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18 Oct-05:56:10 Re: collection of manuel mesa (Manuel Mesa)
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16 Oct-13:38:13 Re: collection of manuel mesa (Heimo Hellwig)
16 Oct-12:53:02 Re: mineralogical museum luigi celleri (mum) of san piero in campo in elba island, italy (Marco Campos-venuti)
16 Oct-12:41:10 Mineralogical museum luigi celleri (mum) of san piero in campo in elba island, italy (Marco Campos-venuti)
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16 Oct-10:38:01 Re: collection of manuel mesa (Manuel Mesa)
16 Oct-08:41:47 Re: collection of michael shaw (Crosstimber)
15 Oct-15:17:43 Re: franjungle collection (Franjungle)
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14 Oct-11:34:43 Re: collection of michael shaw (Crosstimber)

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Help me identify these rocks/minerals
  
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borg_jos




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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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