方钠石
The mineral sodalite is named for its sodium content. As a gemstone, sodalite is usually blue, often with a violet tint, and frequently contains white veins of calcite. It is a slightly soft material (5.5 to 6 on the Mohs scale) with a relatively low density. Sodalite is found in Brazil, Greenland, India, Canada, the USA (Montana), Namibia and Russia.
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