Mineralogical Composition of Leucite-Bearing Rocks
The most commonly occurring minerals found in these leucite-bearing rocks are leucite, clinopyroxene, plagioclase, potash feldspar, nepheline, and olivine. When plagioclase is present, melilite is absent. Phlogopite and potash richterite are fairly common. Accessory minerals include: biotite, perovskite, wadeite, priderite, apatite, magnetite, ilmenite, and spinel. Different combinations of the above minerals are present in the various types of leucite-bearing rocks. The phase chemistry and chemical variation of these minerals are described below. The phase equilibrium relations among these minerals will be discussed in the later sections.
KeywordsZeolite Magnetite Perovskite Apatite Rutile
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