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15 Jul-14:55:06 Sainte marie-aux-mines show 2018 / waiting for ste. Marie 2019! (Jordi Fabre)
15 Jul-09:03:39 Re: collection of michael shaw (Crosstimber)
14 Jul-17:32:24 The mizunaka collection - rhodochrosite (Am Mizunaka)
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Help me identify these rocks/minerals
  
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borg_jos




Joined: 23 Sep 2017
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PostPosted: Sep 23, 2017 10:14    Post subject: Help me identify these rocks/minerals  

Can someone help me understand what are these minerals and if they are dangerous?


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Bob Harman




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PostPosted: Sep 23, 2017 10:22    Post subject: Re: Help me identify these rocks/minerals  

The red one and blue one are man created and probably not natural although the blue one might be a post mining color enhanced chalcanthite. The purple one in the middle is a small piece of amethyst variety of quartz. As there are so many localities for amethyst, no specific locality can be given for a small generic piece.

None of the minerals are dangerous unless thrown at someone else's head or eaten for a snack. BOB
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Mike Chontofalsky




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PostPosted: Sep 23, 2017 10:52    Post subject: Re: Help me identify these rocks/minerals  

I would add that the one on the right appears to be lab/ home grown copper sulfate and is toxic. I had my chemistry students grow these and more.
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borg_jos




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PostPosted: Sep 23, 2017 11:03    Post subject: Re: Help me identify these rocks/minerals  

Attaching more pics


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alfredo
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PostPosted: Sep 23, 2017 11:19    Post subject: Re: Help me identify these rocks/minerals  

The blue one is, as others have stated, lab-grown copper sulphate crystals, and only harmful if you eat it. But it tastes sooooooooo bad, that no one will eat it. If some child puts even a tiny grain of it in their mouth, they would be immediately furiously spitting it out, with no further harm. But keep it away from toddlers anyway.
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