Author: WEISS, Christian Samuel (1780-1856).:
Title: Ueber die Theorie des Epidotsystems. Eine in der königlichen preussischen Akademie der Wissenschaften vorgelesene Abhandlung.
Description: Berlin 1820. 4to, 25.2cm. Pp. 28, 6 figs. on 1 engraved plate. Offprint, plain new wrappers. Faint fold in outer blank margin, very good otherwise. - First complete indexing of crystal faces of monoclinic epidote, which may be considered the beginning of systematic crystallographic work on this mineral group. Cf. Dict. Sci. Biogr., vol. XIV, p. 240. Rare.

Keywords: