Media type: E-Article Title: On Arfvedsonite, Riebeckite, and Crocidolite from Greenland Contributor: Gordon, Samuel G. Published: Academy of Natural Sciences of Philadelphia, 1927 Published in: Proceedings of the Academy of Natural Sciences of Philadelphia, 79 (1927), Seite 193-205 Language: English ISSN: 0097-3157; 1938-5293 Origination: Footnote: Access State: Open Access