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22 Oct-08:21:27 Help with identification of rock/mineral (Mineralien)
22 Oct-08:18:17 Help identify these minerals (stumped!!!) (Profpepper)
22 Oct-08:06:12 Re: rarest quartz twins with inclined axes c (Reef)
22 Oct-07:52:02 Re: rarest quartz twins with inclined axes c (Reef)
22 Oct-07:47:22 Re: art soregaroli's passing (Peter)
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22 Oct-07:32:34 Re: munich show (mineralientage) 2017 (Jordi Fabre)
22 Oct-07:10:06 Re: collection of tobi (Tobi)
22 Oct-06:39:09 Rarest quartz twins with inclined axes c (Reef)
22 Oct-06:34:27 Re: collection of tobi (Tobi)
22 Oct-05:51:32 Re: new generation for picture - ploum (Jordi Fabre)
22 Oct-05:27:08 Re: scepters - (1) (Reef)
22 Oct-05:16:09 Re: new generation for picture - ploum (Ploum)
21 Oct-17:45:47 Re: art soregaroli's passing (Jordi Fabre)
21 Oct-16:42:20 Re: is it possible to tell a nature made pearl from a cultured pearl without cutting it op (Lluis)
21 Oct-16:09:50 Re: alfredopetrovite (Don Lum)
21 Oct-16:04:11 Re: is it possible to tell a nature made pearl from a cultured pearl without cutting it op (Roger Warin)
21 Oct-15:41:58 Re: don lum collection (Don Lum)
21 Oct-12:15:41 Re: scepters - (1) (Travis Hetsler)
21 Oct-12:15:20 Re: is it possible to tell a nature made pearl from a cultured pearl without cutting it op (Lluis)
21 Oct-11:52:21 Re: is it possible to tell a nature made pearl from a cultured pearl without cutting it op (Trtlman)
21 Oct-11:35:07 Re: new generation for picture - ploum (Ploum)
21 Oct-10:07:33 Re: alfredopetrovite (John Jaszczak)
21 Oct-04:36:26 Re: alfredopetrovite (Lluis)
21 Oct-03:54:44 Re: is it possible to tell a nature made pearl from a cultured pearl without cutting it op (Riccardo Modanesi)

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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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