e/Gold in California

Information
has gloss	eng: Gold in California became highly concentrated there as the result of global forces operating over hundreds of millions of years. Volcanoes, tectonic plates and erosion all combined to concentrate billions of dollars worth of gold in the mountains of California. During the California Gold Rush, gold-seekers known as "Forty-Niners" retrieved this gold, at first using simple techniques, and then developed more sophisticated techniques, which spread around the world.
lexicalization	eng: Gold in California
instance of	(noun) a soft yellow malleable ductile (trivalent and univalent) metallic element; occurs mainly as nuggets in rocks and alluvial deposits; does not react with most chemicals but is attacked by chlorine and aqua regia gold, atomic number 79, Au

Media
media:img	California Gold Rush relief map.png
media:img	Subduction magma rising.jpg