| (a) Elements— | ||
| Diamond | C |
|
| (b) Oxides— | ||
| Corundum | Al2O3 |
|
| Quartz | SiO2 |
|
| Chalcedony | SiO2 |
|
| Opal | SiO2.nH2O |
|
| (c) Aluminates— | ||
| Spinel | MgAl2O4 |
|
| Chrysoberyl | BeAl2O4 |
|
| (d) Silicates— | ||
| Phenakite | Be2SiO4 |
|
| Dioptase | H2CuSiO4 |
|
| Peridot | Mg2SiO4 |
|
| Zircon | ZrSiO4 |
|
| Enstatite | MgSiO3 |
|
| Diopside | CaMg(SiO3)2 |
|
| Nephrite | CaMg3(SiO3)4 |
|
| Sphene | CaTiSiO5 |
|
| Benitoite | BaTiSi3O9 |
|
| Andalusite | Al(AlO)SiO4 |
|
| Kyanite | (AlO)2SiO3 |
|
| Topaz | [Al(F,OH)]2SiO4 |
|
| Epidote | Ca2(Al,Fe)2(AlOH)(SiO4)3 |
|
| Euclase | Be(AlOH)SiO4 |
|
| Prehnite | H2Ca2Al2(SiO4)3 |
|
| Iolite | H2(Mg,Fe)4Al8Si10O37 |
|
Garnet { |
Hessonite | Ca3Al2(SiO4)3 |
| Pyrope | Mg3Al2(SiO4)3 |
|
| Almandine | Fe3Al2(SiO4)3 |
|
| Andradite | Ca3Fe2(SiO4)3 |
|
| Beryl | Be3Al2(SiO3)6 |
|
| Spodumene | LiAl(SiO3)2 |
|
| Jadeite | NaAl(SiO3)2 |
|
| Moonstone | KAlSi3O8 |
|
| Tourmaline | 12SiO2.3B2O3.(9-x)[(Al,Fe)2O3].3x[(Fe, Mn,Ca,Mg,K2,Na2,Li2,H2)O].3H2O |
|
| Axinite | HCa3Al2B(SiO4)4 |
|
| Idocrase | (Ca,Mn,Mg,Fe)2(Al,Fe)(OH,F)]Si2O7 |
|
| (e) Phosphates— | ||
| Beryllonite | NaBePO4 |
|
| Apatite | Ca5(F,Cl)(PO4)3 |
|
| Turquoise | CuOH.6[Al(OH)2].H5.(PO4)4 |
|