The Unit Cell of Talc

M. Akizuki1 and J. Zussman2
1 Institute of Mineralogy, Petrology and Economic Geology, Tohoku University, Sendai, Japan.
2 Department of Geology, University of Manchester, Manchester, England.

Summary: Six specimens of talc studied by the electron microscope lattice-imaging and diffraction techniques were found to have the triclinic one-layer (1 Tr) structure. Since no evidence of a monoclinic two-layered structure was found in any specimen it is concluded that the 1 Tr structure is the common one for talc, and it may, moreover, be the only one. Extremely fine polysynthetic twinning and single intrinsic stacking faults were found in talc.

Mineralogical Magazine; March 1978 v. 42; no. 321; p. 107-110; DOI: 10.1180/minmag.1978.042.321.16
© 1978, The Mineralogical Society
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