CIBJO releases Gemmological Special Report: considers process of separating measurable facts from opinion; See Gemological Articles below.
Welcome to the GemologyOnline.com Forum
A non-profit Forum for the exchange of gemological ideas
It is currently Wed Nov 20, 2019 6:55 pm

All times are UTC - 4 hours




Post new topic Reply to topic  [ 7 posts ] 
Author Message
 Post subject: Fuchsite
PostPosted: Mon Apr 10, 2006 5:13 pm 
Offline
Gold Member
User avatar

Joined: Mon Oct 17, 2005 2:14 pm
Posts: 1185
Location: Ozark Mountains, Arkansas
Ok, now I'm really stumped. I got a piece of fuchsite from HOO a few weeks ago, and having never seen one before, I expected some shade of pink to arrive. But to my surprise they sent a lovely chunk of green material, so I shrugged my shoulders, labeled it and placed it in my specimen collection. Then yesterday I got to a town with a mineral shop, and they had fuchsite, and it was shades of pink, and looks nothing like what I got from HOO. So I called them today, and they assured me fuchsite is green due to chromium, but of course, so are rubies and alexandrites, so we have no answer here. Can any of you GURUS tell me what color fuchsite is supposed to be, and if different colors can be found in various locations? I'm confused! :?

_________________
Crystal :smt086

Quantum Mechanics...the dreams stuff is made of. :smt047


Top
 Profile  
Reply with quote  
 Post subject:
PostPosted: Mon Apr 10, 2006 5:50 pm 
Offline
Platinum Member
User avatar

Joined: Fri Feb 24, 2006 1:20 am
Posts: 2742
Location: Southern California, U.S.A.
CS, I only have a couple of minutes before the next scheduled crisis today. But I took a quick look at Arem's "Color Encyclopedia" and he writes of quartzite:

"A rock made up of tightly packed quartz grains, formed at high temperature and pressure, due to metamorphism. Sometimes it contains small crystals that reflect light, and this material is called aventurine. Usually the included crystals are a green, chrome-rich mica called fuchsite." Green wins.

That's all I can find in a quick look but I'm sure others will contribute more.

ROM


Top
 Profile  
Reply with quote  
 Post subject:
PostPosted: Mon Apr 10, 2006 6:16 pm 
Offline
Platinum Member

Joined: Tue Nov 29, 2005 2:02 pm
Posts: 2647
HI CS,

Fuchsite is the chromium rich variety of muscovite. It's definitely green. I believe there is a barium muscovite as well that is pinkish.
My Google isn't googling today for some reason or I'd post a link.
Try your search engine for barium muscovite.


Top
 Profile  
Reply with quote  
 Post subject:
PostPosted: Tue Apr 11, 2006 4:42 pm 
Offline
Gold Member
User avatar

Joined: Mon Oct 17, 2005 2:14 pm
Posts: 1185
Location: Ozark Mountains, Arkansas
Hey, thanks y'all! I googled both and got pics. Now I'm thinking the pink one I got locally is actually this:

Muscovite Aluminoceladonite
Comments: Large, 1cm, purple crystals of muscovite/leucophyllite, (var. alurgite which is an intermediate composition to muscovite and leucophyllite (aluminoceladonite).

There was a picture with this one that seems to look like it, so I'll have to get this info to the vendor so he can take a look, and correct his labels. Thanks so much!! :D

_________________
Crystal :smt086

Quantum Mechanics...the dreams stuff is made of. :smt047


Top
 Profile  
Reply with quote  
 Post subject: Mysterious pinkish Fuchsite
PostPosted: Wed Apr 12, 2006 9:58 am 
Offline
Gemology Online Veteran
User avatar

Joined: Thu Nov 24, 2005 6:14 pm
Posts: 640
Location: Hohe Tauern N.P., Austria
Hi There!

As posted already before: Fuchsite is green. We also find it in the same area as the emeralds (Both contain Chromium wich gives them the same pure green color) here.

Another tip for the mysterious pinkish "Fuchsite": Maybe this is another type of the mica family: the Lepidolite mica.

Google the pics of it and copare it to the specimen you have.

Greetings from Austria, Nikolaus


Top
 Profile  
Reply with quote  
 Post subject:
PostPosted: Sat Apr 22, 2006 7:53 am 
Offline
Established Member
User avatar

Joined: Sat Dec 24, 2005 6:03 pm
Posts: 34
Location: Holland
Hi,

Fuchsite is a Chromium containing variant of Muscovite (not a tue mineral species!), and it's indeed allways green! (also green muscovite with Vanadium is often called fuchsite).
Lepidolite is found in different shades of pink, but is actually a Biotite variant.
Another pink glimmer (Mica) species is the Chlorite series mineral Kammererite.

Cheers

Harjo


Top
 Profile  
Reply with quote  
 Post subject:
PostPosted: Thu Jan 11, 2007 9:30 pm 
I realize this is an old thread, but...

Fuchsite is green. Another *pink* mica, other than lepidolite, is Margarite.


Top
  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 7 posts ] 

All times are UTC - 4 hours


Who is online

Users browsing this forum: No registered users and 2 guests


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