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21 cm including clasp
Carter County
Weight: 406 grams
Enhanced insight
MANGANESE NODULE (POLYMETALLIC), Pacific Ocean XMN011 Gemstone Bottles 21 cm including claspManganese Nodule (Polymetallic) Clarion Clipperton fracture zone Pacific Ocean Total Weight: 10. 18 grams Approximate dimensions: 27mm x 26mm x 21mm 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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