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Khan A A , Baur W H , Forbes W C , Acta Crystallographica, Section B , 28 (1972) p.267-272, Synthetic magnesian merrihueite, dipotassium pentamagnesium dodecasilicate:, a tetrahedral magnesiosilicate framework crystal structure, Locality: synthetic
Physical Properties of Merrihueite
Color:
Greenish blue.
Density:
2.87
Diaphaneity:
Transparent
Hardness:
5-6 - Between Apatite and Orthoclase
Luster:
Vitreous (Glassy)
Streak:
white
Optical Properties of Merrihueite
Gladstone-Dale:
CI meas= 0.011 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.028 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1961,KPDmeas= 0.1996,KC= 0.2019 Ncalc = 1.58 - 1.59