GEOL 2540 Lecture Notes - Lecture 10: Forsterite, Talc, Crocoite

• School: University of Manitoba
• Department: Geological Sciences
• Course: GEOL 2540
• Professor: Chakhmouradian Anton

Document Summary

Jons berzelius: chemical elements, chemical principles of classification classification. James dwight dana: system of mineralogy (1837), chemical classification of minerals. Hugo strunz: mineralogische tabellen (1941), structural principles of classification. Today: ~4800 mineral species organized into ~35 chemical classes further subdivided into subclasses and groups. <3% iron fe; sulfur s; taenite (ni,fe); cohenite fe3c; roaldite fe4n. ~10% cuprite cu2o; ilmenite fetio3 brucite mg(oh)2; goethite feooh. Oxysalts (carbonates, anhydrite caso4; crocoite pbcro4; nitrates, borates, sulfates, mimetite pb5(aso4)3cl sulfites, phosphates, arsenates mimetite pb5(aso4)3cl sulfites phosphates arsenates. Troilite fes; chalcopyrite cufes2; pyrite fes2; nickeline nias. Nesosilicates (island silicates, insel-silicates) (i l d ili ili i t. ~1,300 mineral species t l ili t (sio4)4- Inosilicates (chain silicates and band silicates) single chains: Phyllosilicates (sheet silicates, layered silicates) (sixo2. 5x)x- e. g. , (si2o5)2-, (si4o10)4-, (alsi3o10)5- All tetrahedra are interconnected (each tetrahedron shares all of its four corners with other tetrahedra) framework aluminosilicates. Structure of kalsilite k(alsio4) h lf f ll si4+