Microscopic Crystals - Crystals visible only with microscopes.
Habit:
Platy - Sheet forms (e.g. micas).
Hardness:
2 - Gypsum
Streak:
yellow
Optical Properties of Schoderite
Gladstone-Dale:
CI meas= -0.071 (Fair) - where the CI = (1-KPDmeas/KC) CI calc= -0.033 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2885,KPDmeas= 0.2993,KC= 0.2795 Ncalc = 1.53 - 1.54