 | | Journal (article/letter/editorial) | | COLUMBOMICROLITE FROM ESHOWE, NATAL J. E. ne Vttttrns, GeologicalSuruey of the Union of South Africa, Preloria....{cr Columbomicrolite, a new member of the pyrochlore group occurring as tiny grains in albitite, has...each rnember of the group. OccuRnBNcB While examining a rock sample from Natal during 1938, the writer...gneiss about ffteen miles north of the village of Eshowe. The rock usually has a sugary texture, but may...in the filtrate after the metals of the ammonia group had been removed (CaO was determined accordingto |  | | Journal (article/letter/editorial) | | 1977 Classificationand nomenclatureof the pyrochlore group D. D. HoclnrHl Departmentof Geology,Uniuersityof...nomenclature: pyrochlore[Ar-.B,O6(O,OH,F)r-".pHzO] Group Subgroups pyrochlore,microlite,betafite pyrochlore,kalipyrochlore...accepted classification of the pyrochloreminerals.In pyrochlore-microlite this classification wasdescribed as...uncertainty" existsconcerningtheir relationshipwith pyrochlore and microlite.Thesetwo mineralswerelatershown...n, chemicallyand structurally,to retainthe pyrochlore structurewith manyof the largercationsitesunfilled |  | | Report (issue) | | SURVEY OF SOUTH AFRICA COUNCIL FOR GEOSCIENCE GEOLOGICAL SURVEY OF SOUTH AFRICA MINERALOGY OF SOUTH AFRICA:... COUNCIL FOR GEOSCIENCE GEOLOGICAL SURVEY OF SOUTH AFRICA Scientific Editor R.D. Dixon Linguistic and...Council for Geoscience (Geological Survey of South Africa), 280 Pretoria Street, Silverton, Pretoria or............. 50 4.2 Unidentified Non-Platinum-Group Phases .................................................................. 69 5.1 Overview of South African Occurrences ........................... |  | | Book | | approved rulings have been published for the pyrochlore (Amer. Mineral. 1977, 62, 403) and amphibole...recommendations on the nomenclature of the amphibole group, published in the Mineral. Mag. (1978, 42, 533)...p. 433 (Adigeite). A mineral of the serpentine group with the composition 5Mg0.3Si02.3^-4H20, from Mt...colourless, monoclinic crystals from Kimberley, South Africa. Named after Mr. Alpheus Fuller Williams, of...8-899, b 7-065, c 6-644 A, /? 97-25°, 4 space group C2/m. Composition 2[CoC12.6H20], with small amounts |
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