For example, in 1774 Abraham Gottlob Werner published the book Von den äusserlichen Kennzeichen der Fossilien (On the External Characters of Minerals), which brought him widespread recognition because he presented a detailed system for identifying specific minerals based on external characteristics.
Por exemplo, en 1774 Abraham Gottlob Werner publicou o libro Von den äusserlichen Kennzeichen der Fossilien (Sobre as características externas dos minerais), que lle deu un amplo recoñecemento porque nesa obra presentaba un sistema detallado para identificar minerais específicos baseándose en características externas.