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Area gold mining and ski racing history [4] Gateway Science Museum: Chico: Butte: Multiple: website, part of California State University, Chico, science and natural history Gaumer's Jewelry & Museum: Red Bluff: Tehama: Natural history: website, minerals and mining museum inside the jewelry store Gold Nugget Museum: Paradise: Butte: Open air
John Kautz, proprietor of Ironstone Vineyards, purchased the gold specimen in 1994 for an undisclosed price; its appraised value at the time was $3.5 million. [1] Kautz had the 60 lb troy (22.4 kg) nugget etched with acid to remove most of the quartz; the resulting gold leaf specimen is 44 lbs troy (16.4 kg).
Exhibits include the crystalline gold Fricot Nugget, weighing 201 troy ounces (6.25 kg), the largest found during the California Gold Rush; a working scale model of a stamp mill over 100 years old, demonstrating the process of extracting gold from quartz rock; and a replica hard rock mine tunnel that allows visitors to better understand California's hard rock mines.
The largest true California gold nugget, known as the "Dogtown Nugget", weighed 54 troy pounds (20 kg), and was found in Magalia, California. A 195-pound troy (73 kg) mass of gold mixed with quartz was also found. Alaska has many sites for the prospector, both public and private.
Nuggets are usually 20.5 to 22 karat (k) purity, meaning they are 83% to 92% gold by mass. Gold nuggets in Australia are often 23 k or slightly higher, while Alaskan nuggets are usually at the lower end of the spectrum. Purity can be roughly assessed by nugget color: the richer and deeper the orange-yellow, the higher the gold content.
The largest gold nugget found using a metal detector is the Hand of Faith, weighing 875 troy ounces (27.2 kg; 60.0 lb), found in Kingower, Victoria, Australia in 1980. Historic large specimens include the crystalline "Fricot Nugget", weighing 201 troy ounces (6.3 kg; 13.8 lb) – the largest one found during the California Gold Rush.
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California State Indian Museum: Sacramento: Sacramento: Sacramento Valley: Native American: Themes of nature, spirit and family California State Mining and Mineral Museum: Mariposa: Mariposa: Gold Country: Mining: Located at the Mariposa County Fairgrounds, gold mining California State Railroad Museum: Sacramento: Sacramento: Sacramento Valley ...