THOMSONITE

NaCa2Al5Si5O20 - 6H2O
Hydrated sodium calcium aluminum silicate
(also known as Bagotite)

 Cleavage: perfect

 Colour: clear, white and yellow

 Fracture: uneven

 Hardness: 5 - 5.5

 Luster: vitreous

 Streak: white

 Possible Useage: mineral specimen, chemical filter

 More Info: Mineral Gallery, Mineralogy Database