Economic Geology Or Geology in Its Relations to the Arts And Manufactures
The book Economic Geology Or Geology in Its Relations to the Arts And Manufactures was written by author David Page Here you can read free online of Economic Geology Or Geology in Its Relations to the Arts And Manufactures book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Economic Geology Or Geology in Its Relations to the Arts And Manufactures a good or bad book?
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5; and in fusibility it stands intermediate between gold and platinum. When native it is alloyed with a little platinum and iridium, or with gold and silver, as in the Porpezite of Peru, which con- sists, according to Berzelius, of 85. 98 gold, 9. 85 palladium, and 4. 17 silver. It is ductile as well as malleable, and is considerably harder than platinum. It is oxidised and dis- solved by nitric acid; but its proper solvent is nitro-hydro- chloric acid. It forms alloys, most of which are brittl...e, with arsenic, iron, bismuth, lead, tin, copper, silver, gold, and plati- num ; the alloy with nickel is ductile. It is sometimes used for the finely divided scales of mathematical and astronomical instruments; for the smaller chemical weights; and i per cent added to steel produces a smoother cutting edge. Silver. The early and well-known metal Silver is found native in the older rocks, in threads and strings, in arborescent moss-like aggregates, and in plates and nuggets often of considerable magnitude.
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