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coltan
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JPG 300 DPI
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Author:
dreamstime
License:
buy for Personal Use & Commercial
File Type:
JPG
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coltan
columbite
tantalite
tantalum
niobium
element
purity
raw
material
basic
chemistry
isolated
white
background
elemental
industrial
pure
fine
mineral
piece
chunk
natural
mining
unprocessed
rough
discovery
artifact
geology
mineralogy
stone
rock
specimen
analalava
madagascar
resource
boulder
industry
exploitation
native
heap
pile
stack
group