A plate like crystal (2 x 1.5 x 0.2 µm) having prismatic and pyramidal faces is identified under scanning electron microscope attached with EDAX probe as a ferrian hydroxyl topaz with its structural formula Si4 (Si1.172Al2.296¬Fe3+2.133 Mg0.307Ca0.347Na0.335K0.293Ti0.088P0.053 SO3 0.079) 7.104 (F5.517OH5.482)10.998 on the basis of 24(O, OH, F). It is found as interstitial mineral amidst calcite crystals. The bulk composition of carbonatite indicates that the topaz was formed by crystallization from a residual liquid derived from the carbonatite lava during the course of its rapid consolidation.
| DOI | 10.11648/j.sd.20150306.12 |
| Published in | Science Discovery (Volume 3, Issue 6, December 2015) |
| Page(s) | 50-54 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2024. Published by Science Publishing Group |
Carbonatite Lava, Bimodal Volcanism, Ferrian Hydroxyl Topaz, Residual Fluids, Rapid Consolidation
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APA Style
Ramachandran Ramasamy. (2015). Ferrian Hydroxyl Topaz from a Carbonatite Lapillus from Thiuvalangadu, Tamil Nadu, India. Science Discovery, 3(6), 50-54. https://doi.org/10.11648/j.sd.20150306.12
ACS Style
Ramachandran Ramasamy. Ferrian Hydroxyl Topaz from a Carbonatite Lapillus from Thiuvalangadu, Tamil Nadu, India. Sci. Discov. 2015, 3(6), 50-54. doi: 10.11648/j.sd.20150306.12
AMA Style
Ramachandran Ramasamy. Ferrian Hydroxyl Topaz from a Carbonatite Lapillus from Thiuvalangadu, Tamil Nadu, India. Sci Discov. 2015;3(6):50-54. doi: 10.11648/j.sd.20150306.12
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Download@article{10.11648/j.sd.20150306.12,
author = {Ramachandran Ramasamy},
title = {Ferrian Hydroxyl Topaz from a Carbonatite Lapillus from Thiuvalangadu, Tamil Nadu, India},
journal = {Science Discovery},
volume = {3},
number = {6},
pages = {50-54},
doi = {10.11648/j.sd.20150306.12},
url = {https://doi.org/10.11648/j.sd.20150306.12},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.sd.20150306.12},
abstract = {A plate like crystal (2 x 1.5 x 0.2 µm) having prismatic and pyramidal faces is identified under scanning electron microscope attached with EDAX probe as a ferrian hydroxyl topaz with its structural formula Si4 (Si1.172Al2.296¬Fe3+2.133 Mg0.307Ca0.347Na0.335K0.293Ti0.088P0.053 SO3 0.079) 7.104 (F5.517OH5.482)10.998 on the basis of 24(O, OH, F). It is found as interstitial mineral amidst calcite crystals. The bulk composition of carbonatite indicates that the topaz was formed by crystallization from a residual liquid derived from the carbonatite lava during the course of its rapid consolidation.},
year = {2015}
}
TY - JOUR T1 - Ferrian Hydroxyl Topaz from a Carbonatite Lapillus from Thiuvalangadu, Tamil Nadu, India AU - Ramachandran Ramasamy Y1 - 2015/10/10 PY - 2015 N1 - https://doi.org/10.11648/j.sd.20150306.12 DO - 10.11648/j.sd.20150306.12 T2 - Science Discovery JF - Science Discovery JO - Science Discovery SP - 50 EP - 54 PB - Science Publishing Group SN - 2331-0650 UR - https://doi.org/10.11648/j.sd.20150306.12 AB - A plate like crystal (2 x 1.5 x 0.2 µm) having prismatic and pyramidal faces is identified under scanning electron microscope attached with EDAX probe as a ferrian hydroxyl topaz with its structural formula Si4 (Si1.172Al2.296¬Fe3+2.133 Mg0.307Ca0.347Na0.335K0.293Ti0.088P0.053 SO3 0.079) 7.104 (F5.517OH5.482)10.998 on the basis of 24(O, OH, F). It is found as interstitial mineral amidst calcite crystals. The bulk composition of carbonatite indicates that the topaz was formed by crystallization from a residual liquid derived from the carbonatite lava during the course of its rapid consolidation. VL - 3 IS - 6 ER -
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