Sodalite vs Hauyne
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Sodalite
Sodalite is a blue to blue-violet tectosilicate mineral in the feldspathoid group, with an ideal composition of Na4Al3Si3O12Cl. First reported in Greenland in 1811, it crystallizes in the cubic system and commonly occurs as massive material in sodium-rich igneous rocks such as nepheline syenite, rather than as large crystals. Opaque blue sodalite, often marked by white veining, is cut into cabocho...
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Hauyne
Hauyne is a rare feldspathoid tectosilicate mineral in the sodalite group, typically found in silica-undersaturated volcanic rocks. Its color ranges from blue to blue-green, and transparent crystals can be cut as gemstones, although most specimens are collected as minerals. The mineral is named after the French crystallographer René Just Haüy and was identified from volcanic material associated wi...
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