USA, 1849: Platinum Price Cited

c. 1848: 1 Troy Oz. Platinum (NYC: Scrap, Bid) = $ 6.70

Dana's textbook was first published in Late 1848, apparently updated with a price table from 1849, consistent with a Low Price for Copper and Tin.

c.1849: 1 Troy Oz. Gold (.999 Fine) = $ 20.68 - 20.69
c.1849: 1 Troy Oz. Gold (Standard) = $ 18.605
c.1849: 1 Troy Oz. Gold (Nugget) = $ 19. - 20.20

c.1849: 1 Troy Oz. Platinum (Ingot, Fine?) = $ 7.50 
c.1849: 1 Troy Oz. Platinum (Ingot, Fine?) = $ 8.333

c.1849: 1 Troy Oz. Silver (.999 Fine) = $ 1.293
c.1849: 1 Troy Oz. Silver (Standard) = $ 1.156

Citation: Manual of mineralogy: including observations on mines, rocks, reduction of Ores, and the Applications of the Science to the Arts; James Dwight Dana (1850) p.387




J. E. Teschemacher reports platina in Californian Gold (c.1848/9?) 
c.1849:



1849: Speculation on Platinum, on news of the CA Gold yield, was suggested.