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FMF - Friends of Minerals Forum, discussion and message board
The place to share your mineralogical experiences


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Newest topics and users posts
08 May-17:32:48 Re: quartz twins (Bob Morgan)
07 May-23:40:44 Re: quartz twins (Herwig)
07 May-17:07:55 The mizunaka collection - smoky quartz (Am Mizunaka)
07 May-15:10:39 Re: quartz twins (Roger Warin)
07 May-14:13:54 Re: collection of michael shaw (James Catmur)
07 May-10:22:14 Re: collection of michael shaw - quartz ps. After barite (Michael Shaw)
07 May-09:39:53 Re: quartz twins (Bob Carnein)
07 May-08:22:46 Re: quartz twins (Pete Richards)
06 May-23:47:28 Re: collection of volkmar stingl (Volkmar Stingl)
06 May-15:58:27 Tricolour tourmaline from madagascar / mvm (minerals - virtual museum) collection (Jordi Fabre)
06 May-15:25:14 Re: carlos pareja photo collection (Carlos Pareja)
06 May-15:20:01 Re: carlos pareja photo collection (Carlos Pareja)
06 May-09:58:11 Re: the mim museum in beirut, lebanon (Mim Museum)
06 May-07:05:10 Re: martin danovski minerals collection (Danovskim)
05 May-22:27:21 Re: quartz twins (Bob Morgan)
05 May-16:13:09 The mizunaka collection - rhodochrosite (Am Mizunaka)
05 May-13:07:52 Elbaite (variety paraíba) from brazil / mvm (minerals - virtual museum) collection (Jordi Fabre)
05 May-12:41:15 Quartz twins (Bob Carnein)
05 May-08:26:19 Re: collection of michael shaw (Michael Shaw)
04 May-16:39:42 Brochantite from milpillas mine, mexico / mvm (minerals - virtual museum) collection (Jordi Fabre)
03 May-23:23:09 Re: collection of volkmar stingl (Volkmar Stingl)
03 May-17:21:53 Re: martin danovski minerals collection (Jordi Fabre)
03 May-11:16:02 Re: ghost dendrite (Riccardo Modanesi)
03 May-05:51:59 Re: ghost dendrite (James Catmur)
03 May-04:17:02 Re: ghost dendrite (Marco Campos-venuti)

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  Topic: Question in regards to old collections
Juan Roberto Rivera

Replies: 4
Views: 1570

PostForum: Off-Topic and Introductions   Posted: Apr 04, 2025 10:35   Subject: Re: Question in regards to old collections
Thank you Tobi. Appreciate the reply. I do agree with your assessment. Just wanted to make sure. Thank you again.

Hi, my humble opinion on this: When things like perky boxes or mounting material, ...
  Topic: Question in regards to old collections
Juan Roberto Rivera

Replies: 4
Views: 1570

PostForum: Off-Topic and Introductions   Posted: Apr 04, 2025 10:34   Subject: Re: Question in regards to old collections
Thank you Marvin. I just wanted to know how to properly handle and I agree, changing it out with newer boxes and maintain old labels for sure. Just wanted to check in on what others thought. Thank y ...
  Topic: Question in regards to old collections
Juan Roberto Rivera

Replies: 4
Views: 1570

PostForum: Off-Topic and Introductions   Posted: Mar 24, 2025 19:53   Subject: Question in regards to old collections
I don't know if this is the right place but I looked at the index and it seemed like it was. Just wanted to ask about old collections that I acquire. There are some specimens that I received from old ...
  Topic: Creating “fitted” clear acrylic mineral display stands. How is it done?
Juan Roberto Rivera

Replies: 2
Views: 9317

PostForum: Conserving, Preparing and Cleaning Minerals   Posted: Mar 03, 2025 10:19   Subject: Re: Creating “fitted” clear acrylic mineral display stands. How is it done?
They are all made with a CNC. Hand making a functional and stable base is like trying to do a mouth guard without a mold, it won't fit snugly 99% of the time. If you don't want to spend money on a CN ...
  Topic: Hello all, just wanted to confirm if Hardin, Elmwood or Mexican Fluorite
Juan Roberto Rivera

Replies: 2
Views: 1267

PostForum: What is it? - Where is it from?   Posted: Mar 03, 2025 10:17   Subject: Re: Hello all, just wanted to confirm if Hardin, Elmwood or Mexican Fluorite
I am not sure but it looks like your specimen may have "carthage corners" (lighter colored material in the corners). If so, then it probably is Elmwood.

Not clear windows but they are wi ...
  Topic: Hello all, just wanted to confirm if Hardin, Elmwood or Mexican Fluorite
Juan Roberto Rivera

Replies: 2
Views: 1267

PostForum: What is it? - Where is it from?   Posted: Feb 28, 2025 14:32   Subject: Hello all, just wanted to confirm if Hardin, Elmwood or Mexican Fluorite
I had gotten this fluorite from a local mineral show from a reputable dealer but I think this one was incorrect on the label. It was listed as "elmwood" on the provenance card. I went with ...
  Topic: Helvine with Quartz or Garnet?
Juan Roberto Rivera

Replies: 17
Views: 4646

PostForum: What is it? - Where is it from?   Posted: Jan 27, 2025 21:01   Subject: Re: Helvine with Quartz or Garnet?
There is no physical or visual difference between Helvine (not 'Helvite but Helvine) and Genthelvite. Only an individual and accurate analysis can determine, for each piece, whether it belongs to one ...
  Topic: Helvine with Quartz or Garnet?
Juan Roberto Rivera

Replies: 17
Views: 4646

PostForum: What is it? - Where is it from?   Posted: Jan 27, 2025 16:22   Subject: Re: Helvine with Quartz or Garnet?
A magnet will tell you if magnetite is present, but I don't see anything that looks like magnetite. As helvine or genthelvite it is much more valuable than garnet!

Got it ok. Thank you. Looks li ...
  Topic: Helvine with Quartz or Garnet?
Juan Roberto Rivera

Replies: 17
Views: 4646

PostForum: What is it? - Where is it from?   Posted: Jan 27, 2025 16:16   Subject: Re: Helvine with Quartz or Garnet?
Hi, I would guess this is helvite from Huanggang.

I actually came across one of Jordi's minerals that were similar.

So genthelvite w/ Quartz I would assume. Thanks
  Topic: Helvine with Quartz or Garnet?
Juan Roberto Rivera

Replies: 17
Views: 4646

PostForum: What is it? - Where is it from?   Posted: Jan 27, 2025 16:12   Subject: Re: Helvine with Quartz or Garnet?
Could it be Genthelvite on Dodecahedral Magnetite?
  Topic: Helvine with Quartz or Garnet?
Juan Roberto Rivera

Replies: 17
Views: 4646

PostForum: What is it? - Where is it from?   Posted: Jan 27, 2025 16:06   Subject: Re: Helvine with Quartz or Garnet?
Another image
  Topic: Helvine with Quartz or Garnet?
Juan Roberto Rivera

Replies: 17
Views: 4646

PostForum: What is it? - Where is it from?   Posted: Jan 27, 2025 16:05   Subject: Re: Helvine with Quartz or Garnet?
Another image
  Topic: Helvine with Quartz or Garnet?
Juan Roberto Rivera

Replies: 17
Views: 4646

PostForum: What is it? - Where is it from?   Posted: Jan 27, 2025 16:04   Subject: Re: Helvine with Quartz or Garnet?
Another image
  Topic: Helvine with Quartz or Garnet?
Juan Roberto Rivera

Replies: 17
Views: 4646

PostForum: What is it? - Where is it from?   Posted: Jan 27, 2025 16:02   Subject: Helvine with Quartz or Garnet?
When I procured this from a Chinese vendor I was told it was Garnet from Inner Mongolia. While I can see the color being garnet, the associated minerals tell me something different. As I was research ...
  Topic: Labeled on back as "England" but not sure locality or even if England at all
Juan Roberto Rivera

Replies: 15
Views: 3948

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Jan 14, 2025 10:26   Subject: Re: Labeled on back as "England" but not sure locality or even if England at all
What does it say under 'England'?

Unfortunately I cannot make it out.
 
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