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The abundance of antimony in the Earth's crust is estimated at 0. 2 to 0. 5 parts per million, comparable to thallium at 0. 5 parts per million and silver at 0. 07 ppm.
Even though this element is not abundant, it is found in over 100 mineral species.
Antimony is sometimes found natively, but more frequently it is found in the sulfide stibnite ( Sb < sub > 2 </ sub > S < sub > 3 </ sub >) which is the predominant ore mineral.

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