We use cookies to show content based on your preferences. If you continue to browse you accept their use and installation. More information. >

FMF - Friends of Minerals Forum, discussion and message board
The place to share your mineralogical experiences

FMF English Forum is moderated by John S. White and Peter Megaw
 

Spanish message board






Newest topics and users posts
21 Oct-04:36:26 Re: alfredopetrovite (Lluis)
21 Oct-03:54:44 Re: is it possible to tell a nature made pearl from a cultured pearl without cutting it op (Riccardo Modanesi)
21 Oct-01:54:39 Is it possible to tell a nature made pearl from a cultured pearl without cutting it open? (Trtlman)
21 Oct-01:31:52 Re: new zealand alpine minerals? (Peter Lemkin)
21 Oct-01:10:18 Re: alfredopetrovite (Franjungle)
20 Oct-22:38:38 Re: franjungle collection (Franjungle)
20 Oct-19:49:05 Re: a mineralogical trip through the states of usa - missouri (Turbo)
20 Oct-12:34:25 Re: weird face in quartz (Reef)
20 Oct-12:20:46 Re: mineralogical museum luigi celleri (mum) of san piero in campo in elba island, italy (Tobi)
20 Oct-12:01:57 Re: a mineralogical trip through the states of usa - missouri (Jordi Fabre)
20 Oct-11:37:22 Re: mineralogical museum luigi celleri (mum) of san piero in campo in elba island, italy (Marco Campos-venuti)
20 Oct-11:20:39 Re: weird face in quartz (Marco Campos-venuti)
20 Oct-09:57:45 Re: weird face in quartz (Reef)
20 Oct-09:50:51 Re: collection of michael shaw (Crosstimber)
20 Oct-09:31:56 Re: collection of manuel mesa (Manuel Mesa)
20 Oct-01:22:14 Re: art soregaroli's passing (Jim Robison)
19 Oct-22:22:36 Re: art soregaroli's passing (Pete Modreski)
19 Oct-20:49:51 Re: bayley viburnum trend calcite collection (Turbo)
19 Oct-20:44:35 Re: art soregaroli's passing (John S. White)
19 Oct-20:27:35 Re: bayley viburnum trend calcite collection (Bob Harman)
19 Oct-20:22:59 Re: art soregaroli's passing (Robert Seitz)
19 Oct-20:14:59 Re: bayley viburnum trend calcite collection (Turbo)
19 Oct-19:33:21 Art soregaroli's passing (Peter Megaw)
19 Oct-16:42:40 Re: mineralogical museum luigi celleri (mum) of san piero in campo in elba island, italy (Marco Campos-venuti)
19 Oct-16:23:23 Re: scepters - (1) (Marco Campos-venuti)

For lists of newest topics and postings click here


RSS RSS

View unanswered posts

Why and how to register

Index Index
 FAQFAQ RegisterRegister  Log inLog in
 {Forgotten your password?}Forgotten your password?  

Like
34028


The time now is Oct 21, 2017 09:00

Search for a textSearch for a text   

A general guide for using the Forum with some rules and tips
Any idea about this
  
  Index -> FOR BEGINNERS: What is it? Where is it from?
Like


View previous topic :: View next topic  
Author Message

Marouenca




Joined: 22 Mar 2017
Posts: 21
Location: Tunisia

View user's profile

Send private message

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


20170327_105722_001.jpg
 Dimensions: 4
 Description:
 Viewed:  911 Time(s)

20170327_105722_001.jpg



20170327_105702.jpg
 Description:
 Viewed:  911 Time(s)

20170327_105702.jpg



20170327_105714.jpg
 Dimensions: 4
 Description:
 Viewed:  912 Time(s)

20170327_105714.jpg


Back to top
Reply to topic Reply with quote
Like
   

Riccardo Modanesi




Joined: 07 Nov 2011
Posts: 468
Location: Milano

View user's profile

Send private message

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.

_________________
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.
Back to top
Reply to topic Reply with quote
Like
   

Pierre Joubert




Joined: 09 Mar 2012
Posts: 1355
Location: Western Cape


Access to the FMF Gallery title=

View user's profile

Send private message

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.
_________________
Pierre Joubert


'The tree of silence bears the fruit of peace. '
Back to top
Reply to topic Reply with quote
Like
   
Display posts from previous:   
   Index -> FOR BEGINNERS: What is it? Where is it from?   All times are GMT - 5 Hours
Page 1 of 1
    

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


All pictures, text, design © Forum FMF 2006-2017


Powered by FMF