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


Spanish message board






Newest topics and users posts
12 Nov-16:23:19 Re: the mizunaka collection - rhodochrosite (Am Mizunaka)
12 Nov-01:08:39 Re: the mizunaka collection (Volkmar Stingl)
11 Nov-22:53:04 The mizunaka collection - quartz (Am Mizunaka)
09 Nov-11:33:47 Re: contribution dr. Menor-salván - volborthite and tangeite from milpillas (mexico) - (52 (Fmf Forum)
09 Nov-11:33:11 Contribution dr. Menor-salván - volborthite and tangeite from milpillas (mexico) - (52) (Fmf Forum)
09 Nov-09:41:30 Re: collection of michael shaw (Michael Shaw)
08 Nov-06:32:28 Re: don lum collection (Carles Millan)
08 Nov-03:35:38 Re: the mim museum in beirut, lebanon (Mim Museum)
07 Nov-23:49:49 The mizunaka collection - rhodochrosite (Am Mizunaka)
07 Nov-11:19:38 Re: collection of michael shaw (Michael Shaw)
07 Nov-11:17:19 Re: intermineral liège 2024 (Bob Carnein)
06 Nov-21:33:14 Re: intermineral liège 2024 (Matt_zukowski)
06 Nov-11:15:04 Re: where is this amethyst from? (Indigo08)
06 Nov-10:46:03 Re: where is this amethyst from? (Peter Megaw)
06 Nov-09:26:30 Re: where is this amethyst from? (Indigo08)
06 Nov-09:25:29 Re: intermineral liège 2024 (James Catmur)
06 Nov-00:02:50 Re: intermineral liège 2024 (Roger Warin)
05 Nov-17:13:28 Re: in memoriam - josé zendrera has left us, but josele is still here (Firmo Espinar)
05 Nov-17:06:21 Re: intermineral liège 2024 (Michael Shaw)
05 Nov-15:17:48 Intermineral liège 2024 (Roger Warin)
05 Nov-02:38:03 Re: munich show (mineralientage) 2024 (James Catmur)
04 Nov-23:47:41 Re: collection of volkmar stingl (Volkmar Stingl)
04 Nov-17:44:39 In memoriam - josé zendrera has left us, but josele is still here (Jordi Fabre)
04 Nov-13:35:35 Re: where is this amethyst from? (James Catmur)
04 Nov-11:24:54 Where is this amethyst from? (Indigo08)

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
116109


The time now is Nov 12, 2024 21:50

Search for a textSearch for a text   

A general guide for using the Forum with some rules and tips
The information provided within this Forum about localities is only given to allow reference to them. Any visit to any of the localities requires you to obtain full permission and relevant information prior to your visit. FMF is strictly against any illicit activities related to collecting minerals.
Interesting fake Cavansite
  
  Index -> Incorrect classification and fakes
Like
6


View previous topic :: View next topic  
Author Message

Joseph DOliveira




Joined: 29 Jan 2012
Posts: 308
Location: Hanmer, Ontario


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Feb 01, 2023 15:24    Post subject: Interesting fake Cavansite  

I came across these fake cavansite specimens in Tucson yesterday. They appear to be gyrolite or prehnite balls dyed blue to imitate cavansite, a very poor and obvious fake.


IMG_4124 (2).JPG
 Mineral: gyrolite
 Locality:
India
 Dimensions: 10x7x5 cm's
 Description:
 Viewed:  13215 Time(s)

IMG_4124 (2).JPG



_________________
Joseph D'Oliveira
Hanmer, Ontario
Canada
Back to top
Reply to topic Reply with quote
Like
3
   

alfredo
Site Admin



Joined: 30 Jan 2008
Posts: 986


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Feb 01, 2023 20:10    Post subject: Re: Interesting fake Cavansite  

Jewel Tunnel received a flat of fake cavansites a couple years ago. The balls were made of a mixture of crushed zeolites, with some broken cavansite in the mix too, and glue. One blue ball even had a human hair embedded in it.
Back to top
Reply to topic Reply with quote
Like
   

SteveB




Joined: 12 Oct 2015
Posts: 237
Location: Canberra

View user's profile

Send private message

PostPosted: Feb 01, 2023 21:28    Post subject: Re: Interesting fake Cavansite  

theres a LOT of fakes and lab grown minerals and gemstones cheaply available on Alibaba from China misrepresented as authentic natural minerals and a lot of sellers in western markets are buying them and reselling as authentic so if you buy be careful these arent glue and crushed offcut fakes and are hard to pickeverything from blue chalcedony, blue quartz, to emeralds saphires opala and diamonds. many pass regular tests.
its a good lesson though to take a uv torch to mineral shows and swap meets etc to show up glues in specimens that are repaired or faked to at least save embarasment on some buys.
even a good source location is meaningless as you cant really prove it. so just bare in mind buyer beware and dont believe everything at face value. that said a beautiful fake can still be a beautiful decoration in your home.
Back to top
Reply to topic Reply with quote
Like
   

alfredo
Site Admin



Joined: 30 Jan 2008
Posts: 986


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Feb 01, 2023 22:09    Post subject: Re: Interesting fake Cavansite  

".,..take a uv torch to mineral shows and swap meets etc to show up glues in specimens that are repaired or faked..."

Unfortunately there are many more types of glue available nowadays than 30 years ago. Some of them do not fluoresce. Some of them do not dissolve in acetone. Fakers ("artists") are not stupid. They keep up with the latest technology. So don't place too much faith in the UV torch. Caveat emptor.
Back to top
Reply to topic Reply with quote
Like
3
   
Display posts from previous:   
   Index -> Incorrect classification and fakes   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 2006-2024


Powered by FMF