The kyawthuite crystal was discovered in 2010 by sapphire ... Kyawthuite is a bismuth-antimony oxide, with the chemical formula Bi₃⁺Sb₅⁺O₄, with traces of tantalum.

This is bismuth — a natural chemical element that chemically resembles arsenic and antimony. But there’s a catch with this crystal. While bismuth occurs naturally in the Earth’s crust ...

The focus of the study was a bulk single crystal of a topological kagome metal ... interlaced triangles and hexagons—stacked on top of one another, with Cesium and Antimony spacer layers between the ...