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Can anyone please shed some light on this mineral??

Forums: Geology, Rock, Mineral
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TheRafe
 
Reply Fri 16 Sep, 2016 03:10 pm
I received this rather beatiful rock from my mother after she returned from a trip to North Africa, and I am wondering if any knows what it exactly is? I tried to do some research on my own, but it's rather difficult for a layman like me to come up with a reliable identification of the type of mineral. Below are some pictures. Any help would be very much appreciated! Thanks!

http://i.imgur.com/97NeYjJ.jpg
http://i.imgur.com/QuUujWv.jpg?1
http://i.imgur.com/3CM0h3q.jpg?1
http://i.imgur.com/3CM0h3q.jpg?1

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Type: Question • Score: 4 • Views: 1,725 • Replies: 15
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dalehileman
 
  2  
Reply Fri 16 Sep, 2016 03:29 pm
@TheRafe,
Rafe, obsidian flies to mind but it's only a guess

....'cuz the bottom two are surely quartz. Just hang in there as we have some guys really good at this sort of stuff
0 Replies
 
rosborne979
 
  2  
Reply Fri 16 Sep, 2016 03:40 pm
@TheRafe,
I was thinking pyrite and quartz, but I'm unsure.
0 Replies
 
cicerone imposter
 
  2  
Reply Fri 16 Sep, 2016 03:49 pm
@TheRafe,
Some of it looks like magnetite.
dalehileman
 
  2  
Reply Fri 16 Sep, 2016 03:51 pm
@cicerone imposter,
Yeah Rafe, take a mag to it
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TheRafe
 
  1  
Reply Fri 16 Sep, 2016 04:19 pm
Hi guys, thanks a lot for the replies! Maybe I should mention that the pictures all show the same rock. It is one rock; I would say the size of two fists...

I did the magnetism test by the way. Came out negative. It doesn't attract the magnet...
0 Replies
 
ossobucotemp
 
  2  
Reply Fri 16 Sep, 2016 04:58 pm
Farmerman (geologist) is likely to show up, but he's a busy guy, so patience is a virtue.
AC14747
 
  1  
Reply Fri 16 Sep, 2016 04:59 pm
Do you know what part of Africa it originated from?
TheRafe
 
  1  
Reply Fri 16 Sep, 2016 05:06 pm
@AC14747,
The Southern part of Morocco
0 Replies
 
TheRafe
 
  1  
Reply Fri 16 Sep, 2016 05:08 pm
@ossobucotemp,
I read some posts of his. Seems like a very knowledgeable geologist!
ossobucotemp
 
  2  
Reply Fri 16 Sep, 2016 05:14 pm
@TheRafe,
He is. Might be traveling or just back and taking care of stuff - he actually does farm as well.
0 Replies
 
cicerone imposter
 
  2  
Reply Fri 16 Sep, 2016 05:14 pm
@ossobucotemp,
farmerman also teaches grad level Geology.
0 Replies
 
AC14747
 
  1  
Reply Fri 16 Sep, 2016 05:14 pm
Titanite on Rutile after Ilmenite and with Microcline most likely.
TheRafe
 
  2  
Reply Fri 16 Sep, 2016 05:34 pm
@AC14747,
Rutile does look very similar:

http://www.dakotamatrix.com/products/16494/rutile
AC14747
 
  1  
Reply Fri 16 Sep, 2016 06:01 pm
@TheRafe,
Titanite is probably the yellowish green Hue in your specimen
0 Replies
 
TheRafe
 
  1  
Reply Fri 16 Sep, 2016 07:41 pm
Additional photo (same specimen):

http://i.imgur.com/AIdTTRb.jpg?1
0 Replies
 
 

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