Blue stone is a generic mineral description commonly applied to a variety of minerals. Perhaps the most common reference is to the hydrated copper(II) sulfate mineral, chalcanthite. The name "blue stone" is also applicable to lazurite, the core constituent of lapis lazuli, a sulfide of sodium aluminium silicate in the sodalite group.
The term bluestone is also used for the dolerite stones at Stonehenge.
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Famous quotes containing the words blue and/or stone:
“Oh, Scott, for people like you and me the world can be a wonderful place. The sky’s as blue as it is for the giants, the friends are as warm.”
—Richard Matheson (b. 1926)
“I can well conceive a man without hands, feet, head.... But I cannot conceive man without thought; he would be a stone or a brute.”
—Blaise Pascal (1623–1662)