Stellerite from Villanova Monteleone,Sardinia |
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| Authors: | E Galli E Passaglia |
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| Institution: | Istituto di Mineralogia e Petrologia, Universita?di Moden, Via S. Eufemia 19, 41100 Modena, Italy |
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| Abstract: | Stellerite (a zeolite) occurs as polycrystal aggregates filling cavities and fractures in the andesite near Villanova Monteleone (Sassari). Principal forms are (100), (010), (001) and (111). The indexed X-ray diffraction powder pattern is reported. The mineral is orthorhombic, with space group Fmmm (or F222 or Fmm2). The unit cell dimensions, chemical formula, density and optical properties are given. |
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