 | Grew, E. S., Graetsch, H. A., Poter, B., Yates, M. G., Buick, I., Bernhardt, H.-J., Schreyer, W., Werding, G., Carson, C. J., Clarke, G. L. (2008) Boralsilite, Al16B6Si2O37, and "boron-mullite:" Compositional variations and associated phases in experiment and nature. American Mineralogist, 93 (2) 283-299 doi:10.2138/am.2008.2571 | Journal (article/letter/editorial) | | three specimens are dominated by cordierite, hercynite, and K-feldspar (Buick et al. 2006 and in preparation)...in contact with cordierite, and locally with hercynite, biotite, and K-feldspar (as an inclusion). The...K-feldspar + biotite + cordierite + sillimanite + hercynite (e.g., Greenfield et al. 1998; White et al. 2003)...werdingite in a cordierite matrix. Light grains are hercynite (subequant) and ilmenite (tabular). Sample 95-175D...andalusite, BM = “boron-mullite”, C = cordierite, H = hercynite, S = sillimanite-like, W = werdingite. Natural |  | Buick, Ian S., Grew, Edward S., Armbruster, Thomas, Medenbach, Olaf, Yates, Martin G., Bebout, Gray E., Clarke, Geoffrey L. (2008) Boromullite, Al9BSi2O19, a new mineral from granulite-facies metapelites, Mount Stafford, central Australia: a natural analogue of a synthetic "boron-mullite". European Journal of Mineralogy, 20 (5) 935-950 doi:10.1127/0935-1221/2008/0020-1809 | Journal (article/letter/editorial) | | biotite, werdingite and its Fe-dominant analogue, hercynite, and ilmenite are other commonly associated minerals...Abbreviations: Bmu – boromullite, Crd – cordierite, Hc – hercynite, Kfs – K-feldspar, Sil – sillimanite. is 3.081...Abbreviations: Bmu – boromullite, Crd – cordierite, Hc – hercynite, Ilm – ilmenite, Mnz – monazite, Sil – sillimanite...two blocky sillimanite aggregates with abundant hercynite; one has partial overgrowth of boromullite. Thin...Abbreviations: Bmu – boromullite, Crd – cordierite, Hc – hercynite, Sil – sillimanite. Tourmaline is found in zones |  | | Report (issue) | | The Natural History Museum of Milan and its Madagascar Collection The Museo Civico di Storia Naturale... the museum began paleontologic fieldwork in Madagascar (upper Permian fauna and Jurassic and Cretaceous...fieldwork in Madagascar in 1996 in collaboration with other institu tions in Madagascar, Italy, and the...Pezzotta has spent a total of twenty nine months in Madagascar making geological-mineralogical surveys. In collaboration...both classic and new minerals and gemstones from Madagascar opened at the Natural History Museum in Milan |
|
