It is estimated that only 6% of all meteorites that hit the earth are iron type meteorites. however, nearly half of known meteorites are iron meteorites. what is the reason for this discrepancy?

the conditions that made the byzantine empire vulnerable to attacks by the muslin turks were the sack of constantinople by western crusaders, the conquests of the sultanate of rum, presence of rival kingdoms and finally the set up of fiefdoms at the empire which were owned by the ghazis (turkish warriors).