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Chayesite: K(Mg,Fe++)4Fe+++(Si12O30) Merrihueite: (K,Na)2(Fe++,Mg)5Si12O30
Comments: A sharp, chemically zoned crystal of copper-brown merrihueite(?) (see Lapis-Magazine 4/2002 Page 38/39) overgrown on bluish chayesite. Location: Basalt quarry, Pauliberg Mt., Kobersdorf, Oberpullendorf, Burgenland, Austria. Scale: Crystal Size 0.15 cm. © Jeff Weissman / Photographic Guide to Mineral Species
Chayesite: K(Mg,Fe++)4Fe+++(Si12O30)
Comments: Crystalline aggregate of rusty red, thin tabular hexagonal plates of chayesite stacked along the c-axis on matrix. Location: Pauliberg Mt., Kobersdorf, Oberpullendorf, Burgenland, Austria. Scale: Crystal size 0.5 mm. © Tom Loomis / Dakota Matrix