This mineral has
pleochroic attributes, which is an optical phenomenon that makes the mineral seem to be a different color depending on the axis it is inspected on. On the x axis, the mineral seems to be almost colorless, on the y it is pale yellow, and on the z it can be seen as a yellow mineral. Yingjiangite grows in acicular crystals up to a millimeter. It forms aggregates, made of clusters or several individual crystals. It has a fine-grained coating and yellow crusts. A common finding place for the mineral is in uranium deposits, especially in oxidized zones, as it is a uranium and oxygen-based mineral. It is a secondary product in these mines, which in most of the cases contain
uraninite and
uranothorite. Yingjiangite mostly consists of uranium (63.90%) and oxygen (25.77%), but otherwise includes phosphorus (4.75%), potassium (4.50%), hydrogen (0.70%) and calcium (0.38%). Due to the high uranium concentration of the mineral, it has a very strong, 4,679,034.10
radioactivity measured in
Gamma Ray American Petroleum Institute Units. The concentration per GRapi unit of the mineral is 213.72. ==References==