Liquid Immiscibility in Fluid–Magmatic Systems: An Experimental Study
- Авторлар: Kotelnikov A.R.1, Suk N.I.1, Kotelnikova Z.A.2, Yanev Y.3, Encheva S.4, Ananiev V.V.5
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Мекемелер:
- Korzhinskii Institute of Experimental Mineralogy (IEM), Russian Academy of Sciences
- Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry (IGEM), Russian Academy of Sciences
- Geological Institute, Bulgarian Academy of Sciences
- Earth and Man National Museum
- Institute of Volcanology and Seismology, Far East Branch, Russian Academy of Sciences
- Шығарылым: Том 27, № 2 (2019)
- Беттер: 186-201
- Бөлім: Article
- URL: https://journals.rcsi.science/0869-5911/article/view/177688
- DOI: https://doi.org/10.1134/S0869591119020048
- ID: 177688
Дәйексөз келтіру
Аннотация
Liquid immiscibility was studied in melting experiments in the system trachyrhyolite–water ± salt (NaF, Na2CO3) conducted at parameters imitating those of the volcanic process. The indicator components were La, Nb, Sr, W, Mo, Cr, Fe, Rb, and Cs. The experimental runs were carried out in a high gas pressure apparatus. At 1200ºC and 5 kbar, melting, homogenization, and melt saturation with fluid components occurred. A decrease in the P–T parameters to 1000°C and 1 kbar led to the onset of liquid immiscibility in the form of droplets in the melt matrix. The composition of the droplets is similar to that of the melt matrix and differs from the latter only in concentrations of water, indicator components, and proportions of alkaline and alkali-earth elements. In the presence of salt (NaF), the melt exsolved into immiscible silicate and salt melts. No liquid immiscibility was detected when Na carbonate was added to the melt, but its agpaitic coefficient increased.
Негізгі сөздер
Авторлар туралы
A. Kotelnikov
Korzhinskii Institute of Experimental Mineralogy (IEM), Russian Academy of Sciences
Хат алмасуға жауапты Автор.
Email: kotelnik@iem.ac.ru
Ресей, Chernogolovka, Moscow oblast, 142432
N. Suk
Korzhinskii Institute of Experimental Mineralogy (IEM), Russian Academy of Sciences
Хат алмасуға жауапты Автор.
Email: sukni@iem.ac.ru
Ресей, Chernogolovka, Moscow oblast, 142432
Z. Kotelnikova
Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry (IGEM),Russian Academy of Sciences
Хат алмасуға жауапты Автор.
Email: kotelnik@igem.ac.ru
Ресей, Moscow, 119017
Y. Yanev
Geological Institute, Bulgarian Academy of Sciences
Email: kotelnik@igem.ac.ru
Болгария, Sofia, 1113
S. Encheva
Earth and Man National Museum
Email: kotelnik@igem.ac.ru
Болгария, Sofia, 1421
V. Ananiev
Institute of Volcanology and Seismology, Far East Branch, Russian Academy of Sciences
Email: kotelnik@igem.ac.ru
Ресей, Petropavlosk-Kamchatskii, 683006
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