Oxidization zone of nickel-bearing hydrothermal mineral deposits, formed from H2O solution between 31.5 deg C and 53.5 deg C. Dimorphous with nickelhexahydrite.
IMA Status:
Valid Species (Pre-IMA) 1949
Locality:
Cottonwood Canyon, Nevada. Link to MinDat.org Location Data.
Name Origin:
Named for Jan Willem Retgers (1856-1896), Dutch physical chemist and chemical crystallographer.