Oxammite

oxammite

mascagnite

guano

organic compound

Images

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

Guano deposits

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 Petrogale Cave, Madura Roadhouse, Dundas Shire, Western Australia, oxammite has been found in bat guano (Mindat photo).
Oxammite from the Petrogale Cave - Image

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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