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 exhibitsvltavín, deset kusů g4881vltavín, dvacet devět kusů g4882 vltavín, šest kusů g4883 vltavín, deset kusů g4884 azbest v pikritu, tři kusy g4906 azbest, jeden kus g5127 natrolit, jeden kus /6x5cm/ g5056 turmalin v živci /z pegmatitu/, jeden kus g5060 vltavín, dva kusy g5096 živec, jeden kus g5102 biotit, jeden kus g5109 oligoklas, jeden kus g5110 azbest, jeden kus g5114 azbest, jeden kus g5121 azbest v serpentinitu, jeden kus g5123 živec, jeden kus g5126 mastek, dva kusy g5154 azbest, jeden kus g5155 živec písmenkový z pegmatit.ž., jeden kus g5166 natrolit, jeden kus (průměr 5cm) g5167 |