 | | Book | | from the study of the systems leucite–albite and leucite–albite–anothite under atmospheric pressure. These...detailed study of the system leucite-akermanite-albite-SiO2, studied under one atmospheric pressure by...Similar studies on the system leucite-akermanite-albite with or without anorthite have been conducted by...46°09′E) . . . . . . . . . . . . . . . 4.12.3 Pkhrutskii (38°51′N, 48°10′E) . . . . . . . . . . . . ....Join Leucite–Albite under Atmospheric Pressure . . . . . . . . . . . 8.2.2 The Leucite–Albite–Anorthite |  | | Book | | considers it to be a multiple intru sion in which albite syenites were emplaced as the first phase, followed...[= ==a Quartz nordmarkite (foliated) rxxxl ~ Albite granosyenite ~ Archaean biotite gneiss Fig....principal minerals are microcline, nepheline, aegirine, albite and minor apatite, calcite, prehnite, pyrochlore...main rock-forming minerals are quartz, microcline, albite, aegirine and alkaline amphibole with the principal...which they nephelinized. The syenites comprise albite, microcline, biotite and ferrohastingsite with |
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