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Minerals 2018, 8(3), 100; https://doi.org/10.3390/min8030100

Reflectance Spectral Features and Significant Minerals in Kaishantun Ophiolite Suite, Jilin Province, NE China

1
Institute of Geology, Chinese Academy of Geological Sciences, No. 26 Baiwanzhuang Street, Beijing 100037, China
2
Survey of Regional Geological and Mineral Resource of Jilin Province, No.4177 Chaoda Road, Changchun 130022, China
*
Author to whom correspondence should be addressed.
Received: 28 January 2018 / Revised: 27 February 2018 / Accepted: 28 February 2018 / Published: 5 March 2018
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Abstract

This study used spectrometry to determine the spectral absorption of five types of mafic-ultramafic rocks from the Kaishantun ophiolite suite in Northeast China. Absorption peak wavelengths were determined for peridotite, diabase, basalt, pyroxenite, and gabbro. Glaucophane, actinolite, zoisite, and epidote absorption peaks were also measured, and these were used to distinguish such minerals from other associated minerals in ophiolite suite samples. Combined with their chemical compositions, the blueschist facies (glaucophane + epidote + chlorite) and greenschist facies (actinolite + epidote + chlorite) mineral assemblage was distinct based on its spectral signature. Based on the regional tectonic setting, the Kaishantun ophiolite suite probably experienced the blueschist facies metamorphic peak during subduction and greenschist facies retrograde metamorphism during later slab rollback. View Full-Text
Keywords: reflectance spectrum; ophiolite suite; mineral classification; Kaishantun; NE China reflectance spectrum; ophiolite suite; mineral classification; Kaishantun; NE China
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Shi, C.; Ding, X.; Liu, Y.; Zhou, X. Reflectance Spectral Features and Significant Minerals in Kaishantun Ophiolite Suite, Jilin Province, NE China. Minerals 2018, 8, 100.

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