Vesuvianite

n. type of mineral (silicate of calcium and aluminum)

Vesuvianite is a green, brown, yellow, or blue silicate mineral. Vesuvianite occurs as tetragonal crystals in skarn deposits and limestones that have been subjected to contact metamorphism. It was first discovered within included blocks or adjacent to lavas on Mount Vesuvius. A bluish variety known as cyprine has been reported from Franklin, New Jersey and other locations, the blue is due to impurities of copper. Californite is a name sometimes used for jade-like vesuvianite, also known as California-, American- or Vesuvianite-jade. Xanthite is a manganese rich variety. Wiluite is an optically positive variety from Wilui, Siberia. Idocrase is an older synonym sometimes used for gemstone quality vesuvianite.
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Noun
1. a green or yellow or brown mineral consisting of a hydrated silicate; it occurs as crystals in limestone and is used a gemstone
(synonym) vesuvian, idocrase
(hypernym) mineral

n. vesuvianite, type of mineral (silicate of calcium and aluminum)

n. vesuvianite, type of mineral (silicate of calcium and aluminum)