Minerals are classified based on their anion group. For each of the mineral clas

ID: 893496 • Letter: M

Question

Minerals are classified based on their anion group. For each of the mineral classes below, list the anion group -- with correct stoichiometry and charge -- that gives the group its name. Then list three common minerals in that class by name and chemical formula.

Thank you.

4. Common mineral classes. (Eby, Chapter 7, pg. 207-212) Minerals are classified based on their anion group. For each of the mineral classes below, list the anion group with correct stoichiometry and charge - that gives the group its name. Then list three common minerals in that class by name and chemical formula. Mineral class Silicates Carbonates Oxides Hydroxides Sulfates Sulfides Anion group Three common minerals and their chemical formula

Explanation / Answer

Mineral class

Anion group

Three common minerals and their chemical formula

Silicates

(SiO4)4- orthosilicate

Sorosilicates (Si2O7)6-

chain silicate (SiO3)2-

Sheet silicate(Si4O10)4-

Framework silicate SiO2

Aluminosilicate(Al2SiO5)

Zeolite (Na2Al2Si3O10.2H2O called natrolite)

Talc(Mg3Si4O10(OH)2

Carbonates

CO32-

Calcite= (CaCO3)

Siderite (FeCO3)

Dolomite(CaMg(CO3)2

Oxides

(O2-)

Cuprite(Cu2O),

Haematite(Fe2O3)

Zincite (ZnO)

Hydroxides

OH-

Brucite - (Mg(OH)2)

Gibbsite -Al(OH)3)

Goethite FeO(OH)

Sulfates

SO42-

Barite (BaSO4)

Gypsum CaSO4.2H2O

Apatite Ca5(PO4)3OH

Sulfides

S2-

Galena(PbS)-Lead sulphide

Chalcopyrite(CuFeS2)

Chalcocite(Cu2S)