Word Study
    sillimanite
CIDE DICTIONARY
sillimanite, n. [After Benjamin Siliman, an American meneralogist.]. 
                                            
                                         Same as Fibrolite.                                                                                 [1913 Webster]                                                                                                                    
                                                                                    OXFORD DICTIONARY
sillimanite, n.  an aluminium silicate occurring in orthorhombic crystals or fibrous masses.
                    Etymology
                        B.  Silliman, Amer. chemist d. 1864
                                    
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