Search results for " cannonite"

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The Bi sulfates from the Alfenza Mine, Crodo, Italy: An automatic electron diffraction tomography (ADT) study

2014

We report about three bismuth sulfates from mineralized quartz dikes from Alfenza (Crodo, Italy), two new phases and a rare mineral, cannonite, all growing on bismuthinite. The first new phase occurs as white, "hortensia-like" aggregates of pseudo-hexagonal platelets, with perfect basal cleavage, similar to 20 mu m wide and few micrometers thick. The approximate composition is Bi2O2(SO4), and cell parameters and symmetry, as determined by automatic diffraction tomography, are a = 22.0(4), b = 16.7(3), c = 15.9(3) angstrom, beta = 102.9(5)degrees, space group Pc or P2/c. A major stacking disorder is detected by HR-SEM images and electron diffraction data.The second new phase was detected onl…

AcicularMaterials scienceElectron crystallography automatic diffraction tomography bismuth sulfate cannonite porous phaseElectron crystallographyElectron crystallography; automatic diffraction tomography; bismuth sulfate; cannonite; porous phaseElectron crystallographychemistry.chemical_elementautomatic diffraction tomographyengineering.materialGEO/06 - MINERALOGIABismuthbismuth sulfateBismuthiniteDiffraction tomographyCrystallographyGeophysicschemistryElectron diffractionGeochemistry and PetrologyPhase (matter)engineeringcannoniteQuartzElectron crystallography; bismuth sulfate; cannonite; automatic diffraction tomographyporous phase
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