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Khan A A , Baur W H , Acta Crystallographica, Section B , 28 (1972) p.683-693, Salt hydrates. VIII. The crystal structures of sodium ammonium orthochromate, dihydrate and magnesium diammonium bis(hydrogen orthophosphate) tetrahydrate, and a discussion of the ammonium ion, Locality: synthetic
Physical Properties of Schertelite
Cleavage:
None
Color:
Colorless.
Density:
1.83
Diaphaneity:
Transparent
Fracture:
Brittle - Generally displayed by glasses and most non-metallic minerals.
Luster:
Vitreous (Glassy)
Streak:
white
Optical Properties of Schertelite
Gladstone-Dale:
CI meas= -0.413 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= -0.405 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2801,KPDmeas= 0.2816,KC= 0.1993 Ncalc = 1.36 - 1.37