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6 cm approx
These samples contained three minerals that had never been found on Earth before
Approximate measurements 3cm x 1
5cm x 16cm x 1
MANGANESE NODULE (POLYMETALLIC), Pacific Ocean XMN017 Australian Meteorites 6 cm approxManganese Nodule (Polymetallic) Clarion Clipperton fracture zone Pacific Ocean Total Weight: 5. 14 grams Approximate dimensions: 27mm x 17mm x 16mm 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.