JOGS International Gem Show April 7-18 Tucson Expo Center
Welcome to the GemologyOnline.com Forum
A non-profit Forum for the exchange of gemological ideas
It is currently Wed Feb 24, 2021 10:11 pm

All times are UTC - 4 hours




Post new topic Reply to topic  [ 9 posts ] 
Author Message
 Post subject: Curious
PostPosted: Sat Oct 31, 2020 5:23 am 
Offline
New to the Forum or The Quiet Type

Joined: Tue Oct 27, 2020 5:09 am
Posts: 2
Attachment:
16041358115077837783939058331711.jpg
16041358115077837783939058331711.jpg [ 2.72 MiB | Viewed 521 times ]


Can anyone tell me what this is?


Attachments:
16041360317265063982649667947238.jpg
16041360317265063982649667947238.jpg [ 2.61 MiB | Viewed 521 times ]
Top
 Profile  
Reply with quote  
 Post subject: Re: Curious
PostPosted: Mon Nov 02, 2020 12:55 pm 
Offline
Site Admin
User avatar

Joined: Sun Oct 16, 2005 12:22 pm
Posts: 20623
Location: San Francisco
I've moved this thread to a more appropriate section. It is not a Forum Disclaimer. cough cough.


Top
 Profile  
Reply with quote  
 Post subject: Re: Curious
PostPosted: Mon Nov 02, 2020 1:04 pm 
Offline
Gemology Online Veteran

Joined: Mon May 26, 2014 9:42 pm
Posts: 926
Hard to tell from the picture. It does look like a hunk of iron stained quartz a little bit.


Top
 Profile  
Reply with quote  
 Post subject: Re: Curious
PostPosted: Mon Nov 02, 2020 1:14 pm 
Offline
Moderator
User avatar

Joined: Mon Apr 02, 2012 9:31 pm
Posts: 3702
Location: North Carolina
It looks a bit like a piece of granite (or rather a granitoid of some sort) or maybe gneiss. Some feldspar and some biotite. But that's just an at-a-glance impression. What about it made it stand out to you to want ID?

_________________
https://www.etsy.com/shop/angryturtle


Top
 Profile  
Reply with quote  
 Post subject: Re: Curious
PostPosted: Mon Nov 02, 2020 1:45 pm 
Offline
Gemology Online Veteran
User avatar

Joined: Tue Apr 05, 2016 7:58 pm
Posts: 561
Location: San Marcos, CA
Do you have any info about it? Where it was found, how you came in possession of it? Anything?

_________________
The Gem Garden
San Marcos, CA


Top
 Profile  
Reply with quote  
 Post subject: Re: Curious
PostPosted: Mon Nov 02, 2020 1:59 pm 
Offline
Gold Member

Joined: Thu May 12, 2016 2:18 am
Posts: 1096
With rocks like this is you are not sure what it is, just take it for Granite. :lol:


Top
 Profile  
Reply with quote  
 Post subject: Re: Curious
PostPosted: Mon Nov 02, 2020 2:12 pm 
Offline
Site Admin
User avatar

Joined: Sun Oct 16, 2005 12:22 pm
Posts: 20623
Location: San Francisco
:smt105 You're killing me here Steve.


Top
 Profile  
Reply with quote  
 Post subject: Re: Curious
PostPosted: Mon Nov 02, 2020 3:37 pm 
Offline
New to the Forum or The Quiet Type

Joined: Tue Oct 27, 2020 5:09 am
Posts: 2
What stood out to me the most was how red it is all the way through but it's hard to capture that in a photo. The white vein that's going down the middle almost has a pearl essence to it. I found it in the Coeur d' Alene river in north Idaho. Here is a couple more photos. It really is beautiful.


Attachments:
20201102_105354.jpg
20201102_105354.jpg [ 2.47 MiB | Viewed 499 times ]
20201102_105600.jpg
20201102_105600.jpg [ 2.45 MiB | Viewed 499 times ]
20201102_085123.jpg
20201102_085123.jpg [ 2.35 MiB | Viewed 499 times ]
Top
 Profile  
Reply with quote  
 Post subject: Re: Curious
PostPosted: Mon Nov 02, 2020 6:59 pm 
Offline
Valued Contributor

Joined: Fri Jun 25, 2010 12:04 am
Posts: 199
Location: Idaho
That area is known for lots of regional metamorphism - the Idaho Emerald Creek star garnet area is to the south a ways, but still the same rock groups. Also some small granite bodies and a few pegmatites.

Knowing that, if it isn't just iron-stained mineral grains (lots of that in the region, esp. the Coeur 'd Alene mining district to the east on the south fork of the river) there is a decent chance there are bands of small garnet grains in the rock. Not really of gem value, but interesting to the one who found it...

Spent a summer in the Coeur 'd Alene district as a geological assistant (aka pack mule) on a USGS project and found lots of interesting stuff, though the best was usually in a hole a few hundred feet under ground.

_________________
Lapidarist by Passion
Goldsmith by Necessity

Facetron x2
GemCad/GemRay/Gem Cut Studio
Matrix 9/Rhino 5, 6, 7 Beta
REVO A (still hanging on...)
B9 Creator Core 5 Series XL
Indutherm MC-15


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 9 posts ] 

All times are UTC - 4 hours


Who is online

Users browsing this forum: No registered users and 1 guest


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 post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
Gemology Style ported to phpBB3 by Christian Bullock