[Rockhounds] Toxic minerals

[B & B]

Hello 
Want to know if any body could lend a hand. I am looking for a list of stones that are toxic. When I am cutting some rocks I know that Malachite is toxic and so is Iron ore. I use a mask when I am working with these stones. Is there any more I should be aware of thanks for all your help Betty 
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http://g.msn.ca/ca55/224

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