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Metaconglomerate rock with Zircon Crystals
Amethyst Slice
Specimen 3: 5cm x 4cm x 1
Fluoresce under UV light
Total weight: 67 grams
MANGANESE NODULE (POLYMETALLIC), Pacific Ocean XMN029 Stromatolites Metaconglomerate rock with Zircon CrystalsManganese 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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