Name HEULANDITE
Variety HEULANDITE
Origin Maharashtra (Mumbai) India
Hardness 3-4
Composition (Ca,Na)2-3Al3(Al,Si)2Si13O36.12H2O
Crystaline sys. MONOCLINIC
Size   8x6x3,5 cm
Weight 87 gr




Description:
Until 1997 it was considered to be a mineral species, but since then it is considered as a series of minerals part of the zeolite group due to its variable chemical composition. It was discovered in 1818. It usually is colourless, but one can also find specimens in green, yellow and others.


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