Gold
In-situ leaching has not been used on a commercial scale for gold mining. A three-year pilot program was undertaken in the 1970s to in-situ leach gold ore at the Ajax mine in the Cripple Creek district in the US, using a chloride and iodide solution. After obtaining poor results, perhaps because of the complex telluride ore, the test was halted.
Read more about this topic: In-situ Leach
Famous quotes containing the word gold:
“On the breast of her gown, in fine red cloth, surrounded with an elaborate embroidery and fantastic flourishes of gold thread, appeared the letter A.”
—Nathaniel Hawthorne (1804–1864)
“As in digging for precious metals in the mines, much earthy rubbish has first to be troublesomely handled and thrown out; so, in digging in one’s soul for the fine gold of genius, much dullness and common-place is first brought to light.”
—Herman Melville (1819–1891)
“But tell me: how did gold get to be the highest value? Because it is uncommon and useless and gleaming and gentle in its brilliance; it always gives itself. Only as an image of the highest virtue did gold get to be the highest value. The giver’s glance gleams like gold. A golden brilliance concludes peace between the moon and the sun. Uncommon is the highest virtue and useless, it is gleaming and gentle in its brilliance: a gift- giving virtue is the highest virtue.”
—Friedrich Nietzsche (1844–1900)