十二面体

The ore-hunting indicator is of calcite-potassium feldspar veins containing pyritohedron pyrite.

直接找矿标志为含五角十二面黄铁矿铁方解石钾长石。

Crystal Habits include the cube, octahedron and pyritohedron (a dodecahedron with pentagonal faces) and crystals with combinations of these forms.

形态常呈立方、五角十二面，较少呈八面，或集合簇。