bytownite
mineral
Quick Summary
Bowen's reaction series
Figure 5: Bowen's reaction series showing the sequence of minerals that would be formed and removed during fractional crystallization of a melt. The magmas relating to the crystallizing minerals are shown on the left.
Bytownite is a mineral belonging to the plagioclase feldspar group. It is a solid-solution series composed of 10 to 30 percent albite (sodium aluminosilicate) and 70 to 90 percent anorthite (calcium aluminosilicate). Plagioclase feldspars are abundant, light-colored, glassy minerals that are essential components of many rocks. Bytownite, specifically, is a rarer member of this series and is found in basic igneous rocks and stony meteorites. The name "bytownite" originates from Bytown, which is now Ottawa, Canada.12
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