Analcime
Analcime is a silicate mineral prized by collectors for its exceptional color range, with notable Chinese occurrences.
About Analcime
Analcime is a silicate mineral in the analcime group and has the chemical formula Na[AlSi2O6]·H2O. It crystallizes in the isometric system and is one of the most visually varied minerals in the collector market.
Identification & care
Crystals commonly develop as trapezohedra (icositetrahedral — 24-faced 'ball' shape, highly characteristic); granular; massive. Its color range is broad, including colorless, white, pale gray, yellowish, pinkish, and greenish. The luster is vitreous, the streak is white, and specimens range from transparent to translucent. The cleavage is imperfect on {100}. The fracture is subconchoidal to uneven, which aids identification.
Collector context
Collector notes
For decorative mineral collectors, Analcime is appreciated for its visual character. Documented Chinese occurrences are recorded at Dexing Cu-Mo-Au ore field and Bayan Obo deposit, among others.