Cobaltite Silver Ore rough slab, 30 x 35 x 4mm, rare native silver ore (rs4891)
Cobaltite natural native Silver Ore rough slab
Origin: Cobalt mine, Ontario, Canada
Characteristics: Silver with grey and brass colored material (maybe telluride, brass or gold), natural material that produces a bright mirror shine. If your making cabs, this can make 2 beautiful cabs.
Approx size: 1 1/4" x 1 3.8" x 4 mm, weight: 23.9g
This native ore is the rare material from the Cobalt Mine near Ontario, Canada. Make a cabochon and your jewelry will stand out, in the bright light the shine just pops out.
The Cobalt silver rush of 1903 happened when huge veins of silver were discovered by railway workers. By 1905 a full-scale silver rush was underway, and the town of Cobalt, Ontario sprang up to serve as its hub. By 1908 Cobalt produced 9% of the world's silver. However, the ore ran out fairly rapidly, and most of the mines were closed by the 1930s. There were several small revivals, in World War II and again in the 1950s, but both petered out and today there is no active mining in the area. In total, the Cobalt area mines produced 460 million ounces of silver.
I use a 24 mm coin and 10 mm squares in my pictures to help with image sizing.
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