Click on thumbnails for a larger image. Please be patient since some of these pages of thumbnail images take some time to load. These mineral photos are copyrighted by their owners and may not be used without permission.
Lourenswalsite: (K,Ba)2(Ti,Mg,Ca,Fe)4(Si,Al,Fe)6O14(OH)12 Aegirine: NaFe+++Si2O6
Comments: Light brownish rosettes of lourenswalsite with dark green crystals of aegirine and white feldspar. Location: Diamond Jo quarry, Magnet Cove, Hot Springs Co., Arkansas, USA. Scale: Picture size 3 mm. © Thomas Witzke / Abraxas-Verlag