Specific gravity: 1.9
Hardness: 1 to 2
Colour: White, grey, colourless in transmitted light
Solubility: Readily soluble in water
Nitrocalcite occurs as efflorescences in limestone caves where
it is associated with niter and
nitromagnesite, and on alkaline soils, which may be seasonal.
In Unnamed caves at Paddy's River Cu Mine, Cotter River, Australian Capital Territory, Australia, nitrocalcite is associated with alunite, aragonite, berlinite, apatite variety collophane, crandallite, francoanellite, gypsum, huntite, hydromagnesite, leucophosphite, nesquehonite and niter (HOM).
The type locality is the Nicajack Cave, Marion county, Tennessee, USA.
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