Chabazite

Chabazite is the collective name for a group of chemically similar, but not closer to certain minerals from the mineral class of " silicates and Germanates ". It is by the International Mineralogical Association (IMA ) recognized end members of a solid solution series with the following chemical composition:

  • Chabazite -Ca - Ca 2 [ Al4Si8O24 ] · 13H2O
  • Chabazite -K - ( K2NaCa0.5 ) [ Al4Si8O24 ] · 11H2O
  • Chabazite -Mg - ( Mg0.7K0.5Ca0.5Na0.1 ) [ Al3Si9O24 ] · 10H2O
  • Chabazite -Na - ( Na3K ) [ Al4Si8O24 ] · 11H2O
  • Chabazite -Sr - (Sr, Ca ) 2 [ Al4Si8O24 ] · 11H2O

Chabazites are thus water-containing silicates having a varying content of calcium, potassium, magnesium, sodium and strontium, which are structurally the tectosilicates ( tectosilicates ), where part of the family of zeolites.

All chabazites crystallize in the trigonal crystal system and develop usually cube -like rhombohedron, but also massive aggregates, which are usually colorless or white. In rare cases, there also yellow, green, or red-colored crystals on. Very often, even crossing twins to find.

Education and Locations

Chabazites formed hydrothermally in igneous rocks such as pegmatites, but also in thermal springs. Accompanying minerals are various other zeolites such as stilbite, Harmotome and other minerals such as calcite and aragonite.

Locations include the Panvil in India, Faroe Islands, Berufjord in Iceland, Maglovec in Slovenia, as well as Řepčice in the Czech Republic.

Chemical formula Streak (mineralogy) Cleavage (crystal) Crystal habit Crystal twinning List of minerals
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