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19 Aug-06:21:44 Re: new generation for picture - ploum (Ploum)
19 Aug-05:01:37 Re: deyu collection (Deyu)
19 Aug-01:01:52 Re: cleaning with water/ spot cleaning guns (agate?) (Volkmar Stingl)
18 Aug-22:32:33 Re: can you identify this 'hedgehog'? (Roger Warin)
18 Aug-19:36:02 Re: the mizunaka collection (Am Mizunaka)
18 Aug-17:33:59 Re: new generation for picture - ploum (Ploum)
18 Aug-16:29:37 Re: can you identify this 'hedgehog'? (Steve Cole)
18 Aug-15:26:04 Re: can you identify this 'hedgehog'? (Joseph D'oliveira)
18 Aug-14:58:51 Re: the mizunaka collection (Philippe Durand)
18 Aug-14:39:20 Re: can you identify this 'hedgehog'? (Peter Megaw)
18 Aug-14:37:21 Re: can you identify this 'hedgehog'? (Kushmeja)
18 Aug-14:21:56 Can you identify this 'hedgehog'? (Steve Cole)
18 Aug-12:03:23 Re: new generation for picture - ploum (Ploum)
18 Aug-10:48:58 Re: cleaning with water/ spot cleaning guns (agate?) (Ceanna)
18 Aug-10:29:24 Re: cleaning with water/ spot cleaning guns (agate?) (Ceanna)
18 Aug-10:17:04 Re: cleaning with water/ spot cleaning guns (agate?) (Ceanna)
18 Aug-02:07:36 Re: presentation of new members - reference thread (Pierre Joubert)
17 Aug-22:38:15 Re: collection of joseph d'oliveira (Joseph D'oliveira)
17 Aug-19:37:58 Re: don lum collection (Don Lum)
17 Aug-18:27:45 Re: cleaning with water/ spot cleaning guns (agate?) (Steveb)
17 Aug-18:22:51 Re: cleaning with water/ spot cleaning guns (agate?) (Kushmeja)
17 Aug-18:08:04 Re: cleaning with water/ spot cleaning guns (agate?) (Bob Harman)
17 Aug-18:01:48 The mizunaka collection - quartz (Am Mizunaka)
17 Aug-17:05:48 Cleaning with water/ spot cleaning guns (agate?) (Ceanna)
17 Aug-16:54:08 Re: presentation of new members - reference thread (Don Lum)

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Any idea about this
  
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Marouenca




Joined: 22 Mar 2017
Posts: 21
Location: Tunisia

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PostPosted: Mar 27, 2017 05:13    Post subject: Any idea about this  

Hi i found this in a canyon and i dont have any idea about it and the color looks strange


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Riccardo Modanesi




Joined: 07 Nov 2011
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Location: Milano

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PostPosted: Mar 27, 2017 05:28    Post subject: Re: Any idea about this  

Hi Marouenca!
Personal opinion: goethite and calcite (or quartz). Try with vinegar or muriatic acid, see whether it fizzes.
Greetings from Italy by Riccardo.

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Hi! I'm a collector of minerals since 1973 and a gemmologist. On Summer I always visit mines and quarries all over Europe looking for minerals! Ok, there is time to tell you much much more! Greetings from Italy by Riccardo.
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Pierre Joubert




Joined: 09 Mar 2012
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PostPosted: Mar 27, 2017 06:29    Post subject: Re: Any idea about this  

Try holding the specimen a little bit further from the camera (you can always crop it afterwards); this should help with the focusing. When you hold it too close, the camera focuses on certain points instead of the whole specimen. Nice, interesting specimen.
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