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Democratic Republic of the Congo
Elite Shungite in natural form chips
Total weight: 748 grams
Photo for illustration purpose
MANGANESE NODULE (POLYMETALLIC), Pacific Ocean XMN028 Shark Bay Democratic Republic of the CongoManganese Nodule (Polymetallic) Clarion Clipperton fracture zone Pacific Ocean Total Weight: 2. 83 grams Approximate dimensions: 17mm x 16mm x 13mm Comes in a membrane display box. Manganese nodules are found on the deep ocean floor. The nodules are mainly composed of iron and manganese oxide, but may also contain nickel, copper and cobalt. It is estimated that the nodules grow at an extremely slow rate of only a few millimetres per million years.
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