Discontinuously Zoned Garnet in Sambagawa Schist from Central Shikoku, Japan
Journal of science of the Hiroshima University. Series C, Geology and mineralogy Volume 8 Issue 1
Page 51-58
published_at 1983-06-18
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この文献の参照には次のURLをご利用ください : https://doi.org/10.15027/50537
| File | |
| Title ( eng ) |
Discontinuously Zoned Garnet in Sambagawa Schist from Central Shikoku, Japan
|
| Creator |
HARA Ikuo
HIDE Kei
SEO Takafumi
MAEDA Masaru
|
| Source Title |
Journal of science of the Hiroshima University. Series C, Geology and mineralogy
|
| Volume | 8 |
| Issue | 1 |
| Start Page | 51 |
| End Page | 58 |
| Abstract |
The garnets in the Sambagawa siliceous pelitic schist from Tomisato, Central Shikoku,Japan, which have been described in this paper, belong to the type of reverse-zoned garnet. From zoning profiles for MnO and FeO and electron beam scanning images, individual garnet grains appear to be divided into four zones, core, intermediate zone, mantle and reverse zone in the rim. And the chemical composition changes discontinuously by about 9% for MnO between the outer part of the core (=ca. 32% for MnO) and the inner part of the intermediate zone and by about 7.2-16.5% for MnO between the outer part of the intermediate zone (=ca. 19.5-10.1% for MnO) and the inner part of the mantle. The garnets in the present specimen, therefore, will be newly designated as discontinuously zoned garnet.
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| Language |
eng
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| Resource Type | departmental bulletin paper |
| Publisher |
Hiroshima University
|
| Date of Issued | 1983-06-18 |
| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 0075-4374
[NCID] AA00706718
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