My host says that the two principal improvements introduced by foreigners have been, first, reducing by previous roasting the copper pyrites
-- which, being the common ore in Cornwall, the English miners were astounded on their arrival to find thrown away as useless: secondly, stamping and washing the scoriae from the old furnaces -- by which process particles of metal are recovered in abundance.
Straight from the ocean's depths rose towering cliffs, shot with brown and blues and greens--withered moss and lichen and the verdigris of copper, and everywhere the rusty ocher of iron pyrites
A natural salesman with a winning personality, he's been stuck in the minor leagues because he's incapable of distinguishing gold from pyrites
The forty or so essays are uneven in length and quality; although there are some glints of genuine gold here and there, there is an overwhelming weight of pyrites
dross to be silted through by the reader.
The method of extraction will involve biological leaching to dissolve the metals from the pyrites
, followed by solvent extraction and electrowinning.
I say to myself, "This is my kind of store," as I gawk at its pyrites
, its calcites, and its bounty of baubulous delights.
Looking for iron pyrites
will get in the way of actually finding gold, and iron pyrites
are valued only because it is believed they am gold.
In certain circumstances people will treat iron pyrites
(fool's gold) indistinguishably from gold.
75 tonnes of silver, 359 tonnes of molybdenum in addition to pyrites
and sulphuric acid.
In Norway it owned 100 percent of Stordo pyrites
mine, and in 1929 it founded a subsidiary with a work force of eight hundred in Kexholmen, Finland.
Qatars major exports to India include Petrochemicals, LNG, fertilizers, Sulphur and Iron Pyrites