Actes du premier colloque international de l'association Verre et Histoire, Paris-La Défense / Versailles, 13-15 octobre 2005

Dr Marco VERITÀ, Stazione Sperimentale del Vetro, Venice (Italy)

Italian window glass chemical composition from the Roman time to the 18th century

Table 2 – San Vincenzo al Volturno, 9th century:
composition in wt% of the oxides of window glass fragments analysed by Jan Freestone.

sample colour SiO2 Al2O3 Na2O K2O CaO MgO SO3 P2O5 Cl TiO2 Fe2O3 MnO Sb2O3 CuO PbO SnO2
44701Qnatural65,02,6117,31,036,80,830,330,140,780,110,930,700,941,161,040,32
44709Wnatural63,52,6317,00,716,740,820,36 0,760,120,780,650,720,242,372,65
44710Znatural66,22,5217,30,847,00,930,520,170,90,130,730,680,750,580,98 
44714Rnatural67,82,6117,00,997,070,730,42 0,740,110,830,670,390,300,20 
44716Ynatural65,42,8417,10,916,270,790,45 0,73 0,790,621,010,492,47 
44727Spale blue67,32,4518,00,856,350,720,42 0,730,110,660,411,110,680,34 
10109607streaky67,82,2018,00,707,161,120,410,120,630,090,700,90    
10109608streaky67,42,1817,80,787,091,070,430,140,640,120,730,820,560,31  
10109609streaky65,82,3017,00,736,21,040,500,210,75 0,920,451,002,080,88