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Discovery timeline
1879

Elements discovered in 1879

3 elements

Element	Symbol	Atomic number	Atomic mass	Minerals
Scandium	Sc	21	45.0 u	22
Samarium	Sm	62	150.4 u	5
Thulium	Tm	69	168.9 u	—

A data reference for mineralogy: thousands of minerals with formula, crystal system, hardness and type locality, and the 118 chemical elements they are built from.

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