| 11. | These minerals, known as index minerals, include sillimanite, kyanite, staurolite, andalusite, and some garnet.
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| 12. | "' Andalusite "'is an aluminium nesosilicate mineral with the chemical formula Al 2 SiO 5.
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| 13. | This concentrated impurity deposit forms a re-entrant as it is absorbed by the growth of the andalusite porphyroblast.
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| 14. | Kaolinite and dickite occur at lower temperatures whereas pyrophyllite and andalusite occur under high temperature conditions ( T > 300�C ).
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| 15. | Almandine occurs in metamorphic rocks like mica schists, associated with minerals such as staurolite, kyanite, andalusite, and others.
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| 16. | This formation contains most of the world's reserves of minerals such as andalusite, chromium, fluorspar, platinum and vanadium.
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| 17. | The andalusite produced will be priced at R20 per ton delivered in the truck at the station in bags, being production costs.
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| 18. | Andalusite is stable at low pressure, kyanite is stable at high pressure but relatively low temperature and sillimanite is stable at high temperature.
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| 19. | Brand new, in a profusion of striking colors such as Andalusite Blue and Rose Beige, they sold for as little as $ 435.
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| 20. | The aluminosilicates are a group of three minerals kyanite, andalusite, and sillimanite which share the chemical formula Al 2 SiO 5.
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