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 Jun-17:08:21 The mizunaka collection - quartz (Am Mizunaka)
28 Jun-16:08:12 Re: the mizunaka collection (Am Mizunaka)
28 Jun-11:27:18 Re: erionite and cancer (Alfredo)
28 Jun-11:13:29 Re: erionite and cancer (Riccardo Modanesi)
28 Jun-11:12:39 Re: collection of michael shaw (Crosstimber)
28 Jun-09:15:32 Re: a mineralogical trip through the states of usa - ohio (Jamison Brizendine)
28 Jun-08:47:55 Re: sainte marie-aux-mines show 2017 (Roger Warin)
28 Jun-07:39:36 Re: erionite and cancer (Peter Lemkin)
28 Jun-07:10:52 Re: the mizunaka collection (Jamison Brizendine)
28 Jun-05:44:15 Re: erionite and cancer (Bob Harman)
28 Jun-05:14:58 Erionite and cancer (James)
28 Jun-03:37:34 Re: sainte marie-aux-mines show 2017 (Roger Warin)
27 Jun-22:03:33 Re: the mizunaka collection - quartz (Am Mizunaka)
27 Jun-16:58:59 Re: franjungle collection (Franjungle)
27 Jun-16:25:56 Re: genuine aventurine? (Evin Likes Rocks)
27 Jun-14:16:28 Re: sainte marie-aux-mines show 2017 (Philippe Durand)
27 Jun-12:54:20 Sainte marie-aux-mines show 2017 - local newspapers (Jordi Fabre)
27 Jun-12:36:22 Re: sainte marie-aux-mines show 2017 (Jordi Fabre)
27 Jun-12:22:09 Re: sainte marie-aux-mines show 2017 (James)
27 Jun-11:44:00 Re: sainte marie-aux-mines show 2017 (Bob Harman)
27 Jun-11:21:55 Re: sainte marie-aux-mines show 2017 (Philippe Durand)
27 Jun-11:05:55 Re: collection of fiebre verde - la pita (#658) (Fiebre Verde)
27 Jun-10:28:32 Re: the mizunaka collection - quartz (Tobi)
27 Jun-09:54:27 Re: witherite xls from ky (Bob Carnein)
27 Jun-07:41:26 Fosminer 2017 - 40th edition (Jordi Fabre)

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
29465


The time now is Jun 28, 2017 21:14

Search for a textSearch for a text   

A general guide for using the Forum with some rules and tips
Cherry Quartz with trapped gold nugget ? What do I have ?
  
  Index -> What is it? - Where is it from?
Like


View previous topic :: View next topic  
Author Message

zharsanyi72




Joined: 16 Nov 2014
Posts: 14

View user's profile

Send private message

PostPosted: Jan 29, 2017 08:44    Post subject: Cherry Quartz with trapped gold nugget ? What do I have ?  

Hi!
I think this is a large polished Cherry Quartz .And looks like there is gold nugget inside.
I would like to ask the experts to help me to identify this piece .
Thank you!

Height: 14.5" (37cm)
Weight: 5 lbs 2,6 oz (2341g)



014.JPG
 Mineral: Quartz
 Description:
Colorado
37 cm
Cherry Quartz
 Viewed:  2008 Time(s)

014.JPG



014.JPG
 Description:
 Viewed:  2003 Time(s)

014.JPG



003.JPG
 Description:
 Viewed:  1999 Time(s)

003.JPG



004.JPG
 Description:
 Viewed:  2005 Time(s)

004.JPG



005.JPG
 Description:
 Viewed:  2002 Time(s)

005.JPG



006.JPG
 Description:
 Viewed:  1995 Time(s)

006.JPG



008.JPG
 Description:
 Viewed:  2002 Time(s)

008.JPG



012.JPG
 Description:
 Viewed:  1989 Time(s)

012.JPG



031.JPG
 Description:
 Viewed:  1999 Time(s)

031.JPG



026.JPG
 Description:
 Viewed:  1992 Time(s)

026.JPG



024.JPG
 Description:
 Viewed:  1992 Time(s)

024.JPG



021.JPG
 Description:
 Viewed:  1992 Time(s)

021.JPG



020.JPG
 Description:
 Viewed:  1991 Time(s)

020.JPG


Back to top
Reply to topic Reply with quote
Like
   

Bob Harman




Joined: 06 Nov 2015
Posts: 210
Location: Indiana


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 29, 2017 09:22    Post subject: Re: Cherry Quartz with trapped gold nugget ? What do I have ?  

First of all, you need to know whether the "quartz" itself is natural or man created. If it is basically natural and just has been polished, you need to know exactly where it was from. That will give us a clue us as to whether there is even gold in that location.

Having said that, if natural, and from a gold bearing location, I doubt anyone will make a determination that you have a gold nugget in your specimen just from the pictures alone.

IMHO you have a polished quartz decoration with multiple inclusions including a gold COLORED inclusion. Whether it is really "gold" cannot be told from the pictures alone. BOB
Back to top
Reply to topic Reply with quote
Like
   

zharsanyi72




Joined: 16 Nov 2014
Posts: 14

View user's profile

Send private message

PostPosted: Jan 29, 2017 09:48    Post subject: Re: Cherry Quartz with trapped gold nugget ? What do I have ?  

Bob Harman wrote:
First of all, you need to know whether the "quartz" itself is natural or man created. If it is basically natural and just has been polished, you need to know exactly where it was from. That will give us a clue us as to whether there is even gold in that location.

Having said that, if natural, and from a gold bearing location, I doubt anyone will make a determination that you have a gold nugget in your specimen just from the pictures alone.

IMHO you have a polished quartz decoration with multiple inclusions including a gold COLORED inclusion. Whether it is really "gold" cannot be told from the pictures alone. BOB


Thank you the answer.
Unfortunately I do not know the place of origin.
Back to top
Reply to topic Reply with quote
Like
   

James
Site Admin



Joined: 14 Sep 2006
Posts: 479
Location: Cambridge


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 29, 2017 09:51    Post subject: Re: Cherry Quartz with trapped gold nugget ? What do I have ?  

Trapped water plus air bubble, IMHO
Back to top
Reply to topic Reply with quote
Like
   

marco campos-venuti




Joined: 09 Apr 2014
Posts: 145
Location: Sevilla


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 29, 2017 09:54    Post subject: Re: Cherry Quartz with trapped gold nugget ? What do I have ?  

As Bob diplomatically suggests, it is a man made quartz, lab grown in China.
Back to top
Reply to topic Reply with quote
Like
   

zharsanyi72




Joined: 16 Nov 2014
Posts: 14

View user's profile

Send private message

PostPosted: Jan 29, 2017 09:56    Post subject: Re: Cherry Quartz with trapped gold nugget ? What do I have ?  

Bob Harman wrote:
First of all, you need to know whether the "quartz" itself is natural or man created. If it is basically natural and just has been polished, you need to know exactly where it was from. That will give us a clue us as to whether there is even gold in that location.

Having said that, if natural, and from a gold bearing location, I doubt anyone will make a determination that you have a gold nugget in your specimen just from the pictures alone.

IMHO you have a polished quartz decoration with multiple inclusions including a gold COLORED inclusion. Whether it is really "gold" cannot be told from the pictures alone. BOB


Thank you the clue "COLORED inclusion".
I'm 100% sure this is a yellow inclusion inside the quartz.I found so many examples.
Back to top
Reply to topic Reply with quote
Like
   

Pete Modreski
Site Admin



Joined: 30 Jul 2007
Posts: 581
Location: Denver, Colorado


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 29, 2017 12:13    Post subject: Re: Cherry Quartz with trapped gold nugget ? What do I have ?  

I don't know about this being synthetic quartz--I would think it's natural, with all these inclusions, but perhaps others do know more for certain.
A hollow, fluid (bubble) inclusion--which may be filled either with water, or with gas, it's hard to know--may have a reflective, slightly iridescent-appearing coating on its walls (perhaps of iron oxide), which may reflect light and give it that "golden"-appearing color. I think that's what you have here.
I do agree, that in those very close-up photos, it certainly does look like a gold nugget! But I think that's just an optical illusion.
Gold included in a quartz crystal--is just about unknown. In fact, maybe it is unknown--has anyone on the list, ever seen such a specimen! This tells us something, about the geologic conditions under which gold in massive quartz veins forms, vs. crystals of quartz growing into open spaces.
Back to top
Reply to topic Reply with quote
Like
   

alfredo
Site Admin



Joined: 30 Jan 2008
Posts: 612
Location: New York


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 30, 2017 00:00    Post subject: Re: Cherry Quartz with trapped gold nugget ? What do I have ?  

I agree with Pete that this is a natural quartz crystal (well, natural except for being polished). There is enough included quartz like this coming from Brazil that there is no need to go to the complicated trouble of trying to fabricate such a thing.

I also agree that the inclusion isn't gold. It could just be a hollow part (a "negative crystal"), which may or may not be coated inside with a thin film of yellowish limonite, and the apparent metallic glint is just an optical illusion created by the way the void transmits and refracts light.
Back to top
Reply to topic Reply with quote
Like
   

Peter Lemkin




Joined: 18 Nov 2016
Posts: 28
Location: Prague

View user's profile

Send private message

PostPosted: Jan 30, 2017 01:57    Post subject: Re: Cherry Quartz with trapped gold nugget ? What do I have ?  

I am looking at page 41 of Jaroslav Hyrsl and Gerhard Neidermayr's book 'Inclusions in Quartz' [the bible on this along with Guebelin's 1992 book]. I agree with others here that this is not likely an inclusion of gold for many reasons [and if it were, you'd have the second best specimen of gold in Quartz in the World - they are SO VERY rare!], In the book it mentions a 0.3mm gold in quartz from Sadisdorf, Germany; a very few from Bynbgi, Urals, Russia; and the best one ever found [photo in Guebelin]: 3mm XX of gold in quartz from Placerville, Colorado, USA. It mentions no others. So, it does exist, but is amazingly rare!....
Back to top
Reply to topic Reply with quote
Like
   

marco campos-venuti




Joined: 09 Apr 2014
Posts: 145
Location: Sevilla


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 30, 2017 02:22    Post subject: Re: Cherry Quartz with trapped gold nugget ? What do I have ?  

Sorry for insist, but the piece is 100% lab grown. Tucson this year is invaded by lab grown quartz of any colors. Also in beautiful druses and nice groups of crystals.
Back to top
Reply to topic Reply with quote
Like
   

Pierre Joubert




Joined: 09 Mar 2012
Posts: 1280
Location: Western Cape


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 30, 2017 03:09    Post subject: Re: Cherry Quartz with trapped gold nugget ? What do I have ?  

marco campos-venuti wrote:
Sorry for insist, but the piece is 100% lab grown. Tucson this year is invaded by lab grown quartz of any colors. Also in beautiful druses and nice groups of crystals.

The unnatural pink colour suggests to me that it is not natural. I am inclined to agree with you Marco but cannot help wondering how they managed the inclusions.

_________________
Pierre Joubert


'The tree of silence bears the fruit of peace. '
Back to top
Reply to topic Reply with quote
Like
   

Peter Lemkin




Joined: 18 Nov 2016
Posts: 28
Location: Prague

View user's profile

Send private message

PostPosted: Jan 30, 2017 03:27    Post subject: Re: Cherry Quartz with trapped gold nugget ? What do I have ?  

Pierre Joubert wrote:
marco campos-venuti wrote:
Sorry for insist, but the piece is 100% lab grown. Tucson this year is invaded by lab grown quartz of any colors. Also in beautiful druses and nice groups of crystals.

The unnatural pink colour suggests to me that it is not natural. I am inclined to agree with you Marco but cannot help wondering how they managed the inclusions.


As it is polished to accomplish the 'shape' of a quartz crystal, the inclusions would be rather easy for someone who works with glass. I have not, but had some friends who were glass artists and they could put all sorts of things into the glass to make for colored areas or bubbles/inclusions. Glass is usually just melted quartz sand with a few other chemicals such as soda ash and limestone, but can also be melted pure quartz too [though rarely done except for scientific purposes]. I'm also inclined to think this is not a natural quartz, less so one with a gold inclusion! As to what made this inclusion, one can't tell just from looking, but it could be anything with a gold color to gold leaf.
Back to top
Reply to topic Reply with quote
Like
   

Duncan Miller




Joined: 25 Apr 2009
Posts: 104
Location: Cape Town


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jan 30, 2017 07:07    Post subject: Re: Cherry Quartz with trapped gold nugget ? What do I have ?  

In some of the photographs there appear what seem to be lots of round bubbles, which are common in glass. Try scratching several polished faces with a known piece of quartz. Please do this and let us know the result.
Back to top
Reply to topic Reply with quote
Like
   

zharsanyi72




Joined: 16 Nov 2014
Posts: 14

View user's profile

Send private message

PostPosted: Jan 30, 2017 15:49    Post subject: Re: Cherry Quartz with trapped gold nugget ? What do I have ?  

Thank you all the answers.!
Back to top
Reply to topic Reply with quote
Like
   
Display posts from previous:   
   Index -> 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