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
23 Jun-15:05:15 Re: collection of michael shaw (Crosstimber)
23 Jun-06:34:14 Re: carlos pareja photo collection (Markbeckett)
23 Jun-05:27:07 Re: carlos pareja photo collection (Carlos Pareja)
22 Jun-23:37:13 Sainte marie-aux-mines show 2017 - a wonderful visit (Jordi Fabre)
22 Jun-17:07:26 Re: don lum collection (Don Lum)
22 Jun-16:26:36 Re: sainte marie-aux-mines show 2017 (Gail)
22 Jun-14:31:59 Re: the mizunaka collection (Am Mizunaka)
22 Jun-11:51:23 Re: the mizunaka collection (Philippe Durand)
22 Jun-11:21:47 Re: carlos pareja photo collection (Tobi)
22 Jun-11:20:24 Re: the mizunaka collection - quartz (Tobi)
22 Jun-02:10:38 Re: trigonic terminated tourmaline? (Lluis)
22 Jun-01:31:31 "chrome" / yellow cerussite. Colour causing mechanisms. (Peter Olubas)
21 Jun-23:31:28 Sainte marie-aux-mines show 2017 - hotter and hotter (Jordi Fabre)
21 Jun-23:24:31 The mizunaka collection - quartz (Am Mizunaka)
21 Jun-23:21:02 Re: trigonic terminated tourmaline? (Peter Lemkin)
21 Jun-18:53:36 Trigonic terminated tourmaline? (Texasdigger)
21 Jun-13:35:53 Re: help identifying this.... (Bigkingman)
21 Jun-12:40:10 Re: sainte marie-aux-mines show 2017 (Fiebre Verde)
21 Jun-11:32:37 Re: sainte marie-aux-mines show 2017 (Philippe Durand)
21 Jun-11:20:29 Re: carlos pareja photo collection (Carlos Pareja)
21 Jun-10:46:53 Re: help identifying this.... (Dale Hallmark)
21 Jun-10:17:28 Re: help identifying this.... (Riccardo Modanesi)
21 Jun-10:04:37 Re: collection of michael shaw (Crosstimber)
21 Jun-02:08:03 Re: collection of heimo hellwig (Heimo Hellwig)
21 Jun-01:12:20 Sainte marie-aux-mines show 2017 - hot! (Jordi Fabre)

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
29301


The time now is Jun 23, 2017 15:37

Search for a textSearch for a text   

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


View previous topic :: View next topic  
Author Message

Asgardird




Joined: 09 Apr 2017
Posts: 1
Location: Chertsey

View user's profile

Send private message

PostPosted: Apr 09, 2017 02:00    Post subject: Geodes  

Hi, my name Danny. I bought some geodes on the internet, so I don't really know where they came from after opening them. I searched on Internet and they seem to be Quartz, but I am not sure since I know nothing about that. Maybe someone can help me.


20170408_205435~02.jpg
 Description:
 Viewed:  669 Time(s)

20170408_205435~02.jpg



20170408_203650.jpg
 Description:
 Viewed:  676 Time(s)

20170408_203650.jpg



20170408_203407.jpg
 Description:
 Viewed:  667 Time(s)

20170408_203407.jpg



eyeemfiltered1491016062329.jpg
 Description:
 Viewed:  663 Time(s)

eyeemfiltered1491016062329.jpg



20170331_205907~01.jpg
 Description:
 Viewed:  661 Time(s)

20170331_205907~01.jpg



20170331_205311~01~01~01.jpg
 Description:
 Viewed:  659 Time(s)

20170331_205311~01~01~01.jpg



20170408_202611.jpg
 Description:
 Viewed:  660 Time(s)

20170408_202611.jpg


Back to top
Reply to topic Reply with quote
Like
   

Tobi




Joined: 07 Apr 2009
Posts: 2408
Location: Good Old Germany


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Apr 09, 2017 03:48    Post subject: Re: Geodes  

Hi Danny,

they are not easy to determine only by photos. The first one could be a celestite (a strontium sulfate) from Madagascar, but not sure. Please read this carefully in order to get a better support here: http://www.mineral-forum.com/message-board/viewtopic.php?p=19487#19487

Tobi
Back to top
Reply to topic Reply with quote
Like
   

Peter Megaw
Site Admin



Joined: 13 Jan 2007
Posts: 769
Location: Tucson, Arizona


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Apr 09, 2017 04:11    Post subject: Re: Geodes  

Tobi is right, please check out the protocols for asking for help in identification.

More so than for minerals per se, Identifying geode localities requires pictures of the outside "rind" too. Many are distinctive

_________________
Siempre Adelante!
Back to top
Reply to topic Reply with quote
Like
   

Bob Harman




Joined: 06 Nov 2015
Posts: 207
Location: Indiana


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Apr 09, 2017 06:30    Post subject: Re: Geodes  

Hi Asgardird, I agree with the other's advise to you.

As to your geodes, they look to me like all quartz and microcrystalline quartz (chalcedony), but are difficult to evaluate as your pix are not so good. I do not see any celestine, as was suggested. The rind of all the geodes looks wrong for Madagascan celestine geodes. Calcite might be present, but again is difficult to evaluate.
The geodes are probably either from Mexico or Morocco. They all look to be igneous type in origin. BOB
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