Thermal Studies on Mackinawite
Journal of science of the Hiroshima University. Series C, Geology and mineralogy Volume 4 Issue 4
Page 455-478
published_at 1965-05-15
アクセス数 : 157 件
ダウンロード数 : 31 件
今月のアクセス数 : 4 件
今月のダウンロード数 : 1 件
この文献の参照には次のURLをご利用ください : https://doi.org/10.15027/53016
| File | |
| Title ( eng ) |
Thermal Studies on Mackinawite
|
| Creator |
TAKENO Setsuo
|
| Source Title |
Journal of science of the Hiroshima University. Series C, Geology and mineralogy
|
| Volume | 4 |
| Issue | 4 |
| Start Page | 455 |
| End Page | 478 |
| Abstract |
On mackinawite mistaken for valleriite, the specimens obtained from eleven localities have been investigated especially concerning its thermal behaviors. Those discriminated under the reflection microscope on the basis of their optical characters revealing abrupt change at 130°C～250°C are classifiable into A) Kawayama type (including the specimen from Mackinaw) losing its extraordinary pleochroism and anisotropism at 130°C～160°C, B) Kômori type (including those from Muskox, Tsumo, Akagane and Ohmine) showing the similar variation at intermediate temperature and C) Outokumpu type (including those from Makimine, Besshi and Shimokawa doing so above 200°C, among which the third type only discloses transformation from mackinawite to pyrrhotite. A considerable difference in transformation temperature is commonly observable even in the specimens collected from the same locality.
True valleriite, on the other hand, is stable at the temperature lower than about 500°C. |
| Language |
eng
|
| Resource Type | departmental bulletin paper |
| Publisher |
HIROSHIMA UNIVERSITY
|
| Date of Issued | 1965-05-15 |
| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 0075-4374
[NCID] AA00706718
|
