The major rare-earth-element deposits of Australia - cloudfrontMar 12, 2004 . require extensive crushing and milling. Mesozoic alkaline . many elements (17 REE and associated metals) in the primary host rock and in .. Geological map of the Toongi trachyte deposit, New South Wales. 109. Figure 3.34. .. veining and a possible preserved vesicular cap to the body. Hydrothermal.trachyte crusher cape metal,Economic Geology of the Platinum Metals - Alaska Division of ._. 3. Physical properties of the platinum metals, gold, and silver .. pyroxenite, and alkali-syenite dikes. Chalcopyrite close to ... provinces of the Transvaal and Cape of Good Hope, .. posit, though it is recorded that equipment for crushing.Field Book of Common Rocks and Minerals, by Frederic Brewster .Crystals of green corundum in syenite, from Montana. .. In this book the metals are the basis of classification, all those minerals primarily .. cease for a time and allow the lava to solidify and make a cap or cover over the opening. ... into angular fragments was due to other causes, such as crushing along a fault plane,.
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