'Al 5 si' diaporamas de présentation

Feldspar Group

Feldspar Group. Most abundant mineral in the crust ? 6 of 7 most common elements Defined through 3 end-members ? Albite (Na), Anorthite (Ca), Orthoclase (K) Comprised of 2 series: Albite-anorthite (Na-Ca) Albite-orthoclase (Na-K). Tectosilicates.

626 views • 60 slides

Feldspar Group

Feldspar Group. Most abundant mineral in the crust ? 6 of 7 most common elements Defined through 3 end-members ? Albite (Na), Anorthite (Ca), Orthoclase (K) Comprised of 2 series: Albite-anorthite (Na-Ca) Albite-orthoclase (Na-K). Tectosilicates.

555 views • 55 slides

Minerals

Minerals. Chapter 5. What is a mineral?. Minerals are the building blocks of rocks.. All of them are solid. They occur naturally and have a definite chemical composition The atoms are arranged in an orderly fashion (crystal) Inorganic (never alive). How many minerals are there?.

443 views • 44 slides

Back to silicate structures:

Back to silicate structures:. nesosilicates. phyllosilicates. sorosilicates. inosilicates. cyclosilictaes. tectosilicates. b. c. Nesosilicates: independent SiO 4 tetrahedra. projection. Olivine (100) view blue = M1 yellow = M2. (+). T M1 T

525 views • 34 slides

Mineral Structures

Mineral Structures. the [SiO 4 ] 4- tetrahedron. Silicates are classified on the basis of Si-O polymerism. Mineral Structures. [SiO 4 ] 4- Independent tetrahedra Nesosilicates Examples: olivine garnet [Si 2 O 7 ] 6- Double tetrahedra Sorosilicates

510 views • 31 slides

Inosilicates: single chains- pyroxenes

b. Diopside: CaMg [Si 2 O 6 ]. Where are the Si-O-Si-O chains??. Inosilicates: single chains- pyroxenes. Diopside (001) view blue = Si purple = M1 (Mg) yellow = M2 (Ca). b. Inosilicates: single chains- pyroxenes. Diopside (001) view blue = Si purple = M1 (Mg) yellow = M2 (Ca).

530 views • 30 slides

How many molecules?

215 views • 21 slides