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Ellestadite-(OH): Ca5(SiO4,SO4)3(OH,Cl,F) Yeelimite: Ca4Al6O12(SO4)
Comments: Ye'elimite and hydroxylellestadite intimately intergrown as a brownish aggregate in massive anhydrite.
Location: Ronneburg U deposit, Gera district, Thuringia, Germany.
Scale: Picture size 6 mm.
© Thomas Witzke / Abraxas-Verlag
Comments: Pale violet crystalline massive hydroxylellestadite.
Location: Crestmore Quarry, Riverside County, California, USA.
Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species