Biotite is a common phyllosilicate mineral within the mica group. It is also sometimes called "black mica" as opposed to "white mica" (muscovite) -- both form in some rocks, in some instances side-by-side. Biotite was named by J.F.L. Hausmann in 1847 in honour of the French physicist Jean-Baptiste Biot, who, in 1816, discovered optical properties of micas. Biotite - search on eBay here. ... http://www.squidoo.com/BIOTITE Thu, 21 Aug 2008 03:05:32 -0600 FeedCreator 1.7.2 Mon, 08 Jan 2007 03:49:56 -0600 http://www.squidoo.com/BIOTITE Biotite is a common phyllosilicate mineral within the mica group. It is also sometimes called "black mica" as opposed to "white mica" (muscovite) -- both form in some rocks, in some instances side-by-side. Biotite was named by J.F.L. Hausmann in 1847 in honour of the French physicist Jean-Baptiste Biot, who, in 1816, discovered optical properties of micas. Biotite - search on eBay here. Misspelling or wrong spell - iotite, botite, bitite, bioite, biotte, biotie, biotit, ibotite, boitite, bitoite, bioitte, biottie, biotiet, bbiiotite, biootite, biottite, biotiite, biotitte, biotitee, bbotite, biitite, biooite, biottte, biotiie, biotitt, diotite, jiotite, giotite, viotite, niotite, baotite, buotite, bootite, biitite, biptite, biorite, bioyite, biotate, biotute, biotote, biotire, biotiye, biotitw, biotitr  Mon, 08 Jan 2007 03:49:56 -0600