Mineral Information and Data:

Cavansite
Ca(V4+O)Si4O10 • 4H2O [CNMNC approved formula]

Named after its composition of calcium, vanadium, and silicon.

IMA status : Approved Species 1973 ()
CLASSIFICATION 
Dana
(8th edition) :
74.03.07.01  
  (74) Phyllosilicate Modulated Layers
  (74.03) with joined strips
  (74.03.07) V phyllosilicates
  
Nickel-Strunz
(10th edition) :
09.EA.50
  (09) Silicates
  (09.E) Phyllosilicates
  (09.EA) Single nets of tetrahedra with 4-, 5-, (6-), and 8-membered rings
  
Crystal system: Orthorhombic System
Point group (H-M): mmm (or 2/m 2/m 2/m) — dipyramidal
  
  
  
Other Properties: Gemstone Extremely Rare.

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