"). This bed in type section at Abilene, Kans...Abrams mica schist.— Composed of thin folia of muscovite of dull colors (gray, light-brown, yellow and |  | | Book | | ofclaymiOOkerr PRELIMINARY REPORTS REFERENCE CLAY MINERALS AMERICAN PETROLEUM INSTITUTE RESEARCH PROJECT...—United States 2 Reference Clay Localities P. F. No. Names Glossary of Clay Mineral Kerr and 3 Differential...Reference Clay Mineral Specimens J. L. Kulp, and P. K. Hamilton P. F. Kerr, No. 4 Reference Clay R. No...Occurrence and Microscopic Examination of Reference Clay Mineral Specimens P. F. Kerr, M. S. Main, and...Hamilton No. 6 Electron Micrographs of Reference Clay Minerals D. W. Davis, T. G. Rochow, F. G. Rowe, |
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