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 exhibitsgranát, dva kusy g7588lepidolit, čtyři kusy g7589 chalcedon, jeden kus 10x6cm g7643 kyz - polymetalycké zrudnění, jeden kus g7729 chrysotil /asbest/, jeden kus g7790 anthofylit, dva kusy g7802 živec, tři kusy g7804 živec, jeden kus g7805 živec, dva kusy g7806 fuchsit, jeden kus g7841 vltavín, 52 kusů - 239 g g7872 vltavín, 161ks - 510g g7873 živec - partie v pegmatitu, jeden kus g7877 serpentin - granátový, jeden kus g8281 vltavín, 127 kusů g8286 serpentin, jeden kus g7913 beryl, jeden kus g7932 wollastonit, jeden kus g7938 turmalin s kassiteritem, jeden kus g7944 vltavín, 270 ks, 499g g7899 |