albite
Noun
Meaning
A mineral of the feldspar family, triclinic in crystallization, and in composition a silicate of alumina and soda. It is a common constituent of granite and of various igneous rocks. See Feldspar.
Source: Webster's dictionarySynonyms
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There are several named plagioclase feldspars that fall between albite and anorthite in the series.
Feldspar (Amazonite) Perthite is either microcline or orthoclase with thin lamellae of exsolved albite.
Some intergrowths of orthoclase and albite have an attractive pale luster and are called moonstone when used in jewellery.
Intermediate members of this series, high albite, anorthoclase and high sodium sanidine are stable at temperatures of convert and above.
In this case, the solubility of albite is expected to depend on the solid-to-solvent ratio.
The following table shows their compositions in terms of constituent anorthite and albite percentages.