Zn-Rich Spinel in Association with Quartz in the Al-Rich
Por um escritor misterioso
Last updated 03 julho 2024
![Zn-Rich Spinel in Association with Quartz in the Al-Rich](http://en.earth-science.net/fileDQKXEN/journal/article/jes/2014/2/jes-25-2-207-1.jpg)
Al-rich metapelites from the Mashan khondalite series are characterized by the assemblage Spl+Grt+Sil+Crd+Bt+Pl (An<sub>72</sub>)+Kfs+Quartz+graphite. Large amounts of spinel+quartz assemblages occur as inclusions in garnet and prismatic sillimanite in the Al-rich metapelites of the Mashan complex, NE China. The chemical composition of spinel is characterized by Zn-rich (<i>X</i><sub>Zn</sub>=0.33–0.40. <i>X</i><sub>Zn</sub>=Zn/Zn+Mg+Fe*) (Fe*=Fe<sup>2+</sup>+Fe<sup>3+</sup>) and Fe<sup>3+</sup> rich (up to 0.31 p.f.u.). The characteristic chemical composition and the mineral association indicated that the formation of spinel and quartz assemblage may be due to the breakdown of Zn-rich staurolite. The geothermobarometers studies show that the peak temperature of the Mashan complex is around 820 ℃ and the peak pressures is 8.0 kbar. The Mashan complex shows a typical orogen style <i>P</i>-<i>T</i> path.
![Zn-Rich Spinel in Association with Quartz in the Al-Rich](https://www.researchgate.net/publication/249849980/figure/fig1/AS:341267495047174@1458375919889/Photomicrographs-of-a-Zincian-staurolite-St-with-inclusions-of-rutile-Rt-quartz.png)
Photomicrographs of: (a) Zincian-staurolite (St) with inclusions of
![Zn-Rich Spinel in Association with Quartz in the Al-Rich](https://media.springernature.com/m685/springer-static/image/art%3A10.1038%2Fs41467-019-13117-1/MediaObjects/41467_2019_13117_Fig1_HTML.png)
Cr-spinel records metasomatism not petrogenesis of mantle rocks
Relationships between Cr/(Cr + Al) atomic ratio and Mg#, and Cr-Al-Fe
![Zn-Rich Spinel in Association with Quartz in the Al-Rich](https://mdmayagems.com/cdn/shop/products/matched-pair-red-spinel-1-75-ct-p10_2000x.jpg?v=1516274384)
Rich Burmese Red Spinel. Hard to Find Pair, Baguette Cut, 1.75 ct. pai - MdMaya Gems
![Zn-Rich Spinel in Association with Quartz in the Al-Rich](https://www.mdpi.com/minerals/minerals-10-00608/article_deploy/html/images/minerals-10-00608-g001-550.jpg)
Minerals, Free Full-Text
![Zn-Rich Spinel in Association with Quartz in the Al-Rich](http://en.earth-science.net/fileDQKXEN/journal/article/jes/2014/2/jes-25-2-207-8.jpg)
Zn-Rich Spinel in Association with Quartz in the Al-Rich Metapelites from the Mashan Khondalite Series, NE China
![Zn-Rich Spinel in Association with Quartz in the Al-Rich](http://en.earth-science.net/fileDQKXEN/journal/article/jes/2014/2//jes-25-2-207-T10.jpg)
Zn-Rich Spinel in Association with Quartz in the Al-Rich Metapelites from the Mashan Khondalite Series, NE China
![Zn-Rich Spinel in Association with Quartz in the Al-Rich](https://www.researchgate.net/publication/225764113/figure/fig1/AS:302632355811341@1449164585129/Photographs-showing-the-field-appearance-of-the-xenoliths-at-localities-1-2-and-4-A.png)
Photographs showing the field appearance of the xenoliths at localities
![Zn-Rich Spinel in Association with Quartz in the Al-Rich](https://mdmayagems.com/cdn/shop/products/Rich-Red-Spinel-Gemstone-Cushion-Cut-1-34-ct-picture-3_2000x.jpg?v=1512989930)
Amazing Rich Red Spinel Gemstone. Cushion Cut. 1.34 cts. - MdMaya Gems
![Zn-Rich Spinel in Association with Quartz in the Al-Rich](http://en.earth-science.net/fileDQKXEN/journal/article/jes/2014/2//jes-25-2-207-T12.jpg)
Zn-Rich Spinel in Association with Quartz in the Al-Rich Metapelites from the Mashan Khondalite Series, NE China
![Zn-Rich Spinel in Association with Quartz in the Al-Rich](http://en.earth-science.net/fileDQKXEN/journal/article/jes/2014/2/jes-25-2-207-6.jpg)
Zn-Rich Spinel in Association with Quartz in the Al-Rich Metapelites from the Mashan Khondalite Series, NE China
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