Mineral: | Fergusonite-(Y)
| Chemical Formula: | YNbO4 ((Y.45REE.37U.05).87 (Nb.90Ta.08Ti.02)1.00O3.64(OH).36) | Size: | | Weight: | | Transparence: | | Quantity: | | Origin: | Sakangyi area, west of Mogok, Shan State, Burma (Myanmar) | This is a twinned fergusonite crystal with radial grown minerals in between the single twins. Most likely the mineral is xenotime (Y). The crystal shows intact prism faces and some termination as well. Interesting piece with another prismatic tetragonal crystal attached at the xenotime. A radioactive paragenesis with a gamma activity of 2,7 µSv/h and the total dosage of around 10 µSv/h. Although the gamma radiation is not that high the specimen should be handled with care!
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