General Information:
Chemical Formula:
(NH4)2Ca(HPO4)2·(H2O)
Composition:
(Molecular Weight = 286.13 gm)
Calcium 14.01 % Ca
Phosphorus 21.65 % P
Hydrogen 4.23 % H
Nitrogen 9.79 % N
Oxygen 50.33 % O
Empirical Formula:
(NH4)2·(H2O)Ca(HPO4)2
Environment:
Dolomite walls of the Arnhem cave.
IMA Status:
Approved IMA
Locality:
Windhoek, Namibia.
Name Origin:
Named for the acronym for the Siud Wes Aftica Karst Navorsing Organisasie (SWANKNO), a speleological association in Namibia.
Physical Properties:
Color:
white.
Density:
1.91
Diaphaniety:
Transparent
Habits:
Rosette - Bundled tabular aggregates resembling rose flower petals., Acicular - Occurs as needle-like crystals.,
Hardness:
1.5-2 - Talc-Gypsum
Luster:
Vitreous (Glassy)
Streak:
white
More details...