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
28 May-16:54:20 Re: a mineralogical trip through the regions of the uk - england / cumbria (Jordi Fabre)
28 May-16:20:45 Re: a mineralogical trip through the regions of the uk - england / cumbria (Colin Robinson)
28 May-14:29:16 Re: collection of tobi (Pierre Joubert)
28 May-14:20:11 Re: cornish chalcocite but from where? (Gneissware)
28 May-13:16:23 Re: a mineralogical trip through the regions of the uk - england / cumbria (Jordi Fabre)
28 May-10:28:46 Re: twenty basic minerals (Gneissware)
28 May-10:09:14 Re: collection of tobi (Gneissware)
28 May-07:56:16 Re: twenty basic minerals (Bob Harman)
28 May-07:50:32 Re: twenty basic minerals (Peter Lemkin)
28 May-07:35:44 Twenty basic minerals (Tom Mazanec)
28 May-07:28:25 Re: collection of tobi (Tobi)
28 May-07:25:44 Re: cornish chalcocite but from where? (Tobi)
28 May-07:14:15 Re: calcite location (Tobi)
28 May-06:58:47 Re: calcite location (Vitomorim)
28 May-06:23:13 Re: cornish chalcocite but from where? (Jfc035)
28 May-06:20:32 Cornish chalcocite but from where? (Jfc035)
28 May-01:15:15 Re: collection of tobi (Philippe Durand)
28 May-00:46:50 Re: collection of tobi (Heimo Hellwig)
27 May-21:22:15 Re: calcite location (Joseph D'oliveira)
27 May-19:11:18 Re: calcite location (Pete Richards)
27 May-19:04:26 Re: calcite location (Montanpark)
27 May-19:03:06 Re: calcite location (Montanpark)
27 May-19:02:00 Re: calcite location (Jim Robison)
27 May-19:01:31 Re: calcite location (Montanpark)
27 May-18:47:09 Re: a mineralogical trip through the states of usa - west virginia (Rweaver)

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
28177


The time now is May 28, 2017 17:22

Search for a textSearch for a text   

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


View previous topic :: View next topic  
Author Message

Greg1959




Joined: 22 Jan 2017
Posts: 3
Location: Louisiana

View user's profile

Send private message

PostPosted: Jan 22, 2017 21:22    Post subject: Help in identification  

I am new to this. Looks like a quartz cluster? Possibly hematite creating the color?


IMG_0937.JPG
 Mineral: Quartz?
 Description:
unknown
7cm x 5cm
 Viewed:  634 Time(s)

IMG_0937.JPG


Back to top
Reply to topic Reply with quote
Like
   

Pete Richards
Site Admin



Joined: 29 Dec 2008
Posts: 539
Location: Northeast Ohio


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 22, 2017 21:35    Post subject: Re: Help in identification  

Yes, this is quartz. And the color is due to iron oxides, possibly hematite but could be an ambiguous mixture of iron oxide minerals. If you look carefully, I think you can see that the color zone is somewhat inside the current crystal surfaces - it formed on an earlier crystal surface and then was enclosed by further crystal growth.

If you're new to this, you have a good eye, and/or you bring some other prior experience to your identification. Well done!

_________________
Collecting and studying crystals with interesting habits, twinning, and epitaxy
Back to top
Reply to topic Reply with quote
Like
   

Greg1959




Joined: 22 Jan 2017
Posts: 3
Location: Louisiana

View user's profile

Send private message

PostPosted: Jan 22, 2017 21:38    Post subject: Re: Help in identification  

New. I spent sometime going thru previous identification requests.

Thank you for responding so quickly.
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 2006-2017


Powered by FMF