Ch. 1: Gold and Silver in 1912

• Ch. 1: Gold, Silver in 1912
• Ch. 2: Platinum in 1912
• Ch. 3: Gemstones in 1912

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• Bradford. The Berringa Gold-Field
• Berringa Gold Fields, Australia
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• Bradford. The Berringa Gold-Field
• Berringa Gold Fields, Australia
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• US Geol. Surv. 1908. Gemstones, Metals.
• Ch. 1: Gold, Silver in 1908
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• US Geol. Surv. 1906. Gemstones, Metals.
• Ch. 1: Gold, Silver in 1906
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• US Geol. Surv. 1887. Gemstones, Metals.
• Ch. 1: Gold, Silver in 1887
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• US Geol. Surv. 1889-90. Gemstones, Metals.
• Ch. 1: Gold, Silver in 1889/90
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• US Geol. Surv. 1918. Gemstones, Metals.
• Ch. 1: Gold, Silver in 1918
•  

• 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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