Rare 12 Ounce Gold in Skarn Specimen - Ecuador

This is a huge 12.1 Troy Ounce (375.1 Grams) very rare Gold in Skarn and Quartz Specimen from the Sultana Mine in Zamora, Ecuador. A specific gravity test shows that there is approximately 17.42 Grams (0.56 Troy Ounce) of gold contained in this specimen. I do have to say that because this specimen contains about 55% quartz and 45% scarn, the specific gravity test is not 100% accurate. Specific gravity tests become very complicated when there is more than one material in the host rock so the gold estimate is really an educated guess rather than a 100% accurate number. But even if we are a few percent off on the gold content this is still a super good deal. This rare gold specimen is on consignment from a prospector in California. I only have three gold specimens left from this location, so if you want one for your collection, don't hesitate. This is the largest one of the three and it is the only one that has a significant amount of quartz as well as skarn, making it extremely rare and unique. It has spots of visible gold on the surface, and more gold contained inside the skarn. This is likely the only time that you will see any gold specimens from this location for sale so get one or more of these for your gold collection while you have the chance. The size of this gold specimen is 3" long x 2.5" wide x 2.5" thick.

Ok, what is skarn you ask? Skarns can form during regional or contact metamorphism and from a variety of metasomatic processes involving fluids of magmatic, metamorphic, meteoric, and/or marine origin. They are found adjacent to plutons, along faults and major shear zones, in shallow geothermal systems, on the bottom of the seafloor, and at lower crustal depths in deeply buried metamorphic terrains. What links these diverse environments, and what defines a rock as skarn, is the mineralogy. This mineralogy includes a wide variety of calc-silicate and associated minerals but usually is dominated by garnet and pyroxene.

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