The discovery of Carnotite in Dachang, which occurred at the beginning of 2025, constitutes an unexpected mineralogical event in a district traditionally known for its stibnite mineralizations, as well as an absolute novelty, since until now there had been no record of its presence. Its appearance therefore represents a relevant advance in the knowledge of this rare species.
In this specimen, Carnotite completely coats unidentified crystals, showing a uniform yellow colour that is very characteristic of uranium minerals. It is accompanied by small and delicate crystals of Creedite, very bright and translucent, located in the upper part of the specimen.
It has been published at the magazine ‘Paragénesis’ number 02/2025, page 133.
Geologically, the area consists of thick Paleozoic limestone and dolomite sequences affected by strong faulting and fracturing, which provided pathways for hydrothermal fluids rich in sulfides, antimony, and volatile elements. These processes produced mineralized pockets and fissures where Carlhintzeite developed together with other little-common species such as Fluellite, Gearksutite or this Carnotite, for example.
Dachang mining area, Qinglong, Qianxi'nan Autonomous Prefecture, Guizhou Province China (03/2025)
Specimen size: 3.2 × 2.5 × 2.4 cm = 1.26” × 0.98” × 0.94”
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