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Ships within 48 hours · Estimated delivery Jul 27 - Aug 1
Approximate dimensions: 10cm x 9cm x 1cm
Green River Formation
White Quartz Box
from - Manyara region
5 cm approximate size
MANGANESE NODULE (POLYMETALLIC), Pacific Ocean XMN024 Donponoxylon Approximate dimensions: 10cm x 9cmManganese Nodule (Polymetallic) Clarion Clipperton fracture zone Pacific Ocean Total Weight: 5. 57 grams Approximate dimensions: 27mm x 17mm x 14mm 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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