Silicates

9th class - Silicates This group of minerals is extremely large. The fundamental building block of silicates is the SiO₄ tetrahedron, and silicate structures are classified according to the degree of polymerization by corner-sharing of the tetrahedra:
Nesosilicates - have insular SiO₄ tetrahedra.
Sorosilicates - have cluster structures with two, or rarely more, corner- sharing tetrahedra.
Cyclosilicates - have tetrahedra connected into rings.
Inosilicates - have tetrahedra in chains of infinite length.
Phyllosilicates - have rings of tetrahedra linked into continuous sheets.
Tektosilicates - have tetrahedra linked into a 3-dimensional framework.

List of exhibits

indigolit /turmalín/, jeden kus /8x7cm/ g8590
andalusit, jeden kus /10x6cm/ g8592
verdelit /turmalín/, jeden kus /9x5cm/ g8593
turmalín, jeden kus /8x7cm/ g8594
lepidolit, jeden kus /9x5cm/ g8596
andalusit, jeden kus /12x6cm/ g8597
cordierit, jeden kus /10x8cm/ g8599
skapolit, jeden kus 8x5cm g8600
andalusit, jeden kus /11x8cm/ g8601
cinvaldit, jeden kus /14x13cm/ g8497
pyknit /topaz/, jeden kus /13x9cm/ g8501
pyknit /topaz/, jeden kus /12x8cm/ g8503
turmalín, jeden kus /11x8cm/ g8568
indigolit /turmalín/, jeden kus /10x5cm/ g8567
cordierit, jeden kus /8x6cm/ g8622
muskovit, jeden kus /7x5cm/ g8624
gigantolit, jeden kus /11x10cm/ g8625
tridymit, jeden kus /8x7cm/ g8626
chalcedon, jeden kus /11x8cm/ g8627
cordierit, jeden kus /10x8cm/ g8628

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Virtual museum of the Czech Geological Survey, www.geology.cz, (C) Czech Geological Survey, 2011, v.0.99 [13.12.2011]