Geocronite

The American Dictionary and Cyclopedia · 1910 · p. 46
[Gr.ge, earth, and kronos, Saturn, the alchemistic name for lead.] ( Min. ) A sulphuret of antimony and lead, from the silver mines of Sala in Sweden, also from Merida in Spain. Lustre, metallic. Color, light lead-gray to grayish-blue. Sp. gr. 6-4-6-6. Comp. Sulphur 16-5, antimony 167, lead 66-8.
Readham'da tam maddeyi gor →