Phyllosilicate alteration of plagioclase studied by transmission electron microscopy

Research Article| August 01, 1979 Phyllosilicate alteration of plagioclase studied by transmission electron microscopy R. Page; R. Page 1Department of Geology and Geophysics, University of California, Berkeley, California 94720 Search for other works by this author on: GSW Google Scholar H. R. Wenk H. R. Wenk 1Department of Geology and Geophysics, University of California, Berkeley, California 94720 Search for other works by this author on: GSW Google Scholar Geology (1979) 7 (8): 393–397. https://doi.org/10.1130/0091-7613(1979)7<393:PAOPSB>2.0.CO;2 Article history first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation R. Page, H. R. Wenk; Phyllosilicate alteration of plagioclase studied by transmission electron microscopy. Geology 1979;; 7 (8): 393–397. doi: https://doi.org/10.1130/0091-7613(1979)7<393:PAOPSB>2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The alteration halo of a sulfide-bearing vein in the Butte, Montana, copper deposit forms by a sequence of reactions over a period of geologic time. With analytical transmission electron microscopy (TEM) this sequence can be followed on a fine scale. We can confirm the general pattern of plagioclase altering to a smectite, which in turn changes through a series of intermediate phyllosilicate phases to 2M1 sericite in the most altered part. TEM reveals that the intermediate phyllosilicates are commonly highly disordered, only a few unit cells wide, with curved lattice planes and abundant interlayering. Before they coarsen they transform into new phases until stable 2M1 sericite is grown. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.