Compositional Variations in Natural Mackinawite and the Results of Heating Experiments
Journal of science of the Hiroshima University. Series C, Geology and mineralogy Volume 7 Issue 1
Page 37-53
published_at 1973-03-25
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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/10.15027/53050
| File | |
| Title ( eng ) |
Compositional Variations in Natural Mackinawite and the Results of Heating Experiments
|
| Creator |
ZÔKA Hisanori
TAYLOR Lawrence A.
TAKENO Setsuo
|
| Source Title |
Journal of science of the Hiroshima University. Series C, Geology and mineralogy
|
| Volume | 7 |
| Issue | 1 |
| Start Page | 37 |
| End Page | 53 |
| Abstract |
The compositions of natural mackinawites, (Fe,Ni,Co,Cu)1+x S, from 14 different localities are presented. Heating experiments were performed and the temperature of observed breakdown to pyr-rhotite does not appear to be a function of cation proportions. Indeed, the "breakdown" is not isochemical and involves the addition of sulfur from the surrounding minerals and therefore, is not representative of the upper thermal stability of mackinawite. In most natural occurrences, mackinawite occurs with chalco-pyrite. Based on phase chemistry, this would appear to be a metastable assemblage. However, recent developments, particularly in the Cu—Fe—S system, suggest that at low temperatures several reactions may occur which could thereby permit the stable existence of this assemblage.
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| Language |
eng
|
| Resource Type | departmental bulletin paper |
| Publisher |
HIROSHIMA UNIVERSITY
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| Date of Issued | 1973-03-25 |
| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 0075-4374
[NCID] AA00706718
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