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

turmalín /skoryl/, jeden kus /17x13cm/ g9134

pyknit /topaz/, jeden kus /15x8cm/ g9135

klinozoisit, jeden kus g9165
topaz, jeden kus g9171
topaz, jeden kus g9172
epidot, jeden kus /14x10cm/ g9040
turmalín, jeden kus /11x9cm/ g9041
granát, jeden kus /14x11cm/ g9042
apofylit, jeden kus /11x10cm/ g9043

natrolit, jeden kus /13x10cm/ g9045
berthierit, jeden kus /10x8cm/ g9047
natrolit, jeden kus g9053
apofylit, jeden kus /16x13cm/ g9098
natrolit, jeden kus /18x13cm/ g9103

turmalín, jeden kus /12x11cm/ g9104
cinvaldit, kasiterit, křemen, jeden kus /16x11cm/ g9105

natrolit, jeden kus /29x19cm/ g9109

granát, jeden kus /16x12cm/ g9110
živec draselný - žilka s hematitem a kassiteritem, jeden kus /vrtné jádro/ g9236

feldspatit Na-K, jeden kus g9245

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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]