Globular growth, practically spherical, a floater, of platy crystals. The development of the crystals and their luster are excellent for this rare calcium and tin silicate.
Formula :
Ca2Sn2[Si6O18] * 4 H2O
System: orthorhombic Hardness:6 Rarity:very rare
Strunz id:VIII/F.29-30 -
SILICATES
Name origin: Named after Sir George Gabriel Stokes (1819-1903), mathematician and physicist, University of Cambridge (England), after whom is named Stokes law, describing the force acting on a particle moving in a fluid medium.
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 Specimen weight:10 gr.
 Crystal size:Up to 4 mm
 Overall size: 18mm x 16 mm x 10 mm
 Owner : Minservice (Sondrio - Italy) Minservice Galleries Main 
 This specimen will be shipped by: Minservice
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