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Collection Tier:
Tier 3

Rocks and Minerals ➔ Copper

Identifier:
2019.1.1849
Description:
Copper is a native element and often occurs in fine-grained volcanic rocks such as basalt. It is red and orange in color until exposed to oxygen which can cause it to turn green and black over time. It was one of the first metals to be used by humans and was the first to be smelted from ores. 

Formula: Cu
Source:
Museum Collection
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