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andalusite
(an′də lo̵̅o̅′sīt′)
noun
a very hard, orthorhombic silicate of aluminum, AlSiO, usually found in schist, slate, or other metamorphic rocks and used to make various high-temperature materials and as a gem
Origin: after Andalusia, where it was discovered
See andalusite in American Heritage Dictionary 4
noun
A mineral, aluminum silicate (Al2SiO5), usually found in orthorhombic crystals of various colors.
Origin:
Origin: After Andalusia
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