Yanomamite.
Micromount of a few 0.15mm balls of bluish white Yanomamite associated with Topaz and Cassiterite from the Periquito Mine, Goias, Brazil. Source:eBay seller merlyn8804 Contributor:Theodore Gray Acquired:24 March, 2009 Text Updated:25 March, 2009 Price: $60 Size: 0.2" Composition:InAsO4.2H2O