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Winchite: [ ](CaNa)Mg4(Al,Fe3+)Si8O22(OH)2
Comments: Magenta crystalline winchite in manganese ore.
Location: Tirodi Mines, Madhya Pradesh, India.
Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species
Winchite: [ ](CaNa)Mg4(Al,Fe3+)Si8O22(OH)2 Sodalite: Na8Al6Si6O24Cl2
Comments: Purple sodalite with some crystal faces, supporting a very sharp, transparent winchite crystal, terminated on one end.
Location: Sar-e-Sang, Kokcha Valley, Badakshan Province, Afghanistan.
Scale: 11x10x8 mm.
© Richard Dale / Dale Minerals