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Specimen 3: 5cm x 4cm x 1
Northampton
Total weight: 199 grams
3cm x 1cm - 10g
Total weight: 99 grams
MANGANESE NODULE (POLYMETALLIC), Pacific Ocean XMN029 Stromatolites Specimen 3: 5cm x 4cmManganese Nodule (Polymetallic) Clarion Clipperton fracture zone Pacific Ocean Total Weight: 2. 03 grams Approximate dimensions: 17mm x 15mm x 11mm 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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