Silicate minerals#Sorosilicates

As a group of silicates ( Sorosilikate ) is called silicates, silicate anions which consist of groups of corner-sharing SiO4 tetrahedra. The groups are isolated, that is, they are not mutually linked by more Si -O bonds to form chains, layers or frameworks.

At the Department of silicates include petrological interesting groups of minerals such as melilite, lawsonite, epidote and vesuvianite - group and zoisite.

The symmetry group of the silicates is usually low, predominantly monoclinic or triclinic, orthorhombic or tetragonal rare. Cubic group silicates are not known. The counted among the group of silicates mineral Karnasurtit - (Ce) is X-ray amorphous.

Lawsonite

Vesuvian

Epidote

Zoisite

Classification

Silicate classification according to Liebau

The structural classification of silicate Liebau divides the group silicates, based on the structure of silicate groups of the following criteria:

Multiplicity: It indicates how many silicate tetrahedra consist groups. Date refers to the SiO2 tetrahedra, which form a linear chain fragment. More branching tetrahedra are not counted. The multiplicity of natural silicates group is from 2 to 5

3 Easy silicate group of Rosenhahnit

4- Easy - silicate group of Akatoreite

Highlighted single Arsenatotrisilikatgruppe of Tiragalloit, AsO4 tetrahedra yellow

Easy - Vanadatopentasilikatgruppe of Medait, VO4 tetrahedra highlighted in orange

Multiplicity: Similar to the ring and linear silicates silicate groups of multiple groups may be joined together. The Miltiplizität indicates how many groups are linked together to form a multicast group. So far only one group of silicate with the multiplicity 2 known ( Fencooperit ).

Branching: It indicates whether branching from the silicate ring more SiO4 tetrahedra. A distinction is made between open and cyclic branched branched silicates silicates, in which the branching of the chain SiO4 tetrahedra form closed rings.

Mixed silicate anions: Numerous group silicates in addition to a silicate group further isolated island or Gruppensilikatanionen. Epidote, for example, contains a Si2O7 - group nor SiO4 island silicate group.

Strunz

The 9th edition of Strunz 's Mineralogical tables divided the department of the group silicates ( 09 B ) primarily according to the multiplicity of the silicate groups, then after the occurrence of another isolated anion complexes and after the structural environment of cations.

9.BB Si2O7 groups without non- tetrahedral anions; Cations in tetrahedraler and greater coordination

  • 9.BB.10 melilite group
  • 9.BB.15 Barylith Group
  • 9.BB.20 Andrémeyerit Group

9.BC Si2O7 groups without non- tetrahedral anions; Oktahedraler cations and / or other coordination

  • 9.BC.05 thortveitite Group
  • 9.BC.10 Keldyshit Group
  • 9.BC.15 Rank init group
  • 9.BC.20 Barysilith Group
  • 9.BC.25 Edgarbaileyit Group
  • 9.BC.30 Kristiansenit Group
  • 9.BC.35

9.BD Si2O7 groups with additional anions; Tetrahedraler cations and / or other coordination

  • 9.BD.05 Bertrandit Group
  • 9.BD.10 Hemimorphite Group
  • 9.BD.15 Junitoit Group
  • 9.BD.20 Axinit Group
  • 9.BD.25 Vistepit Group
  • 9.BD.30 Boralsilit Group
  • 9.BD.35 Werdingit Group

9.BE Si2O7 groups with additional anions; Cations in oktahedraler and greater coordination

  • 9.BE.02 wadsleyite
  • 9.BE.05 lawsonite group
  • 9.BE.07
  • 9.BE.10 Suolunit Group
  • 9.BE.12 Jaffeit Group
  • 9.BE.15 Fresnoit Group
  • 9.BE.17 cuspidine Group
  • 9.BE.20 mosandrite Group
  • 9.BE.22 rosenbuschite Group
  • 9.BE.25 Seidozerit Group
  • 9.BE.27 Murmanit Group
  • 9.BE.30 Epistolit Group
  • 9.BE.32 Lomonosovit Group
  • 9.BE.35 Vuonnemit Group
  • 9.BE.37 Sobolevit Group
  • 9.BE.40 Innelit Group
  • 9.BE.42 Yoshimurait Group
  • 9.BE.45 Quadruphit Group
  • 9.BE.47 Polyphit Group
  • 9.BE.50 Bornemanit Group
  • 9.BE.55 Bafertisit Group
  • 9.BE.60 Delindeit Group
  • 9.BE.65 Bussenit Group
  • 9.BE.67 Perraultit Group
  • 9.BE.70
  • 9.BE.72 Fersmanit Group
  • 9.BE.75 Belkovit Group
  • 9.BE.77 Nasonit Group
  • 9.BE.80 Kentrolith Group
  • 9.BE.82 Tilleyit Group
  • 9.BE.85 Killalait Group
  • 9.BE.87
  • 9.BE.90
  • 9.BE.95

9.BF groups ( Soro ) - silicates with mixed SiO4 and Si2O7 groups; Cations in tetrahedraler and greater coordination

  • 9.BF.05 Harstigit Group
  • 9.BF.10 Samfowlerit Group
  • 9.BF.20 Queitit Group

9.BG groups ( Soro ) - silicates with mixed SiO4 and Si2O7 groups; Cations in oktahedraler and greater coordination

  • 9.BG.05 epidote - group
  • 9.BG.10 zoisite group
  • 9.BG.15 Sursassit Group
  • 9.BG.20
  • 9.BG.25 Ganomalith Group
  • 9.BG.30 Rustumit Group
  • 9.BG.35 Vesuvian group
  • 9.BG.40
  • 9.BG.45 Dellait Group
  • 9.BG.50

9.BH groups ( Soro ) - silicates with Si3O10 or larger anions; Cations in tetrahedraler and greater coordination

  • 9.BH.05 Aminoffit Group
  • 9.BH.10 Kinoite Group
  • 9.BH.15 Akatoreit Group
  • 9.BH.20 Fencooperit Group

9.BJ groups ( Soro ) - silicates with Si3O10, Si4O11, etc. anions; Cations in oktahedraler and / or greater coordination

  • 9.BJ.05 Orientit Group
  • 9.BJ.10 Rosenhahnit Group
  • 9.BJ.15 Trabzonit Group
  • 9.BJ.20
  • 9.BJ.25 Tiragalloit Group
  • 9.BJ.30 Medait Group
  • 9.BJ.35 Ruizit Group
  • 9.BJ.40 Ardennite Group
  • 9.BJ.44 Kilchoanit Group
  • 9.BJ.50 Kornerupine Group
  • 9.BJ.55 Zunyit Group
  • 9.BJ.60 Hubeit Group
  • 9.BJ.65 Cassagnait
Zunyite Axinite List of minerals
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