Comparative Study on Gemmological Characteristics of Apophyllites from Huangshi of Hubei Province and Punna of India

A kind of apophyllite crystal with the important research value is found recently in Huangshi district of Hubei Province in China, and its crystal habit is different from that of apophyllite from other areas.The apophyllite crystals from Huangshi of Hubei Province and Punna of India are studied by means of conventional gemmological methods, EMPA and LRM, including the crystal characteristics, chemical compositions and inclusions.The results show that the crystal form of the apophyllite sample from Huangshi of Hubei Province is mainly in tabular, and that of the sample from Punna of India is in columnar.The main elements of the both samples are Si, Ca and K, but Al and Na could be found in the sample from Huangshi of Hubei Province.The gas-liquid inclusion is mainly in apophyllite sample from Huangshi of Hubei Province, and the quartz and zeolite inclusions are mainly in the sample from Punna of India.