SCHMIDT, Johann Christian Lebrecht.

mit Anwendung auf den Bergbau. Ein Beitrag zur allgemeinen Gangtheorie… Frankfurt am Main: Bei Johann Christian Hermann. .1810

8vo, pp. xvi, 118, (2) blank, 3 folding and stilted engraved plates. Contemporary half sheep and marbled sides, green morocco label on spine, green edges. Ends of spine and corners worn, joints rubbed, but internally a fresh and clean copy.

FIRST EDITION. The study of the theory of the origin of ore deposits was greatly stimulated by A.G. Werner’s Neue Theorie von der Entstehung der Gänge (1791), which better enabled miners to predict where ore beds might occur. The present work is a notable but little-known elaboration of Werner’s theories. Schmidt, who was director of mines at Bieber, explains the shifting or dislocation of mineral veins within several strata and other phenomena relating to the paragenesis of minerals.

Unsure of some of these terms? Click here to download a copy of Carter & Barker, ABC for Book Collectors (2006), which has full explanations.