JAMALAM LUMBANRAJA
BAB TIGABELAS
MINERAL LIAT TANAH
Tabel 13.2. Jenis mineral mika (Fanning, Keramidas, and El-Desoky, 1989) No
Nama
Dioktahedral
Rumus molekul Kation
tetrahedral
oktahedral
anion
1.
Muskovit
K
Si3Al
Al2
O10(OH)2
2.
Paragonit
Na
Si3Al
Al2
O10(OH)2
3.
Margarit
Ca
Si2Al2
Al2
O10(OH)2
4.
Glaukonit (a)
K0,65Na0,03
Si3,87Al0,11
Al0,63FeIII0,82FeII0,19 Mg0,36
O10(OH)2
5.
Glaukonit (b)
K0,81Ca0,02
Si3,75Al0,25
Al0,36FeIII0,98FeII0,24 Mg0,45
O10(OH)2
6.
Illit (a)
K0,61Na0,02
Si3,34Al0,66
Al1,29FeIII0,41FeII0,19 Mg0,18Ti0,04
O10(OH)2
7.
Illit (b)
K0,97Ca0,01
Si3,96Al0,04
Al0,18FeIII0,87FeII0,24 Mg0,71
O10(OH)2
Trioktahedral 1.
Biotit
K
Si3Al
(Mg,Fe)3
O10(OH)2
2.
Flogopit
K
Si3Al
Mg3
O10(OH)2
3.
Klintonit
Ca
SiAl3
Mg2Al
O10(OH)2
4.
Lepidolit
K0,862Na0,001 Ca0,006
Si3,532Al0,464
Al1,285FeIII0,006MnII0,005 Mg0,003Ti0,005Li1,584
O10(OH)2
150