Page:Mémoires de l’Académie des sciences, Tome 8.djvu/547

Table des proportions de quelques silicates en considérant la silice comme formée de $51{,}95$ d’oxigène, et $48{,}05$ de silicium : le poids de l’atome étant alors de $577{,}50.$

${\begin{array}{ll|c|c|c}\qquad {\text{DÉNOMINATION}}.&&{\text{P}}\scriptstyle {\text{OIDS DE}}&{\text{S}}\scriptstyle {\text{ILICE}}.&{\text{B}}\scriptstyle {\text{ASES}}.\\&&\scriptstyle {\text{L'ATOME}}.\\\hline {\text{Silicate bi-alumineux}}&{\rm {{\overset {...}{A}}\,^{2}{\overset {...}{S}}i}}&1862{,}14&31{,}01&68{,}99\\{\text{Silicate d'alumine}}&{\rm {{\overset {...}{A}}{\overset {...}{S}}i}}&1219{,}80&47{,}34&52{,}66\\{\text{Bisilicate }}\ \ {\text{ –––––}}&{\rm {{\overset {...}{A}}{\overset {...}{S}}i^{2}}}&1797{,}32&64{,}26&35{,}74\\{\text{Trisilicate }}{\text{ –––––}}&{\rm {{\overset {...}{A}}{\overset {...}{S}}i^{3}}}&2374{,}82&72{,}95&27{,}05\\{\text{Silicate de chaux}}&{\rm {{\overset {..}{C}}a^{3}{\overset {...}{S}}i\,^{2}}}&3291{,}18&35{,}09&64{,}91\\{\text{Bisilicate}}\ \ {\text{ –––––}}&{\rm {{\overset {..}{C}}a^{3}{\overset {...}{S}}i^{4}}}&4446{,}18&51{,}95&48{,}05\\{\text{Trisilicate}}{\text{ –––––}}&{\rm {{\overset {..}{C}}a{\overset {...}{S}}i^{2}}}&1867{,}06&61{,}86&38{,}14\\{\text{Silicate de fer}}&{\rm {{\overset {..}{F}}\,^{3}{\overset {...}{S}}i^{2}}}&3790{,}29&30{,}47&69{,}53\\{\text{Bisilicate}}\ \ {\text{ –––––}}&{\rm {{\overset {..}{F}}\,^{3}{\overset {...}{S}}i^{4}}}&4945{,}29&46{,}71&53{,}29\\{\text{Trisilicate}}{\text{ –––––}}&{\rm {{\overset {..}{F}}{\overset {...}{S}}i^{2}}}&2033{,}43&56{,}80&43{,}20\\{\text{Silicate de magnésie}}&{\rm {{\overset {..}{M}}\,^{3}{\overset {...}{S}}i^{2}}}&2705{,}16&42{,}70&57{,}30\\{\text{Bisilicate}}\ \ {\text{ –––––}}&{\rm {{\overset {..}{M}}\,^{3}{\overset {...}{S}}i^{4}}}&3860{,}16&59{,}84&40{,}16\\{\text{Trisilicate}}{\text{ –––––}}&{\rm {{\overset {..}{M}}{\overset {...}{S}}i^{2}}}&1671{,}72&69{,}09&30{,}91\\{\text{Silicate de manganèse}}&{\rm {{\overset {..}{M}}a^{3}{\overset {...}{S}}i^{2}}}&3889{,}71&29{,}69&70{,}31\\{\text{Bisilicate}}\ \ {\text{ –––––}}&{\rm {{\overset {..}{M}}a^{3}{\overset {...}{S}}i^{4}}}&5044{,}71&45{,}79&54{,}21\\{\text{Trisilicate}}{\text{ –––––}}&{\rm {{\overset {..}{M}}a{\overset {...}{S}}i^{2}}}&2066{,}57&55{,}89&44{,}11\\{\text{Silicate de potasse}}&{\rm {{\overset {..}{P}}o^{3}{\overset {...}{S}}i^{2}}}&4694{,}49&24{,}60&75{,}40\\{\text{Bisilicate}}\ \ {\text{ –––––}}&{\rm {{\overset {..}{P}}o^{3}{\overset {...}{S}}i^{4}}}&5849{,}49&39{,}49&60{,}51\\{\text{Trisilicate}}{\text{ –––––}}&{\rm {{\overset {..}{P}}o{\overset {...}{S}}i^{2}}}&2334{,}83&49{,}47&50{,}53\\{\text{Silicate de soude}}&{\rm {{\overset {..}{S}}o^{3}{\overset {...}{S}}i^{2}}}&3500{,}52&33{,}00&67{,}00\\{\text{Bisilicate}}\ \ {\text{ –––––}}&{\rm {{\overset {..}{S}}o^{3}{\overset {...}{S}}i^{4}}}&4655{,}52&49{,}62&50{,}38\\{\text{Trisilicate}}{\text{ –––––}}&{\rm {{\overset {..}{S}}o{\overset {...}{S}}i^{2}}}&1936{,}84&59{,}63&40{,}37\end{array}}$