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Crystal Structure:
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Moore P B , Araki T , American Mineralogist , 60 (1975) p.460-465, Palermoite, SrLi2[Al4(OH)4(PO4)4]: Its atomic arrangement and relationship to, carminite, Pb2[Fe4(OH)4(AsO4)4]
Aggregates - Made of numerous individual crystals or clusters.
Habit:
Fibrous - Crystals made up of fibers.
Hardness:
5.5 - Knife Blade
Luminescence:
Fluorescent, Short UV=white in direct x-ray beam.
Luster:
Vitreous - Adamantine
Streak:
white
Optical Properties of Palermoite
Gladstone-Dale:
CI meas= 0.008 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.014 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1968,KPDmeas= 0.198,KC= 0.1996 Ncalc = 1.64 - 1.65