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26 Apr-02:52:04 Collection of carles millan - beryl and muscovite from pakistan (Carles Millan)
25 Apr-20:56:54 The mizunaka collection - rhodochrosite with pyrite (Am Mizunaka)
25 Apr-14:20:07 Re: new generation for picture - ploum (Ploum)
25 Apr-12:07:16 Re: agates in sicily (Alanbartlett)
25 Apr-11:53:31 Re: the mizunaka collection (Am Mizunaka)
25 Apr-11:35:15 Re: collection of michael shaw (Crosstimber)
25 Apr-11:16:01 Re: agates in sicily (Marco Campos-venuti)
25 Apr-11:09:18 Re: agates in sicily (James)
25 Apr-10:59:28 Re: agates in sicily (Alanbartlett)
25 Apr-10:52:28 Re: agates in sicily (James)
25 Apr-10:35:57 Re: how to start a new topic (Alanbartlett)
25 Apr-10:35:01 Agates in sicily (Alanbartlett)
25 Apr-10:02:13 Re: how to start a new topic (James)
25 Apr-09:56:36 Re: how to start a new topic (Alanbartlett)
25 Apr-09:31:08 Re: colourful crystals plus colourless crystals (Bashka)
25 Apr-04:58:11 Re: the collection of pierre and riana joubert (Pierre Joubert)
25 Apr-04:48:28 Re: collection of fiebre verde - peñas blancas (#682) (Fiebre Verde)
25 Apr-04:48:02 Re: the mizunaka collection (Pierre Joubert)
24 Apr-21:36:07 Re: chinese realgar (Rubytime)
24 Apr-16:56:48 Re: tourmaline included smokey quartz specimen real or fake? (Striker.Svr)
24 Apr-15:54:16 The mizunaka collection - rhodochrosite (Am Mizunaka)
24 Apr-14:30:17 Re: colourful crystals plus colourless crystals (Bob Carnein)
24 Apr-12:42:26 Re: colourful crystals plus colourless crystals (Bob Harman)
24 Apr-12:15:27 Re: colourful crystals plus colourless crystals (Bashka)
24 Apr-12:04:13 Colourful crystals plus colourless crystals (Bashka)

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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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