Citation: Marschall, H. R.; Ertl, A.; Hughes, J. M.; McCammon, C. A. (2004). Metamorphic Na- and OH-rich disordered dravite with tetrahedral boron, associated with omphacite, from Syros, Greece: chemistry and structure Sample: SY309B. European Journal of Mineralogy, 16, pp. 817-823.