 | | Journal (article/letter/editorial) | | metamorphic Geol. 1987, 5, 439-450 Sillimanite and. andalusite produced by base-cation leaching and contact...peraluminous hornfelses, containing cordierite, andalusite, sillimanite, biotite, pyrite and pyrrhotite...probably undergone similar leaching. Key-words: andalusite; base-cation leaching; contact metamorphism;...have been contact metamorphosed to cordierite-, andalusite-, sillimanite-bearing hornfelses, and occur adjacent...the Kentucky area, including the leached hornfels outcrops. Inset map shows the location of Kentucky |  | | Journal (article/letter/editorial) | | reaction: zincian staurolite + muscovite+ quartz + O2 andalusite + Zn-rich spinel+ magnetite + biotite + H20....Fe-staurolite component +muscovite+ quartz+O 2 to form andalusite+biotite+magnetite. These product phases were...spinel which formed together with magnetite, andalusite, and biotite as the result of an oxidation reaction...Dashed lines indicate uncertain contacts based on outcrops. Inset: Map showing the Barrovian metamorphic...the basis of the contact metamorphic mineral andalusite, has an estimated width of about 200 m within |  | | Book | | 1. Spherulites Fig. 2. Amphibole-garnet-hornfels, Fig. 3. Pseudo-tachylyte Fig. 1. in pseudo-tachylyte...pseudo-tachylyte, Zijferfontein. in Witbank. garnet-hornfels, Kopjes- kraal. XXV. Junction between pseudo-tachylyte...Cordierite-biotite-garnet-hornfels, Kopjes- kraal. XXVI. 1. Biotite-cordierite-hornfels, Fig. 2. Amphibole-hornfels...Amphibole-hornfels, Deelfontein. Fig. 3. Fig. Leeuwdoorns. Biotite and sillimanite in hornfels, Schurvedraai...Fig. 1. Grunerite and fontein. magnetite in hornfels, Deel- X Fig. 2. Recrystallised Orange Grove |  | | Report (Issue volume) | | ORES Da oe ane eeer aee Goonumbla porphyry copper district — Endeavour 26 North, Endeavour 22 and Endeavour...prospecting located traces of base metals in surface outcrops but there are a number of tantalising by volume...material occur in outcrop. Diamictite Small outcrops and drill core intersections of diamictite occur...Precambrian Cratons and Cover, South Australia outcrops supports this observation, since regional folding...Sinter. The two major outcrops are on Mount Gee and Mount Painter; smaller outcrops occur along Radium Ridge |
|
