General Information:
Chemical Formula:
Na0.5Al2(Si3.5Al0.5)O10(OH)2·n(H2O)
Composition:
(Molecular Weight = 389.27 gm)
Sodium 2.95 % Na
Aluminum 17.33 % Al
Silicon 25.25 % Si
Hydrogen 1.04 % H
Oxygen 53.43 % O
Empirical Formula:
Na0.5Al2.5Si3.5O10(OH)2·(H2O)
Locality:
Beidell, Colorado, USA..
Name Origin:
Named after its locality.
Physical Properties:
Cleavage:
[001] Perfect
Color:
white, gray, reddish white, brownish white, or pale yellow.
Density:
2 - 2.3, Average = 2.15
Diaphaniety:
Translucent to subtranslucent
Habits:
Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite)., ,
Hardness:
1-2 - Between Talc and Gypsum
Luminescence:
Non-fluorescent.
Luster:
Earthy (Dull)
Streak:
white
More details...