The Chemical Composition of Trapiche-like Quartz from Huanggangliang Area, Inner Mongolia, China
Trapiche-like quartz, which is found in Huanggangliang area, Chifeng City, Inner Mongolia, China, has a short columnar euhedral shape. Arms of trapiche-like phenomena are formed by six radial dark bands located along the <i>a</i>-axis of crystals, and their cores are formed by color zone...
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MDPI AG
2022-01-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/12/1/122 |
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| author | Ling Jiang Zhu Chen Yingxin Liu |
| author_facet | Ling Jiang Zhu Chen Yingxin Liu |
| author_sort | Ling Jiang |
| collection | DOAJ |
| description | Trapiche-like quartz, which is found in Huanggangliang area, Chifeng City, Inner Mongolia, China, has a short columnar euhedral shape. Arms of trapiche-like phenomena are formed by six radial dark bands located along the <i>a</i>-axis of crystals, and their cores are formed by color zones. Various methods were used to investigate the conventional gemological characteristics, trapiche pattern features, chemical compositions, and spectral characteristics of the trapiche-like quartz. CL images and EPMA results reveal they were formed at high temperature conditions and originated from pegmatite. The hexagonal darker zones with high FeO and very little TiO<sub>2</sub> contents indicate the trapiche-like patterns are due to spatial distribution of color-inducing elements. According to the position and interpenetration relationship between inclusions, fibrous and spherical inclusions are identified as protogenetic inclusions, which were respectively identified to be ferro-actinolite and iron oxide by EPMA and Raman spectra. |
| first_indexed | 2024-03-10T01:40:55Z |
| format | Article |
| id | doaj.art-fad3f2226e4b4fc8bc657621b5315dd9 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T01:40:55Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-fad3f2226e4b4fc8bc657621b5315dd92023-11-23T13:25:35ZengMDPI AGCrystals2073-43522022-01-0112112210.3390/cryst12010122The Chemical Composition of Trapiche-like Quartz from Huanggangliang Area, Inner Mongolia, ChinaLing Jiang0Zhu Chen1Yingxin Liu2School of Gemmology, China University of Geosciences, Beijing 100083, ChinaSchool of Gemmology, China University of Geosciences, Beijing 100083, ChinaSchool of Gemmology, China University of Geosciences, Beijing 100083, ChinaTrapiche-like quartz, which is found in Huanggangliang area, Chifeng City, Inner Mongolia, China, has a short columnar euhedral shape. Arms of trapiche-like phenomena are formed by six radial dark bands located along the <i>a</i>-axis of crystals, and their cores are formed by color zones. Various methods were used to investigate the conventional gemological characteristics, trapiche pattern features, chemical compositions, and spectral characteristics of the trapiche-like quartz. CL images and EPMA results reveal they were formed at high temperature conditions and originated from pegmatite. The hexagonal darker zones with high FeO and very little TiO<sub>2</sub> contents indicate the trapiche-like patterns are due to spatial distribution of color-inducing elements. According to the position and interpenetration relationship between inclusions, fibrous and spherical inclusions are identified as protogenetic inclusions, which were respectively identified to be ferro-actinolite and iron oxide by EPMA and Raman spectra.https://www.mdpi.com/2073-4352/12/1/122trapiche-like quartzHuanggangliangcolor zonesinclusions |
| spellingShingle | Ling Jiang Zhu Chen Yingxin Liu The Chemical Composition of Trapiche-like Quartz from Huanggangliang Area, Inner Mongolia, China Crystals trapiche-like quartz Huanggangliang color zones inclusions |
| title | The Chemical Composition of Trapiche-like Quartz from Huanggangliang Area, Inner Mongolia, China |
| title_full | The Chemical Composition of Trapiche-like Quartz from Huanggangliang Area, Inner Mongolia, China |
| title_fullStr | The Chemical Composition of Trapiche-like Quartz from Huanggangliang Area, Inner Mongolia, China |
| title_full_unstemmed | The Chemical Composition of Trapiche-like Quartz from Huanggangliang Area, Inner Mongolia, China |
| title_short | The Chemical Composition of Trapiche-like Quartz from Huanggangliang Area, Inner Mongolia, China |
| title_sort | chemical composition of trapiche like quartz from huanggangliang area inner mongolia china |
| topic | trapiche-like quartz Huanggangliang color zones inclusions |
| url | https://www.mdpi.com/2073-4352/12/1/122 |
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