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gahnite |
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gahnite [′gä‚nīt] (mineralogy) ZnAl2O4A usually dark-green, but sometimes yellow, gray, or black spinel mineral consisting of an oxide of zinc and aluminum. Also known as zinc spinel. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Aluminum bronze results in alumina deposits, silicon bronze in silica deposits and trace aluminum in brass results in the complex gahnite (zinc alumina spinel). These anomalies are characterized by sulphide paragneiss with variable amounts of accessory pyrrhotite +/- magnetite +/- garnet +/- biotite +/- gahnite. A combination of well-characterized minerals and synthetic materials were used to calibrate for EPMA, including SMS scapolite (S and Cl), Corning W glass (6) (Co), SMS gahnite (Zn), SMS cassiterite (Sn), SMS strontianite and Corning X glass (Sr). |
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