Help on Dana Classification : Dana Classif. : Dana Code:2.11.1.1
Dana Class:2 - Sulfide Minerals
Dana Type:2.11 - Sulfides - Including Selenides and Tellurides where Am Bn Xp, with (m+n):p=2:3
Dana Group:2.11.1 - 
 
CodeMineralFormulaH-M SymbolSpace Group
2.11.1.1OrpimentAs2S32/mP21/n
2.11.1.2GetchelliteAsSbS32/mP21/a
 
Help on Strunz Class: Strunz Classif. : Strunz Code:II/F.02-70
Strunz Class:II - Sulfides and sulphosalts
Strunz Type:II/F - Sulfides with nonmetallic properties, Arsenic-Sulfides
Strunz Group:II/F.02 - Duranusite - Jeromite series
 
CodeMineralFormulaH-M SymbolSpace Group
II/F.02-10DuranusiteAs4SUnk
II/F.02-20DimorphiteAs4S32/m 2/m 2/mPnma
II/F.02-30RealgarAsS2/mP21/n
II/F.02-40PararealgarAsS2/mP21/c
II/F.02-50AlacraniteAs4S42/mC2/c
II/F.02-60UzoniteAs4S52/mP21/m
II/F.02-70OrpimentAs2S32/mP21/n
II/F.02-80LaphamiteAs2(Se,S)32/mP21/n
II/F.02-90JeromiteAs(S,Se)2