Cryptoseudomorphism a new pseudomorphic type /
A new pseudomorphic phenomenon, the so-called cryptopseudomorphism, is discussed here to the first time. This phenomenon is checked against the known types and found that it can not be paramorphic, replacement (substitution) or incrustation pseudomorphism. It is different as well from alteration pse...
Elmentve itt :
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| Dokumentumtípus: | Cikk |
| Megjelent: |
University of Szeged, Department of Mineralogy, Geochemistry and Petrology
Szeged
1985
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| Sorozat: | Acta mineralogica-petrographica
27 |
| Kulcsszavak: | Kőzettan, Ásványtan, Földtan |
| Tárgyszavak: | |
| Online Access: | http://acta.bibl.u-szeged.hu/24734 |
| Tartalmi kivonat: | A new pseudomorphic phenomenon, the so-called cryptopseudomorphism, is discussed here to the first time. This phenomenon is checked against the known types and found that it can not be paramorphic, replacement (substitution) or incrustation pseudomorphism. It is different as well from alteration pseudomorphism because: (1) The new pseudomorphic type is an occult or hidden phenomenon which can not be detected easily except by a combination of several techniques including x-ray diffraction, microscopic examination and chemical analysis. (2) While alteration pseudomorphism is the result of alteration of minerals at mild and more localized environment, the new pseudomorphic phenomenon requires more severe conditions like metamorphism or metasomatism acting on a more or less regional scale. Three examples are given to illustrate this new phenomenon, the most important and most frequent of which is the albitization of basic oligoclase. Studying pseudomorphism of some uranium compounds revealed the presence of a special type called here radioactive pseudomorphism. |
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| Terjedelem/Fizikai jellemzők: | 139-144 |
| ISSN: | 0365-8066 |