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


Spanish message board






Newest topics and users posts
27 Sep-21:55:20 Re: quartz and epidote with possible hedenbergite from imilchil, morocco (Adam)
27 Sep-15:47:26 Re: collection of michael shaw (Michael Shaw)
27 Sep-14:10:56 Re: collection of fiebre verde (Philippe Durand)
27 Sep-11:17:39 Re: question about an old specimen (Alfredo)
27 Sep-10:27:55 Re: question about an old specimen (Jordi Fabre)
27 Sep-09:39:10 Re: question about an old specimen (Bob Carnein)
27 Sep-09:08:44 Re: question about an old specimen (Pete Richards)
27 Sep-07:50:03 Re: collection of gerhard brandstetter (Gerhard Brandstetter)
27 Sep-02:30:39 Re: question about an old specimen (Gerhard Brandstetter)
26 Sep-22:49:34 Re: question about an old specimen (Volkmar Stingl)
26 Sep-22:35:25 Re: question about an old specimen (Brent Lockhart)
26 Sep-21:38:44 Re: question about an old specimen (Roger Warin)
26 Sep-16:54:39 Question about an old specimen (Bob Carnein)
25 Sep-16:50:53 Re: kamar safed emerald mine in panjshir, afghanistan (Fiebre Verde)
25 Sep-15:05:55 Re: kamar safed emerald mine in panjshir, afghanistan (Josele)
25 Sep-12:28:55 Re: kamar safed emerald mine in panjshir, afghanistan (Fiebre Verde)
25 Sep-09:19:56 Re: will barite save the world? (John Hodgson)
25 Sep-05:41:59 Re: kamar safed emerald mine in panjshir, afghanistan (Josele)
25 Sep-05:08:28 Kamar safed emerald mine in panjshir, afghanistan (Josele)
25 Sep-02:13:49 Re: quartz and epidote with possible hedenbergite from imilchil, morocco (Jordi Fabre)
24 Sep-14:45:17 Re: collection of fiebre verde (panjshir #42) (Fiebre Verde)
24 Sep-12:13:18 Re: will barite save the world? (James Catmur)
24 Sep-12:02:31 Re: quartz and epidote with possible hedenbergite from imilchil, morocco (Adam)
24 Sep-12:01:39 Re: quartz and epidote with possible hedenbergite from imilchil, morocco (Adam)
24 Sep-10:26:29 Re: will barite save the world? (Lluis)

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
84968


The time now is Sep 27, 2021 23:24

Search for a textSearch for a text   

A general guide for using the Forum with some rules and tips
The information provided within this Forum about localities is only given to allow reference to them. Any visit to any of the localities requires you to obtain full permission and relevant information prior to your visit. FMF is strictly against any illicit activities related to collecting minerals.
Crystal Habit of this Pyrite Mineral
  
  Index -> FOR BEGINNERS: What is it? Where is it from?
Like
2


View previous topic :: View next topic  
Author Message

Stone Mania




Joined: 06 Oct 2016
Posts: 41
Location: London

View user's profile

Send private message

PostPosted: Aug 05, 2021 11:57    Post subject: Crystal Habit of this Pyrite Mineral  

What crystal habit does this piece of pyrite have? Would it be described as massive? Anything else you can tell me about his piece would be greatly appreciated.


Many thanks,

Laurence



pyrite-mineral-freestanding.jpg
 Mineral: Pyrite
 Description:
 Viewed:  715 Time(s)

pyrite-mineral-freestanding.jpg



pyrite-mineral-1aq.jpg
 Description:
 Viewed:  712 Time(s)

pyrite-mineral-1aq.jpg


Back to top
Reply to topic Reply with quote
Like
1
   

Carles Millan
Site Admin



Joined: 05 May 2007
Posts: 1354
Location: Catalonia


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Aug 05, 2021 12:06    Post subject: Re: Crystal Habit of this Pyrite Mineral  

Stone Mania wrote:
What crystal habit does this piece of pyrite have? Would it be described as massive? Anything else you can tell me about his piece would be greatly appreciated.
Many thanks,
Laurence

This specimen is crystallized, but it doesn't show any face. So your question has no answer. For the crystals to show faces there must be some free space at the moment of growing, such as a vug or alike. But this is not the case.
Back to top
Reply to topic Reply with quote
Like
   

alfredo
Site Admin



Joined: 30 Jan 2008
Posts: 867


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Aug 05, 2021 12:25    Post subject: Re: Crystal Habit of this Pyrite Mineral  

Also, check it with a magnet to see whether it's really pyrite, or might be pyrrhotite.
Back to top
Reply to topic Reply with quote
Like
   

Pete Modreski
Site Admin



Joined: 30 Jul 2007
Posts: 698
Location: Denver, Colorado


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Aug 05, 2021 12:34    Post subject: Re: Crystal Habit of this Pyrite Mineral  

Yes, definitely, we'd just call it "massive".

Looks like it's criss-crossed by veins & patches of some other, dark mineral, probably some other sulfide. Could be any of a great number of things--galena, black sphalerite, bornite, molybdenite, chalcocite... and probably no easy way to tell what that might be, unless you can tell that it has good cleavage (galena or sphalerite), is very soft (molybdenite), etc.
Back to top
Reply to topic Reply with quote
Like
1
   

Stone Mania




Joined: 06 Oct 2016
Posts: 41
Location: London

View user's profile

Send private message

PostPosted: Aug 05, 2021 12:38    Post subject: Re: Crystal Habit of this Pyrite Mineral  

Thanks guys for your replies. Checked it with a magnet and can feel no magnetism at all.
Back to top
Reply to topic Reply with quote
Like
   

alfredo
Site Admin



Joined: 30 Jan 2008
Posts: 867


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Aug 05, 2021 12:41    Post subject: Re: Crystal Habit of this Pyrite Mineral  

In that case no pyrrhotite, and probably indeed pyrite as you thought, and perhaps also including other sulphides as Pete said.
Back to top
Reply to topic Reply with quote
Like
   

Stone Mania




Joined: 06 Oct 2016
Posts: 41
Location: London

View user's profile

Send private message

PostPosted: Aug 05, 2021 12:43    Post subject: Re: Crystal Habit of this Pyrite Mineral  

Thanks Pete, it's definitely criss-crossed by veins of a dark mineral. Difficult to see any obvious cleavage. When I bought it I was told it was pyrite and the guy I buy from knows his stuff but I can't remember everything he told me about it. It's been locked away for some time and has only just come out to be photographed and added to my website.

Thanks again for the info, greatly appreciated.
Back to top
Reply to topic Reply with quote
Like
   

Stone Mania




Joined: 06 Oct 2016
Posts: 41
Location: London

View user's profile

Send private message

PostPosted: Aug 05, 2021 12:43    Post subject: Re: Crystal Habit of this Pyrite Mineral  

Thanks Alfredo, appreciate the info.
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 2006-2021


Powered by FMF