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Formula: (NH4)2(C2O4).H2O
Organic compound
Crystal System: Orthorhombic
Specific gravity: 1.5 measured, 1.541 calculated
Hardness: 2½
Streak: White
Colour: Colourless to pale yellow, colourless in transmitted light
Solubility: Soluble in water
Environments
Oxammite is an organic mineral derived from guano; it is also found in sub-fossil bird eggs and on sub-fossil
birds
(HOM).
Localities
At the type locality, the Guañape Islands, Virù Province, La Libertad, Peru, oxammite has been found as
very delicate but perfect crystals associated with mascagnite in bird
guano deposits
(Mindat).
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