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
10 Dec-19:01:18 Re: don lum collection (Don Lum)
10 Dec-14:51:04 Re: the mizunaka collection (Am Mizunaka)
10 Dec-14:38:39 Re: the collection of pierre and riana joubert (Pierre Joubert)
10 Dec-13:36:42 Re: the collection of pierre and riana joubert (Jordi Fabre)
10 Dec-13:28:57 Re: the collection of pierre and riana joubert (Pierre Joubert)
10 Dec-13:19:35 Re: the collection of pierre and riana joubert (Kevin Conroy)
10 Dec-13:04:49 Re: the collection of pierre and riana joubert (Pierre Joubert)
10 Dec-10:56:33 Re: don lum collection (Don Lum)
10 Dec-09:50:41 Re: collection of michael shaw (Crosstimber)
10 Dec-04:54:03 Re: franjungle collection (Franjungle)
10 Dec-02:54:30 Re: the mizunaka collection (Tobi)
10 Dec-02:37:33 Re: don lum collection (Tobi)
09 Dec-22:19:02 Re: don lum collection (Don Lum)
09 Dec-21:56:02 Re: don lum collection (Crosstimber)
09 Dec-21:51:06 Re: don lum collection (Don Lum)
09 Dec-17:34:46 Re: presentation of new members - gary white from texas (Don Lum)
09 Dec-14:08:20 The mizunaka collection - stibnite (Am Mizunaka)
09 Dec-13:34:01 Re: the intense oiling of chinese minerals (Gary White)
09 Dec-12:57:36 Re: favourite sphalerites? (Tobi)
09 Dec-11:39:01 Re: favourite sphalerites? (Mathias)
09 Dec-10:44:15 Re: the intense oiling of chinese minerals (Bob Harman)
09 Dec-09:31:52 Re: history of minerals. (Vic Rzonca)
09 Dec-08:11:22 Re: merry christmas 2018! (Bob Harman)
09 Dec-04:36:43 Re: merry christmas 2018! (Heimo Hellwig)
09 Dec-03:46:16 Re: merry christmas 2018! (Tobi)

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
48216


The time now is Dec 10, 2018 23:19

Search for a textSearch for a text   

A general guide for using the Forum with some rules and tips
Metal ore?
  
  Index -> FOR BEGINNERS: What is it? Where is it from?
Like
4


View previous topic :: View next topic  
Author Message

Kara




Joined: 22 Jul 2018
Posts: 120

View user's profile

Send private message

PostPosted: Aug 29, 2018 03:25    Post subject: Metal ore?  

Hello and sorry, me again. Found this rock yesterday, have never collected these rusty uglies but got interested because of the metallic stuff on top.

Very heavy, gives reddish brown streak to porcelain (some places give also dark grey streak), steel knife scratches through both the grey metallic mineral and the rusty looking host rock and both of them easily scratch copper coin. Not magnetic. I'll try to crack it to get a fresh surface view.

Could this be hematite or another iron ore? Thank You in advance! Kara



1.JPG
 Description:
dirty covered with clay
 Viewed:  921 Time(s)

1.JPG



1a.JPG
 Description:
soap washed
 Viewed:  920 Time(s)

1a.JPG



2.JPG
 Description:
 Viewed:  942 Time(s)

2.JPG



3.JPG
 Description:
 Viewed:  917 Time(s)

3.JPG



4.JPG
 Description:
 Viewed:  920 Time(s)

4.JPG



5.JPG
 Description:
 Viewed:  922 Time(s)

5.JPG


Back to top
Reply to topic Reply with quote
Like
   

Kara




Joined: 22 Jul 2018
Posts: 120

View user's profile

Send private message

PostPosted: Aug 29, 2018 10:02    Post subject: Re: Metal ore?  

I managed to crack a piece off, and it looks like an ordinary ugly rock with some iron to me. What do you think?


IMG_3404.JPG
 Description:
 Viewed:  824 Time(s)

IMG_3404.JPG



IMG_3409.JPG
 Description:
 Viewed:  821 Time(s)

IMG_3409.JPG


Back to top
Reply to topic Reply with quote
Like
   

Riccardo Modanesi




Joined: 07 Nov 2011
Posts: 511
Location: Milano

View user's profile

Send private message

PostPosted: Aug 29, 2018 10:13    Post subject: Re: Metal ore?  

Hi to everybody!
Personal opinion: hematite, together with other minerals (quartz, pyrite, chalcopyrite...).
This mineralogical association is very common in our Elba Island!
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
1
   

alfredo
Site Admin



Joined: 30 Jan 2008
Posts: 712


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Aug 29, 2018 10:33    Post subject: Re: Metal ore?  

I think almost certainly hematite.
Back to top
Reply to topic Reply with quote
Like
1
   

Peter Lemkin




Joined: 18 Nov 2016
Posts: 172
Location: Prague

View user's profile

Send private message

PostPosted: Aug 29, 2018 11:46    Post subject: Re: Metal ore?  

Hematite is Fe2O3 and quite common in many places. If you had found iron [Fe], that would be rare indeed!!!!!! [only a very few places on Earth have produced native Fe].....While there is a lot of iron within surface rocks, nearly all of it has been oxidized or chemically combined with other elements. If you have a really good magnifying glass, or better a stereoscopic microscope, you can examine a lot of the minerals you are finding better - and what is associated with them. The Russian stereoscopic mineralogical microscopes are not bad at all for the price and likely available online or at some place that sells to collectors. Just an idea if you are really interested in getting involved with minerals.

https://en.wikipedia.org/wiki/Hematite
Back to top
Reply to topic Reply with quote
Like
1
   

franjungle
Site Admin



Joined: 05 Apr 2017
Posts: 271
Location: Medellín, Colombia.


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Aug 29, 2018 17:17    Post subject: Re: Metal ore?  

Hi Kara,

I think we can also see massive pyrite like I add.



IMG_2718.JPG
 Mineral: Pyrite
 Locality:
Colombia
 Dimensions: 50mm x 90mm
 Description:
 Viewed:  705 Time(s)

IMG_2718.JPG


Back to top
Reply to topic Reply with quote
Like
1
   

Kara




Joined: 22 Jul 2018
Posts: 120

View user's profile

Send private message

PostPosted: Aug 30, 2018 00:28    Post subject: Re: Metal ore?  

How nice there is pyrite too, thank you Franjungle for the interesting picture. I have found only tiny scattered cubes before, had no idea they can be like this too.
Thank you all very much!



pyr.jpg
 Description:
 Viewed:  644 Time(s)

pyr.jpg



pyr2.jpg
 Description:
 Viewed:  643 Time(s)

pyr2.jpg


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 2006-2018


Powered by FMF