HEULANDITE - (Ca,Na2)Al2Si7O18.6H2O A hydrous calcium-sodium aluminum silicate. A very fine and unique specimen of Heulandite very well crystallized that is a 5.5cm (2-1/4") crystal with minor stilbite, on stalactites Drusy green quartz. From Jalgoan, Maharashtra State, India. Overall dimension is 6.3cm (2-1/2") by 6.3cm (2-1/2") Weight 0.19 lbs.
