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Kasompi Mine
Weight: 97 grams
This fossil has from the Late Ordovician-Early Sandbian period
120 grams
Total weight: 238 grams
MANGANESE NODULE (POLYMETALLIC), Pacific Ocean XMN039 Archaean Kasompi MineManganese Nodule (Polymetallic) Clarion Clipperton Fracture Zone Pacific Ocean Total Weight: 1. 16 grams Approximate dimensions: 14mm x 13mm x 9mm 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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