Ch. 1: Gold and Silver in 1919

• Ch. 1: Gold, Silver in 1919
• Ch. 2: Platinum in 1919
• Ch. 3: Gemstones in 1919

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• Bradford. The Berringa Gold-Field
• Berringa Gold Fields, Australia
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• Louderback. Benitoite.
• Benitoite Description
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• US Geol. Surv. 1911. Gemstones, Metals.
• Ch. 1: Gold, Silver in 1911
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• US Geol. Surv. 1914. Gemstones, Metals.
• Ch. 1: Gold, Silver in 1914
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• US Geol. Surv. 1913. Gemstones, Metals.
• Ch. 1: Gold, Silver in 1913
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• US Geol. Surv. 1882. Gemstones, Metals.
• Ch. 1: Gold, Silver in 1882
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• US Geol. Surv. 1917. Gemstones, Metals.
• Ch. 1: Gold, Silver in 1917
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• US Geol. Surv. 1910. Gemstones, Metals.
• US Geol. Surv. 1922. Gemstones, Metals.
• US Geol. Surv. 1885. Gemstones, Metals.

Deposits Diamond Gemological Properties Gemstones Gold History Mine Mining Production USA

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