Yttrium is a rare earth element which does not occur in the native state. It occurs in uranium ores and is present
in nearly all the
rare earth minerals. It usually exists as a trivalent ion, Y3+, in its compounds, many of which are colourless.
in the Earth's crust is 33 parts per million by mass, whereas the content in lunar soil samples brought back from the Moon
54 to 213 parts per million (ChC).
Yttrium is extracted from bastnäsite-(Y) or xenotime-(Y), and from ion absorption clays, mostly in China. It is also extracted from samarskite-(Y) and fergusonite-(Y) (Dana).
Yttrium-bearing minerals include:
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