Calid )(d.704),  Ja'far al-Sadiq ,  Jabir Ibn Hayyan  and Ibn Wahshiyya  (.870)  who wrote chemical works which were subsequently used by  Al-Dimashqi  in his Mineralogy.  al-Razi  and  Muhammed ibn Umail al-Tamimi  (wrote  Miftah al-hikma al-'uzma ).  Al-Farabi  (d. 950) and  Ibn Badis  on  Silver filling   also wrote on chemistry, and