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G110 Gold Ore

G110 Gold Ore


Here is a a very cool rare item, a piece of Gold Ore from Sunnyside Mine Gladstone, Eureka Mining District, San Juan Country, Colorado, USA.  This high grade gold ore is in a matrix of Quartz and Chalcopyrite. The Chalcopyrite is mostly in the bottom half of the specimen and is more yellow as clearly shown in the fourth picture. This rare specimen measures  5″ x 2 5/8″ x 3/8″.  This is truly a great item for the serious collector.

In stock

SKU: G110 Categories: , Tag:


Chalcopyrite is a copper iron sulfide mineral that crystallizes in the tetragonal system. Chalcopyrite has a brassy to golden yellow color, which often resembles Gold. However, its physical properties such as streak and tenacity are very different from Gold and can easily distinguish it. Chalcopyrite is a beautiful mineral, with good crystals being fairly common. Chalcopyrite is rarely found in association with native copper.

Quartz is the second most common mineral in the Earth’s continental crust. It is mainly composed of Silica or Silica based minerals. Although Quartz is known by a variety of names, the most important distinction between types of Quartz is that of macro-crystalline, individual crystals visible to the unaided eye, and micro-crystalline, where aggregates of crystals are only visible under high magnification. There are many forms of Quartz including Chalcedony, Amethyst, Citrine, and Carnelian which are results of mineral impurities or heat treatments.

Additional information

Weight .5 lbs
Dimensions 5 × 2.625 × .375 in

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