Zn-Rich Spinel in Association with Quartz in the Al-Rich
Por um escritor misterioso
Descrição
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/322296952/figure/fig4/AS:871962062635010@1584903364162/Photomicrographs-of-the-studied-rocks-a-Corundum-rich-rock-L1-consisting-of.png)
Photomicrographs of the studied rocks. (a) Corundum-rich rock (L1)
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PDF) Zn-Rich Spinel in Association with Quartz in the Al-Rich Metapelites from the Mashan Khondalite Series, NE China
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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/216831242/figure/tbl1/AS:670041620099090@1536761779466/ZINCIAN-SPINEL-LAIITIES-IN-IgE-SCANDDAVIAN-CALEDONIDES.png)
ZINCIAN SPINEL L@AIITIES IN IgE SCANDD{AVIAN CALEDONIDES
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PDF) Zn-Rich Spinel in Association with Quartz in the Al-Rich Metapelites from the Mashan Khondalite Series, NE China
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Zn-Rich Spinel in Association with Quartz in the Al-Rich Metapelites from the Mashan Khondalite Series, NE China
Activities of MgAl 2 O 4 and Al 8/3 O 4 components in MgAl 2 O 4 -Al
![Zn-Rich Spinel in Association with Quartz in the Al-Rich](https://www.researchgate.net/publication/282323919/figure/fig4/AS:548609361801217@1507810072468/Representative-field-photographs-of-silica-iron-rich-rocks-from-the-Tyrone-Volcanic.png)
Representative field photographs of silica-iron-rich rocks from the
![Zn-Rich Spinel in Association with Quartz in the Al-Rich](https://www.researchgate.net/publication/239532928/figure/fig10/AS:298647905423398@1448214617964/Saturation-concentration-of-dissolved-Zn-with-respect-to-Zn-rich-kerolite-ZnKer.png)
Saturation concentration of dissolved Zn with respect to Zn-rich
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Biotite-sillimanite-spinel assemblages in high-grade metamorphic rocks : occurrences, chemographic analysis and thermobarometric interest - Persée
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