| The structure of boehmite consists of double layers of oxygen octahedra partially filled with Aluminium cations. |
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| If fine particle-size gibbsite was used, the yield of boehmite decreased and the yield of the poorly crystallized phase increased in all the media. |
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| In general, a quasi-crystalline boehmite precursor and an additive are converted to a quasi-crystalline boehmite containing the additive in a homogeneously dispersed state. |
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| Only those ores containing significant concentrations of the minerals gibbsite and boehmite, which contain 65 and 85 percent alumina, respectively, are generally considered economical to be processed. |
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| Gibbsite is found largely in tropical areas on either side of the Equator, while boehmite is found largely north of the subtropical belt in Russia, Kazakhstan, Turkey, China, and Greece. |
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| A friction material characterized in that said friction material is blended with scaly boehmite which belongs to the ortho-rhombic system of crystallographic structure. |
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