bentorite

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• Bentorite — is a mineral with the chemical formula Ca6(Cr,Al)2(SO4)3(OH)12·26(H2O). It is colored violet to light violet. Its crystals are hexagonal to dihexagonal dipyramidal. It is transparent and has vitreous luster. It has perfect cleavage. It is not… …   Wikipedia

• bentorite — noun A hard transparent violet mineral with vitreous lustre …   Wiktionary

• List of minerals A-B (complete) — It is currently not possible to have a complete list of minerals . The International Mineralogical Association is the international group that recognises new minerals and new mineral names, however minerals discovered before 1959 did not go… …   Wikipedia

• List of minerals — This is a List of minerals for which there are Wikipedia articles. Mineral variety names and mineraloids are to be listed after the valid minerals for each letter.For a complete listing (about 4,000) of all mineral names: List of minerals… …   Wikipedia

• Liste des mineraux (lettre B) — Liste des minéraux (lettre B) liste des minéraux A B C D E F G H I J K L M N O P Q R S T U V W …   Wikipédia en Français

• Liste des minéraux (lettre B) — v · Liste des minéraux A • B • C • D • E • F  …   Wikipédia en Français

• Liste des minéraux (lettre b) — liste des minéraux A B C D E F G H I J K L M N O P Q R S T U V W …   Wikipédia en Français

• Minéraux composites (lettre B) — Liste des minéraux (lettre B) liste des minéraux A B C D E F G H I J K L M N O P Q R S T U V W …   Wikipédia en Français

• BENTOR, JACOB — (1910–2002), geologist specializing in the geology, petrology, and tectonics of the Middle East. Bentor was born in Koenigsberg, Germany, and after studying linguistics at the Sorbonne in Paris and physical science there and in Berlin immigrated… …   Encyclopedia of Judaism