Stillwaterite [SEP] named after
Stillwaterite
The palladium arsenide mineral Stillwaterite has a general formula of PdAs. Stillwaterite was first discovered in the Banded and Upper zones of the Stillwater igneous complex in Montana, US, and has been reported in the Lac-des-Iles area of Ontario, Canada. Outside of North America, this rare mineral has been found in northern Finland. 
Symmetry.
Stillwaterite has hexagonal symmetry, meaning that it has four crystallographic axes: three are horizontal axes of equal length, and the fourth is a vertical axis of different
) 05.DA.50    (IUPAC: hexamagnesium dichromium carbonate hexadecahydroxy tetrahydrate)
47. Stilbite (zeolitic tectosilicate) 09.GE.10
1. Stilbite-Ca (stilbite: IMA1997 s.p., 1801) 09.GE.10   
2. Stilbite-Na (stilbite: IMA1997 s.p., 1997) 09.GE.10   [no]
48. Stilleite (sphalerite: 1956) 02.CB.05a    (IUPAC: zinc selenide)
49. Stillwaterite (stillwaterite: IMA1974-029) 02.AC.10a    (IUPAC: octapalladium triarsenide)
50. Stillwellite-(Ce) (IMA1987