|
Barrerite has been reported from only a few localities. The two well described localities are in altered volcanic rock, very near sea level. At the type locality from Capo Pula, Sardinia, Italy, the host rock is deeply weathered lava, either andesite or rhyolite that is exposed nearby in a less altered state (Passaglia and Pongiluppi 1974). The other occurrence is in the basalt tidal zone of Kuiu Island in southeastern Alaska (Di Renzo and Gabelica 1997). Experimental evidence suggests that barrerite cannot be derived from stilbite by Na-ion exchange, and must therefore, have crystallized from Na-rich fluids. Barrerite has been reported from others localities in Nagasaki Pref., Japan; Bay of Fundy, Nova Scotia, Canada; Cedar Mountain Stone Corp. quarry, Virginia, U.S.A.; but mineral data or analyses have not been reported. |
|
Alberti, A. and Vezzalini, G. 1978. Crystal structures of heat-collapsed phases of barrerite. In Natural Zeolites, Occurrence, Properties Use. Sand, L.B. and Mumpton, F.A. (eds) Pergamon Press, Oxford, 85-98.
Di Renzo, F. and Gabelica, Z. 1997. Barrerite and other zeolites from Kuiu and Kupreanof Islands, Alaska. Can. Mineral., 35, 691-698.
Galli, E. and Alberti, A. 1975. The crystal structure of barrerite. Bull. Soc. fr. Minéral. Cristallogr. 98, 331-340.
Passaglia, E. and Pongiluppi, D. 1974. Sodian stellerite from Capo Pula, Sardegna. Lithos, 7, 69-73.
Passaglia, E. and Pongiluppi, D. 1975. Barrerite, a new natural zeolite. Min. Mag. 40, 208.
Sacerdoti, M., Sani, A., and Vezzalini, G. 1999. Structural refinements of two barrerites from Alaska. Microporous Mesoporous Mater. 30, 103-109. |