Pyramidal but prismatic habit crystals of tin stone from East Transbaikal
Abstract
The study of pegmatite deposits of tin stone from East Transbaikal gave a number of results indicating a connection between the form and genesis of this mineral. A number of cassiterite crystals found in pegmatite veins confirm the connection of pyramidal crystals with high-temperature formation conditions. The described high-temperature crystals of tin stone from the Zavitinsky deposit were of interest, having a prismatic appearance that is characteristic of low-temperature pegmatites. Measurements of a single crystal showed that it is a dipyramid with angles between the normals to the faces of the dipyramid equal to 58°16'. "Fedorovsky Institute"
References
- Artemyev B.N. Materials on the mineralogy of cassiterite and some other pegmatite and pneumatolytic minerals. Izv. Acad. Sciences, 1933. Ahlfeld F. Über Tracht und Genesis des Zinnsteins. Foitsch. d. Miner., B. 16, I, 1931, S. 47.
- Maucher. Leitfaden für Geologie. Unterricbt an Berg- und Hüttenschulen. Freiberg, 1914.