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30 Mar-05:20:42 Re: collection of heimo hellwig (Heimo Hellwig)
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30 Mar-02:48:15 Re: collection of heimo hellwig (Jordi Fabre)
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29 Mar-22:45:29 Re: a mineralogical trip through the states of usa - arizona (Tripleroyale)
29 Mar-19:22:10 Re: m.r. Vol 48 (2) tri-state district (Robert Seitz)
29 Mar-18:14:58 The mizunaka collection - sphalerite (Am Mizunaka)
29 Mar-14:51:37 Re: collection of heimo hellwig (Umgodoye)
29 Mar-10:34:32 Re: a mineralogical trip through the states of usa - indiana (Bob Harman)
29 Mar-10:11:13 Re: m.r. Vol 48 (2) tri-state district (Bob Harman)
29 Mar-09:23:21 Re: don lum collection (Don Lum)
29 Mar-07:54:40 Re: oddities from brandberg, namibia (Pierre Joubert)
29 Mar-06:07:29 Re: collection of heimo hellwig (Heimo Hellwig)
29 Mar-04:26:37 Re: don lum collection (Pierre Joubert)
28 Mar-22:01:47 The mizunaka collection - quartz with hematite (Am Mizunaka)
28 Mar-18:21:22 Re: don lum collection (Don Lum)
28 Mar-15:20:24 Re: collection of michael shaw (Crosstimber)
28 Mar-14:31:30 Belgium - liege interminal show. (Roger Warin)
28 Mar-07:55:20 Re: collection of heimo hellwig (Heimo Hellwig)
28 Mar-07:36:30 Re: collection of fiebre verde - chivor (#490) (Fiebre Verde)
28 Mar-06:11:59 Re: collection of heimo hellwig (Pierre Joubert)

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Green rock Id help
  
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ilzho




Joined: 31 Jul 2011
Posts: 13
Location: Dallas

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PostPosted: Feb 14, 2017 18:04    Post subject: Green rock Id help  

Hello:

I do not know where this came from (other than my mother gave it to me, she was a science teacher), but I am trying to identify a number of minerals and rocks that I have.
Any information is greatly appreciated.
Thank you,
David



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CranCowan




Joined: 28 Sep 2016
Posts: 18
Location: Hines


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PostPosted: Feb 14, 2017 18:13    Post subject: Re: Green rock Id help  

Looks like malachite. A drop of muriatic acid would dissolve it while making bubbles.
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