Nitratine

The typical form is as coatings of white, grey to yellowish brown masses. The rare crystals when found typically have the scalenohedral form of the calcite structure. It is found only as an efflorescence in very dry environments. It is very soluble in water such that it is deliquescent and will absorb water out of the air and turn into a puddle of...
Found on http://en.wikipedia.org/wiki/Nitratine

Nitratine

• (n.) A mineral occurring in transparent crystals, usually of a white, sometimes of a reddish gray, or lemon-yellow, color; native sodium nitrate. It is used in making nitric acid and for manure. Called also soda niter. • (n.) A mineral occurring in transparent crystals, usually of a white, sometimes of a reddish gray, or lemon-yellow, c...
Found on http://thinkexist.com/dictionary/meaning/nitratine/

Nitratine

Ni'tra┬Ětine noun (Min.) A mineral occurring in transparent crystals, usually of a white, sometimes of a reddish gray, or lemon-yellow, color; native sodium nitrate. It is used in making nitric acid and for manure. Called also soda niter .
Found on http://www.encyclo.co.uk/webster/N/24
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