I made an analysis of it some time ago ; I could not find any Tellurium in it, but the blow-pipe always afterwards retained the odour of this metal. Duripg my researches on Selenium, I recollected this circumstance, and the friend who possessed the mineral,... Exotic Mineralogy,: Or, Coloured Figures of Foreign Minerals, as a ... - Pagina 108 di James Sowerby - 1817 - 351 pagine Visualizzazione completa -
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