Eight different type of heulandite crystals were collected from Marathwada region of India. These were characterized by x-ray diffraction (XRD), thermogravimeterc analysis (TG) and infrared spectroscopy (IR). The intensities of the peaks of XRD?s have been compared. The weigth loss due to desertion of water has been estimated by therogravimetric analysis. The framework structure of these heulandite crystals were studied by infrared spectroscopy.