montmorillonite – מילון אנגלי-אנגלי
montmorillonite
n.
any of a type of clay minerals (used as an additive to a drilling mud)
Montmorillonite
Montmorillonit (das)
n.
montmorillonite, any of a type of clay minerals (used as an additive to a drilling mud)
montmorillonite
nf.
montmorillonite, any of a type of clay minerals (used as an additive to a drilling mud)
Montmorillonite
General Information: Chemical Formula:(Na,Ca)0,3(Al,Mg)2Si4O10(OH)2·n(H2O)
Composition:(Molecular Weight = 540.47 gm)
Aluminum 9.98 %
AlSilicon 20.79 %
SiHydrogen 4.10 %
H Oxygen 65.13 %
O Empirical Formula: Al2Si4O10(OH)2(H2O)10
Locality:Veinne, Montmorillone, France.
Name Origin:Named after the locality.
Physical Properties: Cleavage:[001] Perfect
Color:white, gray white, yellow, brownish yellow, or greenish yellow.
Density:2 - 2.7, Average = 2.35
Diaphaniety:Translucent to Opaque
Habits:Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite)., ,
Hardness:1.5-2 - Talc-Gypsum
Luminescence:None.
Luster:Earthy (Dull)
Streak:white
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Beidellite
General Information: Chemical Formula:Na0.5Al2(Si3.5Al0.5)O10(OH)2·n(H2O)
Composition:(Molecular Weight = 389.27 gm)
Sodium 2.95 %
NaAluminum 17.33 %
AlSilicon 25.25 %
SiHydrogen 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...