Abstract
Research Article| May 01, 1945 X-RAY STUDY OF THE TANTALUM MINERAL SIMPSONITE PAUL F KERR; PAUL F KERR COLUMBIA UNIVERSITY, NEW YORK, N. Y. Search for other works by this author on: GSW Google Scholar RALPH J HOLMES RALPH J HOLMES COLUMBIA UNIVERSITY, NEW YORK, N. Y. Search for other works by this author on: GSW Google Scholar Author and Article Information PAUL F KERR COLUMBIA UNIVERSITY, NEW YORK, N. Y. RALPH J HOLMES COLUMBIA UNIVERSITY, NEW YORK, N. Y. Publisher: Geological Society of America Received: 30 Mar 1945 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1945, The Geological Society of America, Inc. Copyright is not claimed on any material prepared by U.S. government employees within the scope of their employment. GSA Bulletin (1945) 56 (5): 479–504. https://doi.org/10.1130/0016-7606(1945)56[479:XSOTTM]2.0.CO;2 Article history Received: 30 Mar 1945 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation PAUL F KERR, RALPH J HOLMES; X-RAY STUDY OF THE TANTALUM MINERAL SIMPSONITE. GSA Bulletin 1945;; 56 (5): 479–504. doi: https://doi.org/10.1130/0016-7606(1945)56[479:XSOTTM]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 SocietyGSA Bulletin Search Advanced Search Abstract The hexagonal mineral simpsonite, an oxide of aluminum and tantalum or a tantalate from Tabba. Tabba in Western Australia, was described and named by Bowley in 1939. Taylor furnished Laue and Bragg x-ray data at the same time. The mineral as originally identified was assigned a complex formula based upon the analysis of material consisting of a mixture of microlite and simpsonite.Since the original description appeared, occurrences of an aluminum tantalate have been found in two localities in Brazil along the boundary between the states of Paraíba and Rio Grande do Norte and in Southern Rhodesia at Bikita. X-ray-diffraction studies and optical examination have shown that the fundamental aluminum tantalate is the same in the materials from Western Australia, Brazil, and Southern Rhodesia. In addition Laue photographs have been obtained and correlated with Taylor's original x-ray data. Rotation photographs have been utilized in establishing the lattice constants. 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.
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