Memorizables - Silicates Flashcards
SIO Ratios of SIlicates
Neso = 1:4
Soro = 2 :7
Ino S = : 1 :3
Ino D = 4 :11
Cyl = 1: 3
Phy = 2 : 5
Tecto 1 :2
Nesosilicate Groups
G - A - O - H
Garnet
Aluminosilicates
Olivine
Humite
Garnet Crys Sys
- I
- C
- O
- M”
C
Olivine Crys Sys
- I
- A
- O
- M
O
Pyrope
- Mg2Al2 Si3O12
- Fe3 Al2 Si3O12
- Mn3Al2 Si3O12
- Mg2Al2 Si3O12 = Pyrope
- Fe3 Al2 Si3O12 = Alamandine
- Mn3Al2 Si3O12 = Spessartine
Grossular
- Mn3Al2 Si3O12
- Ca3Cr2 Si3O12
- Ca3Fe2 Si3O12
- Mn3Al2 Si3O12 = Grossular
- Ca3Fe2 Si3O12 = Andradite
- Ca3Cr2 Si3O12 = Uvarovite
Fe/Mn Grossular
- Topazolite
- Melanite
- Demantoid
- Hessonite
- Tsavorite
[Andradite]
- Topazolite = V
- Melanite = Ti
- Demantoid = Cr
[Grossular]
- Hessonite = Fe/Mn
- Tsavorite = Cr/V
V Andradite
- Topazolite
- Melanite
- Demantoid
- Hessonite
- Tsavorite
[Andradite]
- Topazolite = V
- Melanite = Ti
- Demantoid = Cr
[Grossular]
- Hessonite = Fe/Mn
- Tsavorite = Cr/V
Tephroite
- Mg2 SiO4
- Fe2 SiO4
- Mn2 SiO4
- CaMg2 SiO4
- Mg2 SiO4 = Forsterite
- Fe2 SiO4 = Fayalite
- Mn2 SiO4 = Tephroite
- CaMg2 SiO4 = Monticellite
Kirstenite
- Mg2 SiO4
- Fe2 SiO4
- CaFe2 SiO4
- Ca2 SiO4
- CaFe2 SiO4 = Kirstenite
- Ca2 SiO4 = Larnite
Chrodroite ( Humite Grp)
- Mg3 SiO4(OH,F)2
- Mg5 (SiO4)2(OH,F)2
- Mg9 (SiO4)4(OH,F)2
- Mg3 SiO4(OH,F)2 = Norbergite (O)
- Mg5 (SiO4)2(OH,F)2 =Chondrodite (M)
- Mg9 (SiO4)4(OH,F)2 = Clinohumite (M)
Topaz
- Fe2Al9 Si4O23(OH)
- (FeMg)Al2 SiO5(OH)
- CaTi SiO5
- Al2 SiO4(F,OH)2
- Fe2Al9 Si4O23(OH) = Staurolite (M)
- (FeMg)Al2 SiO5(OH) = Chloritoid (M)
- CaTi SiO5 = Titanite/Sphene (M)
- Al2 SiO4(F,OH)2 = Topaz (O)
Mukhinite
- Zn4 Si2O7(OH)2 H2O
- Ca10 (Mg,Fe)2 Al4Si9O34 (OH)
- Ca2Al2V (SiO4)3 (OH)
- Zn4 Si2O7(OH)2 H2O = Hemimorphite (O)
- Ca10 (Mg,Fe)2 Al4Si9O34 (OH) = Vesuvianite/Idiocrase (M)
- Ca2Al2V (SiO4)3 (OH) = Mukhinite (M)
Epidote
- Ca2(Al,Fe)3 Si3O12 (OH)
- Ca2Al3 Si3O12 (OH)
- Ca2Al3 Si3O12 (OH)
- CaAl2 Si2O7 (OH)2 H2O
- Ca2(Al,Fe)3 Si3O12 (OH) = Epidote (M)
- Ca2Al3 Si3O12 (OH) = Zoisite (O)
- Ca2Al3 Si3O12 (OH) = Clinozoisite (M)
- CaAl2 Si2O7 (OH)2 H2O =Lawsonite (O)
Wohlerite
- CaAl2 Si2O7 (OH)2 H2O
- Ca2(Mn,Fe)Al2 (SiO4)(Si2O7)O (OH)
- Ca,(REE)Al2Fe ( Si2O7)(SiO4)O (OH)
- Na2Ca4ZrNb (Si2O7)2 O3F
- CaAl2 Si2O7 (OH)2 H2O = Lawsonite O
- Ca2(Mn,Fe)Al2 (SiO4)(Si2O7)O (OH) = Piemontite M
- Ca,(REE)Al2Fe ( Si2O7)(SiO4)O (OH) = Allanite M
- Na2Ca4ZrNb (Si2O7)2 O3F = Wohlerite M
Pb Epidote
- Thulite
- Hancokcite
- Tanzanite
- Thulite = Mn Zoisite
- Hancokcite = Pb Epidote
- Tanzanite = V Zoisite
Monoclinic Amphibole Series
C - A - H - Na
Cummingtonite
Actinolite
Hornblende
Na Amphiboles
“Orthorhombic Amphibole Series
A - G
Anthophyllite
Gerdrite
Grunerite (Cummingtonite Series)
- Fe7 Si8O22 (OH)2
- (Mg,Fe)7 Si8O22 (OH)2
- Ca2Mg5 Si8O22 (OH)2
- Ca2(Mg,Fe)5 Si8O22 (OH)2
- (Mg,Fe)7 Si8O22 (OH)2 = Cummingtonite
- Fe7 Si8O22 (OH)2 = Grunerite
- Ca2Mg5 Si8O22 (OH)2 = Tremolite (actinolite Series)
- Ca2(Mg,Fe)5 Si8O22 (OH)2 = Actinolite