A högbomite-spinel-gedrite paragenesis from northern Bushmanland, Namaqua mobile belt, South Africa

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Authors:Beukes, G. J.; Van Zyl, V. C.; Schoch, A. E.; de Bruiyn, H.; Van Aswegen, G.; Strydom, D.
Author Affiliations:Primary:
Univ. Orange Free State, Dep. Geol., Bloemfontein 9300, South Africa
Volume Title:Neues Jahrbuch für Mineralogie. Abhandlungen
Source:Neues Jahrbuch für Mineralogie. Abhandlungen, 155(1), p.53-66. Publisher: E. Schweizerbart'sche Verlagsbuchhandlung, Stuttgart, Federal Republic of Germany. ISSN: 0077-7757
Publication Date:1986
Note:In English. 27 refs.; illus. incl. 5 tables, geol. sketch map
Summary:Hogbomite occurs in cordierite-gedrite-phlogopite schist, hornblendite and massive amphibolite in three localities in Bushmanland; associated minerals include gedrite, phlogopite, hornblende, cordierite, staurolite, pleonaste, magnetite, corundum and chlorite. Microprobe analyses for six hogbomites show them to be predominantly ferroan, but one sample from massive amphibolite at Hom is high in Zn; the latter is a 4H polytype (a 5.703, c 18.359 A) while most of the others are 5H (a 5.722-5.738, c 22.990-23.005 A) (M.M. 33-563). Aalyses are also given for coexisting pleonaste, magnetite, gedrite, salite, hornblende, cordierite, staurolite, grossular, phlogopite and chlorite. [R.A.H.]
Subjects:Amphibole group; Chain silicates; Electron probe data; Gedrite; Hoegbomite; Mineral assemblages; Mineralogy; Minerals; Orthoamphibole; Oxides; Paragenesis; Polytypism; Silicates; Spinel; X-ray data; Africa; Cape Province region; Namaqualand; South Africa; Southern Africa; Bushmanland; Cape Province South Africa; Namaqua mobile belt
Abstract Numbers:87M/3104
Record ID:1988004702
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom, Reference includes data from Geoline, Bundesanstalt fur Geowissenschaften und Rohstoffe
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