THE SYSTEM OF CARBONATE EQUILIBRIA
1959; Taylor & Francis; Volume: 1; Issue: 10 Linguagem: Inglês
10.1080/00206815909473450
ISSN1938-2839
AutoresA.V. Kazakov, М.М. Тихомирова, V. I. Plotnikova,
Tópico(s)Global Energy and Sustainability Research
ResumoAbstract The occurrence of dolomites with phosphorites in geosynclinal areas of the U. S. S. R. , the wide distribution of dolomitic sediments in the Paleozoic and their absence in the Jurassic and Cretaceous of the Russian platform, and the absence of dolomite formation in modern marine sediments have led to the study of their origin. The possibility of a simultaneous (synchronous) development of phosphorites and dolomites (magnesites) is excluded. Concurrence is explained by subsequent impositions of diagenetic and epigenetic dolomites on previously deposited phosphate. Primary dolomites are negative prospecting indicators for phosphorites; secondary dolomites are not. Analysis of magnesite and dolomite systems at the 20°, 60°, and 150°C isotherms is offered in the experimental part of this report. Fields of crystallization and stability are defined for nesquehonite, magnesite, dolomite, basic magnesium carbonate (artinite and hydromagnesite), and brucite systems. G. E. Denegar
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