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Marouenca
Joined: 22 Mar 2017
Posts: 21
Location: Tunisia
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 Posted: May 02, 2017 16:58 Post subject: Identify red mineral |
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Hi guys hope you can help me with this. There is no reaction with hcl
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Bob Carnein
Joined: 22 Aug 2013
Posts: 62
Location: Florissant, CO
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| Posted: May 02, 2017 18:47 Post subject: Re: Identify red mineral |
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| 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
Joined: 22 Mar 2017
Posts: 21
Location: Tunisia
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| Posted: May 04, 2017 08:31 Post subject: Re: Identify red mineral |
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| Hardness test was 4
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Peter Megaw
Site Admin
Joined: 13 Jan 2007
Posts: 769
Location: Tucson, Arizona
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| Posted: May 04, 2017 08:55 Post subject: Re: Identify red mineral |
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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
Joined: 22 Mar 2017
Posts: 21
Location: Tunisia
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| Posted: May 04, 2017 09:16 Post subject: Re: Identify red mineral |
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| Yes its feel heavier and very hard
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Pete Richards
Site Admin
Joined: 29 Dec 2008
Posts: 547
Location: Northeast Ohio
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| Posted: May 04, 2017 10:41 Post subject: Re: Identify red mineral |
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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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Collecting and studying crystals with interesting habits, twinning, and epitaxy |
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