Mineral classification Ch 4 and Ch 11

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Author:
kevindevriendt
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176767
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Mineral classification Ch 4 and Ch 11
Updated:
2012-10-10 11:29:13
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Mineral classification 11
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Mineral classification Ch 4 and Ch 11
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  1. What is the basic building block of all silicate minerals?
    Silicon tetrahedron
  2. Silicon is a relatively _____which conviniently fits in _______coordination with ___. 
    Small cation

    tetrahedral coordination

    O2-
  3. What is a mineral
    Naturally occuring, homogeneous solid with a definite but not necessarily fixed chemical composition that has an arranged atomic arrangement
  4. What do silicate subclasses refer to?
    They refer to the degree of polymerization of silicon tetrahedra i.e. HOW MANY O2- ARE SHARED
  5. Nesosilicates
    Isolated tetrahedra
  6. sorosilicates
    Paired tetrahedral
  7. inosilicates
    single and double chains
  8. cyclisilicates
    rings
  9. phyllosilicates
    sheets
  10. tectosilicates
    frameworks
  11. Wahat are classes based upon
    Based mostly on their anions or anioinic complexes, because both have similar physical properties.
  12. Anion

    Anionic complex
    single atom who has aquired electrons to have a net negative charge (S4+)

    Anion that is bound to one more more polar molecules or ions. (SO4-)
  13. Silicates
    (SiOn)4-2n
  14. Define classes
    At the highest level, mineral pecies can be classified primarily on main main anion, anionic complex or element to form classes - silicates
  15. Define SUBCLASSES
    applied to silicates where the configuration and bonding of tetrafedra are used to group structurally similar minerals (tectosilicate subclass)
  16. Define group
    consits of two or more minerals with the similar structure and composed of chemically similar elements (feldspars in tectosilicate subclass)
  17. Define Subgroup or series
    Consists of two or more minerals related by different cations (solid solution)

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