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 Aug-09:45:51 Re: posters (Tobi)
21 Aug-07:40:03 Re: posters (Raystraw)
21 Aug-06:45:12 Re: east coast mineral and fossil show 2019 (Vic Rzonca)
21 Aug-06:32:54 Re: east coast mineral and fossil show 2019 (Vic Rzonca)
21 Aug-01:44:10 Re: posters (Tobi)
21 Aug-01:36:22 Re: the mizunaka collection (Tobi)
20 Aug-23:43:16 The mizunaka collection - zoisite (Am Mizunaka)
20 Aug-14:32:05 Re: posters (Raystraw)
20 Aug-12:26:51 Re: collection of firmo espinar (Firmo Espinar)
20 Aug-12:16:31 Re: posters (Tobi)
20 Aug-11:57:17 Re: east coast mineral and fossil show 2019 (Tony L. Potucek)
20 Aug-11:45:36 Re: need help to confirm the composition of some specimens (Dany Mabillard)
20 Aug-10:40:00 Re: east coast mineral and fossil show 2019 (John S. White)
20 Aug-09:52:58 Re: posters (Raystraw)
20 Aug-09:27:14 Re: east coast mineral and fossil show 2019 (Bob Harman)
20 Aug-07:12:21 Re: posters (Tobi)
20 Aug-06:53:45 Posters (Raystraw)
20 Aug-05:58:11 Re: east coast mineral and fossil show 2019 (Vic Rzonca)
20 Aug-05:42:53 Re: east coast mineral and fossil show 2019 (John S. White)
20 Aug-02:42:58 Re: need help to confirm the composition of some specimens (Tobi)
20 Aug-02:33:19 Re: east coast mineral and fossil show 2019 (Tobi)
19 Aug-14:01:15 Re: east coast mineral and fossil show 2019 (Vic Rzonca)
19 Aug-02:10:14 Re: what have i found? (Steveb)
18 Aug-18:58:52 Re: what have i found? (Navieko)
18 Aug-14:48:40 Re: what have i found? (Steveb)

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
57567


The time now is Aug 21, 2019 12:50

Search for a textSearch for a text   

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


View previous topic :: View next topic  
Author Message

Blackbeard700




Joined: 21 Jul 2019
Posts: 5

View user's profile

Send private message

PostPosted: Jul 22, 2019 03:28    Post subject: Need help with identification  

Hi experts.
My son purchased this rock. The salesman said that it was a meteorite. But we are not sure. Can some help us identify it please?

Thanks



20190722_092410.jpg
 Description:
 Viewed:  582 Time(s)

20190722_092410.jpg


Back to top
Reply to topic Reply with quote
Like
   

Blackbeard700




Joined: 21 Jul 2019
Posts: 5

View user's profile

Send private message

PostPosted: Jul 22, 2019 03:32    Post subject: Re: Need help with identification  

Here is another picture


20190722_092357.jpg
 Description:
 Viewed:  576 Time(s)

20190722_092357.jpg


Back to top
Reply to topic Reply with quote
Like
   

Blackbeard700




Joined: 21 Jul 2019
Posts: 5

View user's profile

Send private message

PostPosted: Jul 22, 2019 03:33    Post subject: Re: Need help with identification  

And one last one.


20190722_092403.jpg
 Description:
 Viewed:  573 Time(s)

20190722_092403.jpg


Back to top
Reply to topic Reply with quote
Like
   

Blackbeard700




Joined: 21 Jul 2019
Posts: 5

View user's profile

Send private message

PostPosted: Jul 22, 2019 04:35    Post subject: Re: Need help with identification  

Adding more information. He purchased it from Marrakech in morocco. It does not appear to be magnetic... It is pretty hard and heavy.
Back to top
Reply to topic Reply with quote
Like
   

Bob Harman




Joined: 06 Nov 2015
Posts: 571
Location: Indiana


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jul 22, 2019 04:35    Post subject: Re: Need help with identification  

The example is absolutely NOT a meteorite! The example looks like botryoidal hematite, sometimes called kidney ore. BOB
Back to top
Reply to topic Reply with quote
Like
   

Blackbeard700




Joined: 21 Jul 2019
Posts: 5

View user's profile

Send private message

PostPosted: Jul 22, 2019 05:44    Post subject: Re: Need help with identification  

Thanks for the info.
Back to top
Reply to topic Reply with quote
Like
   

alfredo
Site Admin



Joined: 30 Jan 2008
Posts: 747


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jul 22, 2019 06:28    Post subject: Re: Need help with identification  

I agree with Bob. Definitely not a meteorite, and probably mammilary hematite. The only other mineral that can look like that is the "wood tin" variety of cassiterite, but that‘s a lot more rare.
Back to top
Reply to topic Reply with quote
Like
   

Stefan Koch




Joined: 15 Nov 2011
Posts: 8

View user's profile

Send private message

PostPosted: Jul 22, 2019 07:46    Post subject: Re: Need help with identification  

I would go for goethite instead of hematite due to the brown Color.
A simple streak test would help to confirm brown=most likely goethite vs. Red= hematite.
Back to top
Reply to topic Reply with quote
Like
   

Bob Carnein




Joined: 22 Aug 2013
Posts: 151
Location: Florissant, CO


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jul 22, 2019 08:58    Post subject: Re: Need help with identification  

I'm with Stefan--it looks like goethite to me. Try scraping it on the ring on the bottom of a teacup or the back of a porcelain tile. If the mark (streak) is yellowish brown, it's goethite; if reddish brown, it's hematite.
Back to top
Reply to topic Reply with quote
Like
   

Kevin Schofield




Joined: 05 Jan 2018
Posts: 98
Location: Beacon NY

View user's profile

Send private message

PostPosted: Jul 22, 2019 11:40    Post subject: Re: Need help with identification  

Hi Blackbeard,

I agree with the analysis goethite/hemAtite streak test that Bob C suggests. Both minerals are iron oxides, and both occur in Morocco, so your son has, if nothing else, got something for his mineral collection that does indeed come from the country he bought it, so it's a good souvenir ;-)

Kevin

_________________
Veni, Vidi, Emi
Back to top
Reply to topic Reply with quote
Like
   

alfredo
Site Admin



Joined: 30 Jan 2008
Posts: 747


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jul 23, 2019 03:56    Post subject: Re: Need help with identification  

Right, I should have written goethite rather than hematite, or better yet "iron oxides", because color and streak give good guidance but are not really definitive. More than once I‘ve been pretty sure I had goethite based on streak color, but X-ray showed dominantly hematite.
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