Nitrocalcite

nitrocalcite

niter

nitromagnesite

nesquehonite

Images

Formula: Ca(NO3)2.4H2O
Normal nitrate
Specific gravity: 1.9
Hardness: 1 to 2
Streak: White
Colour: White, grey, colourless in transmitted light
Solubility: Readily soluble in water
Environments

Hydrothermal environments

Nitrocalcite occurs as efflorescences in limestone caves where it is associated with niter and nitromagnesite, and on alkaline soils, which may be seasonal. (Mindat, HOM).

Localities

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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