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Bish D L , Von Dreele R B , Clays and Clay Minerals , 37 (1989) p.289-296, Rietveld refinement of non-hydrogen atomic positions in kaolinite, Locality: Keokuk, Iowa, USA, Note: clay
View Additional jPOWD Structure files for Kaolinite
[1]
Earthy - Dull, clay-like fractures with no visible crystalline affinities, (e.g. howlite).
Habit:
Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).
Hardness:
1.5-2 - Talc-Gypsum
Luminescence:
Non-fluorescent.
Luster:
Earthy (Dull)
Streak:
white
Optical Properties of Kaolinite
Gladstone-Dale:
CI meas= 0.043 (Good) - where the CI = (1-KPDmeas/KC) CI calc= 0.05 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2146,KPDmeas= 0.2163,KC= 0.226 Ncalc = 1.59