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
19 Jun-00:44:02 Re: a potpourri of musings....barely related to minerals. (Peter Lemkin)
19 Jun-00:01:57 Re: fake ruby? (Fuss)
18 Jun-22:24:43 Re: a potpourri of musings....barely related to minerals. (Bob Harman)
18 Jun-13:28:28 Re: cleaning nifontovite (Linus)
18 Jun-10:58:47 Re: collection of annemieke en rob schnerr (Rob Schnerr)
18 Jun-10:52:09 Re: cinnabar and not realgar inclusions? (Rob Schnerr)
18 Jun-08:03:25 Re: malachite (Raystraw)
18 Jun-06:40:06 Re: cleaning nifontovite (Bob Harman)
18 Jun-06:38:09 Re: cleaning nifontovite (Peter Megaw)
18 Jun-04:49:48 Re: cleaning nifontovite (R Saunders)
18 Jun-01:11:10 Re: collection of annemieke en rob schnerr (Tobi)
18 Jun-01:03:33 Re: malachite (Tobi)
17 Jun-22:03:54 Re: cleaning nifontovite (Peter Megaw)
17 Jun-19:20:20 Re: malachite (Bob Harman)
17 Jun-17:54:29 Malachite (Raystraw)
17 Jun-14:53:24 Re: cleaning nifontovite (Bob Harman)
17 Jun-14:53:18 Re: cleaning nifontovite (Kushmeja)
17 Jun-14:40:38 The mizunaka collection - quartz (Am Mizunaka)
17 Jun-14:37:55 Cleaning nifontovite (Linus)
17 Jun-09:44:35 Re: collection of michael shaw (Crosstimber)
17 Jun-08:53:56 Re: collection of annemieke en rob schnerr (Rob Schnerr)
17 Jun-07:36:08 Re: cinnabar and not realgar inclusions? (Niels Brouwer)
17 Jun-06:51:44 Re: cinnabar and not realgar inclusions? (Nicu)
17 Jun-02:55:40 Re: cinnabar and not realgar inclusions? (Rob Schnerr)
16 Jun-20:41:14 Re: vics collection (Bob Harman)

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
55950


The time now is Jun 19, 2019 06:25

Search for a textSearch for a text   

A general guide for using the Forum with some rules and tips
Mineral identification
  
  Index -> FOR BEGINNERS: What is it? Where is it from?
Like
8


View previous topic :: View next topic  
Author Message

indigo08




Joined: 09 Oct 2018
Posts: 1
Location: Brussels

View user's profile

Send private message

PostPosted: Oct 09, 2018 05:48    Post subject: Mineral identification  

Hello,

Having found this beautiful sample on a flea market without a name or deposit (as is often the case), would there be someone who could give me more information?

The inside of the crystal is translucent azure blue and the outside is greenish to dull blue.

In the geode there are quartz crystals.

Thank you.



20181009_114908.jpg
 Description:
 Viewed:  1559 Time(s)

20181009_114908.jpg



20181009_114845.jpg
 Dimensions: 5x5,5 cm
 Description:
 Viewed:  1564 Time(s)

20181009_114845.jpg


Back to top
Reply to topic Reply with quote
Like
   

Bob Harman




Joined: 06 Nov 2015
Posts: 544
Location: Indiana


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Oct 09, 2018 07:03    Post subject: Re: Mineral identification  

WELCOME INDIGO 08,

I have never seen anything quite like that. Of course it would be nice knowing exactly where the specimen was found. Anyway, I would not be at all surprised to find that it is not all natural. Just maybe the blue color was added???

First I would wash the rock or soak it for an hour or so to see if the blue color washes off. I might very briefly (5 seconds at most) soak with vinegar or acetone (polish remover), then rinse, also to see if the blue color washes off or is real.

If the blue color seems real after the above, it might be a copper mineral, but I have my doubts. You would have to do some further testing like hardness, streak etc, as described in the identification section of the website. At this point I just don't know BOB
Back to top
Reply to topic Reply with quote
Like
   

Susan Robinson




Joined: 05 Aug 2010
Posts: 154
Location: Hancock, MI

View user's profile

Send private message

PostPosted: Oct 09, 2018 07:12    Post subject: Re: Mineral identification  

It looks to me like an artificiallly grown chalcanthite crystal. Its surface, over time, is changing due to the environment it which is has been stored.
_________________
Susan Robinson
Back to top
Reply to topic Reply with quote
Like
6
   

John Betts




Joined: 07 Jun 2012
Posts: 144
Location: New York City

View user's profile

Send private message

PostPosted: Oct 09, 2018 07:18    Post subject: Re: Mineral identification  

Susan Robinson wrote:
It looks to me like an artificiallly grown chalcanthite crystal. Its surface, over time, is changing due to the environment it which is has been stored.


I agree with Susan. When I saw the photos I recognized it as familiar but couldn't place it. She got it.

_________________
John Betts
Back to top
Reply to topic Reply with quote
Like
1
   

Joseph DOliveira




Joined: 29 Jan 2012
Posts: 206
Location: Hanmer, Ontario


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Oct 09, 2018 09:24    Post subject: Re: Mineral identification  

I think you're spot on Susan, it was the first thing that came to mind when I saw the pictures.
_________________
Joseph D'Oliveira
Hanmer, Ontario
Canada
Back to top
Reply to topic Reply with quote
Like
1
   

lluis




Joined: 17 Nov 2006
Posts: 618

View user's profile

Send private message

PostPosted: Oct 09, 2018 11:19    Post subject: Re: Mineral identification  

Hi, all

I agree that it looks as man-made.
But I have grown chalcantite crystals and as far as I remember that have not this shape...
Simply, they are slender and with many biselated faces in what we could call prism faces,.
Nor or them are here...
So, I doubt chalcantite,
I agree in man-made (and if colored, so many possibilities... :-( )
With best wishes

Lluís
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 2006-2019


Powered by FMF