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Identify red mineral
  
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Marouenca




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PostPosted: May 02, 2017 16:58    Post subject: Identify red mineral  

Hi guys hope you can help me with this. There is no reaction with hcl


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Bob Carnein




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PostPosted: May 02, 2017 18:47    Post subject: Re: Identify red mineral  

Can you describe the hardness (harder or softer than your fingernail or glass/steel)? If it doesn't react to HCl, it might be gypsum (satin spar), which is very soft.
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Marouenca




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PostPosted: May 04, 2017 08:31    Post subject: Re: Identify red mineral  

Hardness test was 4
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Peter Megaw
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PostPosted: May 04, 2017 08:55    Post subject: Re: Identify red mineral  

what about heft? does it feel heavier/denser than a comparable size chunk of calcite or quartz...or even a regular rock?
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Marouenca




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PostPosted: May 04, 2017 09:16    Post subject: Re: Identify red mineral  

Yes its feel heavier and very hard
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Pete Richards
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PostPosted: May 04, 2017 10:41    Post subject: Re: Identify red mineral  

A very heavy mineral that looks like that and has a hardness of 4 could very well be barite or celestite. Suggest you look into flame tests; both barite and celestite will give distinctive colors to the flame.
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