Browsing ELibrary by Author "Safonov O.G."

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ALKALI ACTIVITY DURING METAMORPHISM OF SOME GONDWANIAN COMPLEXES

Safonov O.G.; Gerya T.V.; Perchuk L.L. (2001)
CRYSTAL-MELT EQUILIBRIA INVOLVING POTASSIUM-BEARING CLINOPYROXENE AS INDICATOR OF MANTLE-DERIVED ULTRAHIGH-POTASSIC LIQUIDS: AN ANALYTICAL REVIEW

Perchuk L.L.; Safonov O.G.; Yapaskurt V.O.; Barton Jr.J.M. (2002)

Crystal–liquid equilibria, including phase relationships of minerals with silicate and/or carbonate melts, are reviewed in order to understand the occurrence of clinopyroxene with up to 2 wt.% K2O (KCpx). This mineral ...
EXPERIMENTAL STUDY OF SOME JOINS IN THE SYSTEM CAMGSI2O6-(CA,MG)3AL2SI3O 12-KALSI2O6-K2(CA,MG)(CO3 )2 AT 5-7 GPA IN RELATION TO THE GENESIS OF GARNET-CLINOPYROXENE-CARBONATE ROCKS OF THE KOKCHETAV COMPLEX, NORTHERN KAZAKHSTAN

Safonov O.G.; Litvin Yu.A.; Matveev Yu.A.; Perchuk L.L. (2002)

An experimental study of the CaMgSi2O6-Ca3Al2Si3O12-K2Mg(CO3)2, CaMgSi2O6-Mg3Al2Si3O12-K2Ca(CO3)2 and CaMgSi2O6-KAlSi2O6 joins of the carbonate-silicate system CaMgSi2O6-(Ca,Mg)3Al2Si3O 12-KAlSi2O6-K2(Ca,Mg)(CO3 )2 was ...
PHASE RELATIONS OF POTASSIUM-BEARING CLINOPYROXENE IN THE SYSTEM CAMGSI2O6-KALSI2O6 AT 7 GPA

Safonov O.G.; Litvin Y.A.; Perchuk L.L.; Bindi L.; Menchetti S. (2003)

The pseudo-binary system CaMgSi2O6-KAlSi2O6, modeling the potassium-bearing clinopyroxene (KCpx) solid solution, has been studied at 7GPa and 1,100–1,650C. The KCpx is a liquidus phase of the system up to 60mol% of KAlSi2O6. ...
SYNTHESIS OF OMPHACITES AND ISOMORPHIC FEATURES OF CLINOPYROXENES IN THE SYSTEM CAMGSI2O6-NAALSI2O 6-KALSI2O6

Safonov O.G.; Litvin Yu.A.; Perchuk L.L. (2004)

Omphacites with varying Na/K ratio were synthesized in the system CaMgSi2O6-NaAlSi2O6-KAlSi 2O6 at pressures of 5, 6, and 7 GPa within the temperature interval 1000-1300°C. It was found that both K and Na contents of ...
ULTRAHIGH POTASSIUM CONTENT IN THE CLINOPYROXENE STRUCTURE: AN X-RAY SINGLE-CRYSTAL STUDY

Bindi L.; Safonov O.G.; Litvin Y.A.; Perchuk L.L.; Menchetti S. (2002)

The crystal structures and chemical compositions of two crystals of clinopyroxene (labelled K1 and K2) synthesized in the model system CaMgSi 2 O 6 -KAlSi 2 O 6 at 7 GPa, have been investigated. Quantitative analysis leads ...
ULTRAPOTASSIC CLINOPYROXENE FROM THE KUMDY-KOL MICRODIAMOND MINE, KOKCHETAV COMPLEX, KAZAKHSTAN: OCCURRENCE, COMPOSITION AND CRYSTAL-CHEMICAL CHARACTERIZATION

Bindi L.; Menchetti S.; Safonov O.G.; Yapaskurt V.O.; Perchuk L.L. (2003)

We report data on the composition and crystal structure of the most K-rich (3.61 wt% K2O) natural clinopyroxene yet discovered. The studied crystal was found as a tiny inclusion in garnet from a garnet-clinopyroxene rock ...

Browsing ELibrary by Author "Safonov O.G."

Browsing ELibrary by Author "Safonov O.G."

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