Phyllosilicates Flashcards
General formula of phyllosilicates
Si2O5
is an aluminum hydroxide mineral with the chemical formula Al(OH)3
Gibbsite
magnesium hydroxide mineral with the chemical formula mg(OH)3
Brucite
Mg2 Al (Si2O5) (OH)4
Amesite
Cu2 (Si2O5) (OH)4
Chrysocolla
Mg3 (SiO5) (OH)4
Distinguishing feature:
Platy habit
Lizardite
Mg3 (SiO5) (OH)4
Distinguishing feature:
Platy and straited habit
Antigorite
Mg3 (SiO5) (OH)4
Distinguishing feature:
Fibrous habit
Chrysotile
Chrysotile alias
White asbestos
Made up of layered structures of fine- grained minerals (size lower than 0.002mm)
Clay minerals
is a special type of polymorphism that is usually used to describe the variation of structures and sequences in layered materials.
Polytypism
refers to a process whereby a mineral occurs where it is found
Authigenesis
Mg3 (Si2O5)2 (OH)2
Talc
Talc alias
Soapstone
Al2 (Si2O5)2 (OH)2
Pyrophyllite
A clay mineral that has a distinguishing feature of radial habir or fan like
Pyrophyllite
Al2 Si2O5 (OH)4
Kaolinite
Kaolinite alias
China clay