See more at Wikipedia.org...

General Information:
 Chemical Formula:
(Mg,Al)2Si4O10(OH)·4(H2O)
 Composition:
(Molecular Weight = 411.35 gm)
Magnesium 8.86 % Mg
Aluminum 3.28 % Al
Silicon 27.31 % Si
Hydrogen 2.21 % H 
Oxygen 58.34 % O 
 Empirical Formula:
Mg1.5Al0.5Si4O10(OH)·4(H2O)
 Name Origin:
Named after a deposit in the Ural Mountains, Russia.
Physical Properties:
 Cleavage:
[110] Good
 Color:
white, gray, or brownish white.
 Density:
2.1 - 2.2, Average = 2.15
 Diaphaniety:
Translucent
 Habits:
Massive - Fibrous - Distinctly fibrous fine-grained forms., Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).,
 Hardness:
2-2.5 - Gypsum-Finger Nail
 Luster:
Earthy (Dull)
 Streak:
white
More details...

ATTAPULGITE

B: (Kimia) atapulgit

Built to Babylon by Hikmat Gumilar
 Visit my Website;

   

See more at Wikipedia.org...

General Information:
 Chemical Formula:
(Mg,Al)2Si4O10(OH)·4(H2O)
 Composition:
(Molecular Weight = 411.35 gm)
Magnesium 8.86 % Mg
Aluminum 3.28 % Al
Silicon 27.31 % Si
Hydrogen 2.21 % H 
Oxygen 58.34 % O 
 Empirical Formula:
Mg1.5Al0.5Si4O10(OH)·4(H2O)
 Name Origin:
Named after a deposit in the Ural Mountains, Russia.
Physical Properties:
 Cleavage:
[110] Good
 Color:
white, gray, or brownish white.
 Density:
2.1 - 2.2, Average = 2.15
 Diaphaniety:
Translucent
 Habits:
Massive - Fibrous - Distinctly fibrous fine-grained forms., Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).,
 Hardness:
2-2.5 - Gypsum-Finger Nail
 Luster:
Earthy (Dull)
 Streak:
white
More details...

ATTAPULGITE

B: (Kimia) atapulgit

Built to Babylon by Hikmat Gumilar
 Visit my Website;