First occurrence of close-to-ideal Kirkiite at Vulcano (Aeolian Islands, Italy): Chemical data and single- crystal X-ray study
Research output: Contribution to journal › Journal article › Research › peer-review
The comparison reveals a variation in As-Bi substitution, with samples from Vulcano probably being close to the maximum possible Bi and the minimum As content for this structure type. This is reflected in more regular and symmetric coordination polyhedra than in the holotype, as well as in the overall regularity of the structure. The increased Bi:As ratio produces an elongation of the a and b lattice periods, and a shortening of the c period, and increases the frequency of twinning in kirkiite.
|Journal||European Journal of Mineralogy|
|Publication status||Published - 2006|
- The Faculty of Science - kirkiite, Vulcano fumaroles, twinning, crystal structure, sulfosalts