Questions and Answers
True or false: The double-chain amphibole structure can be extended to form a sheet silicate with the formula (Si Oio).
True
True or false: The structural variations in different micas arise from the isomorphous substitution of Al'+ for Si*+ in the silica sheet.
True
True or false: Muscovite and biotite are common micas that have Al'+ occupying one of the tetrahedral sites, generating a negative structural charge.
True
Which type of structure is formed when the double-chain amphibole structure is extended in two dimensions by bonding all three basal O.- atoms of each tetrahedron with Sit atoms of other tetrahedra?
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What is the formula for the polymer that is the basis of the mica structure?
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What is the role of Al'+ in muscovite and biotite micas?
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