Residual water-soluble surface deposits in extremely arid deserts. Nitrates occur in clay rich caliche deposits replenished by occasional desert thunderstorms which fix N2 from the air.
IMA Status:
Valid Species (Pre-IMA) 1845
Locality:
Confidence Hills, southern Death Valley. Atacam desert, Chile. Link to MinDat.org Location Data.
Name Origin:
Named after its composition of containing nitrates.