• Home
• Taxonomy
• Map search
• Palaentology-search
• Stratigraphy
• Minerals
• • Minerals
  • • Elements
    • Sulfides
    • Halides
    • Oxides and Hydroxide
    • Nitrates, Carbonates
    • Borates
    • Sulfates
    • Phosphates
    • Silicates
    • Organolites
  • Rocks
• Links
• References
• Contacts
• Site map

      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.

prehnit, natrolit, kalcit, klinozoisit

No. of sample:	g9026
Mineral:	prehnit, HOR
Description:	jeden kus /17x8cm/
Localization:	Horky /Potěhy/, o. Kutná Hora
Origin:	coll.V.Šafránek
Author:	leg. P. Veselý
Comment:	ledvinité /prehnit/, jehličkovité /natrolit/ a stébelnaté agregáty /klinozoisit/, se shlukem krystalů kalcitu, nález 1958

Previous

Next