Meaning & use
celestine
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A pale blue or colorless mineral composed of strontium sulfate, valued by collectors and used as a source of strontium.
See it in a sentence
The geode was lined with delicate blue celestine crystals.
Celestine deposits are mined commercially to extract strontium for fireworks and other industrial uses.
A note on using this word
Also spelled 'celestite'; its name comes from the Latin caelestis, 'heavenly', for its typically sky-blue color.
Words with a similar meaning
celestite
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