Autunite
Autunite is a phosphate mineral recognized among collectors for its crystal form and distribution, with known Chinese sources.
About Autunite
Autunite belongs to the phosphate class in the autunite group and has the chemical formula Ca(UO2)2(PO4)2·10-12H2O. It crystallizes in the tetragonal system and is relatively soft, requiring careful handling.
Identification & care
Crystals commonly develop as tabular, scaly-micaceous, square or rectangular; fan-like aggregates. Its color is typically bright lemon yellow, yellow-green and greenish yellow. The luster is vitreous to pearly, the streak is yellow, and specimens range from transparent to translucent. The cleavage is perfect {001} — micaceous basal parting. The fracture is uneven, which aids identification.
Collector context
Collector notes
For collectors, Autunite is a benchmark crystalline species. Autunite is widely represented across Chinese provinces, including Fujian, Gansu, Anhui, Guangdong.