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Newest topics and users posts
25 Sep-16:50:53 Re: kamar safed emerald mine in panjshir, afghanistan (Fiebre Verde)
25 Sep-15:05:55 Re: kamar safed emerald mine in panjshir, afghanistan (Josele)
25 Sep-12:28:55 Re: kamar safed emerald mine in panjshir, afghanistan (Fiebre Verde)
25 Sep-09:19:56 Re: will barite save the world? (John Hodgson)
25 Sep-05:41:59 Re: kamar safed emerald mine in panjshir, afghanistan (Josele)
25 Sep-05:08:28 Kamar safed emerald mine in panjshir, afghanistan (Josele)
25 Sep-02:13:49 Re: quartz and epidote with possible hedenbergite from imilchil, morocco (Jordi Fabre)
24 Sep-14:45:17 Re: collection of fiebre verde (panjshir #42) (Fiebre Verde)
24 Sep-12:13:18 Re: will barite save the world? (James Catmur)
24 Sep-12:02:31 Re: quartz and epidote with possible hedenbergite from imilchil, morocco (Adam)
24 Sep-12:01:39 Re: quartz and epidote with possible hedenbergite from imilchil, morocco (Adam)
24 Sep-10:26:29 Re: will barite save the world? (Lluis)
24 Sep-09:25:28 Re: collection of firmo espinar (Firmo Espinar)
24 Sep-08:56:43 Re: will barite save the world? (Pete Richards)
24 Sep-08:53:13 Re: will barite save the world? (Matt_zukowski)
24 Sep-08:38:19 Re: will barite save the world? (Amir Akhavan)
24 Sep-08:30:04 Re: will barite save the world? (Amir Akhavan)
24 Sep-08:27:05 Re: will barite save the world? (Amir Akhavan)
24 Sep-08:25:32 Re: will barite save the world? (Lluis)
24 Sep-07:32:29 Re: quartz and epidote with possible hedenbergite from imilchil, morocco (Adam)
24 Sep-06:58:22 Re: quartz and epidote with possible hedenbergite from imilchil, morocco (Jordi Fabre)
23 Sep-20:42:49 Re: will barite save the world? (Bob Kerr)
23 Sep-19:04:43 Re: will barite save the world? (John Hodgson)
23 Sep-17:32:46 Re: quartz and epidote with possible hedenbergite from imilchil, morocco (Adam)
23 Sep-16:33:54 Re: will barite save the world? (Alfredo)

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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.
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  Topic: Northern Ireland, Ireland collecting sites
Riccardo Modanesi

Replies: 2
Views: 617

PostForum: Rockhounding trips   Posted: Aug 17, 2021 04:13   Subject: Re: Northern Ireland, Ireland collecting sites
Hi Rgangue!
My advice is: you should look for any mineral deposit on Mindat, searching by locality. You should know that minerals likely to be found or historically found in each locality are listed ...
  Topic: 15 years since the beginning of FMF. As time goes!
Riccardo Modanesi

Replies: 19
Views: 1764

PostForum: Comments & Suggestions   Posted: Aug 10, 2021 11:05   Subject: Re: 15 years since the beginning of FMF. As time goes!
Hi to everybody!
It seems like yesterday to me, when Jordi proposed to me to join the Forum, and... 15 years for the Forum and almost 10 years for my joining it are already over!
I had the occasion ...
  Topic: Stay at home - Coronavirus / Covid-19
Riccardo Modanesi

Replies: 364
Views: 124008

PostForum: National Library of Spain / Biblioteca Nacional de España (BNE) and FMF   Posted: Aug 01, 2021 14:24   Subject: Re: Stay at home - Coronavirus / Covid-19
Hi to everybody!
Here in Italy the European Greenpass will be compulsory starting from August 6 for travelling by train, bus, ferry etc, and for having meal in a restaurant (if you eat inside the res ...
  Topic: Hillman Hall of Minerals and Gems
Riccardo Modanesi

Replies: 9
Views: 1704

PostForum: Other Museums in USA   Posted: Jul 22, 2021 12:43   Subject: Re: Hillman Hall of Minerals and Gems
Hi to everybody!
These polished stones are by the biggest majority quartz. The brilliant-coloured ones (blue, pink...) are artificially enhanced by colouring. But... I'm afraid Jordi is not so enthus ...
  Topic: Stay at home - Coronavirus / Covid-19
Riccardo Modanesi

Replies: 364
Views: 124008

PostForum: National Library of Spain / Biblioteca Nacional de España (BNE) and FMF   Posted: Jul 19, 2021 14:35   Subject: Re: Stay at home - Coronavirus / Covid-19
Hi to everybody!
Here in Italy the situation has significantly improved from the point of view of victims and hospitalized people, but cases are increasing again, due to the Delta variant. Ok, let's ...
  Topic: Aura Coating
Riccardo Modanesi

Replies: 15
Views: 2713

PostForum: Incorrect classification and fakes   Posted: Jun 06, 2021 14:38   Subject: Re: Aura Coating
Hi to everybody!
Many years ago I was presented a fake amethyst quartz bought in Morocco by my girl-friend and her parents. I treated it with normal ethylic denaturated alcohol and... the paint got a ...
  Topic: Stay at home - Coronavirus / Covid-19
Riccardo Modanesi

Replies: 364
Views: 124008

PostForum: National Library of Spain / Biblioteca Nacional de España (BNE) and FMF   Posted: May 30, 2021 14:57   Subject: Re: Stay at home - Coronavirus / Covid-19
Hi to everybody!
Here in Italy the situation is slowly improving, TOO slowly in my opinion. I got the first inoculation (AstraZeneca) on March 14 and I should get the second one next Sunday. Then... ...
  Topic: A new mineral: alpha-calcium formate
Riccardo Modanesi

Replies: 9
Views: 2132

PostForum: Minerals and Mineralogy   Posted: May 03, 2021 12:40   Subject: Re: A new mineral: alpha-calcium formate
Hi to everybody!
There are plenty of minerals taking an organic or metallorganic origin: coronene, urea, whewellite, zanazziite are just some examples of them!
Greetings from Italy by Riccardo.
  Topic: How does color treating "work"?
Riccardo Modanesi

Replies: 6
Views: 1165

PostForum: Off-Topic and Introductions   Posted: Apr 24, 2021 10:32   Subject: Re: How does color treating "work"?
Hi to everybody!
There is a lot of literature concerning gemstone treatments, like diamonds. quartzes. topazes. corundums, beryls etc. A typical case is their so- called "Maxixe-beryl, which los ...
  Topic: Sainte-Marie-aux-Mines 2021 cancelled
Riccardo Modanesi

Replies: 6
Views: 1755

PostForum: Mineral Shows   Posted: Apr 13, 2021 03:49   Subject: Re: Sainte-Marie-aux-Mines 2021 cancelled
Hi to everybody!
OK, let's cheer up! I got my first inoculation (AstraZeneca) on last March 14 and now I'm waiting to be called for the second one, it should be within May or early June. And let's ch ...
  Topic: Does Chevron Amethyst Turn Green When Heated?
Riccardo Modanesi

Replies: 1
Views: 828

PostForum: What is it? - Where is it from?   Posted: Apr 01, 2021 08:14   Subject: Re: Does Chevron Amethyst Turn Green When Heated?
Hi to everybody!
Ok, the biggest majority of prasiolites in trade are heated or treated amethysts, as well as the biggest majority of citrines. Nevertheless, some prasiolites like the Polish (Silesia ...
  Topic: Natural or man-made?
Riccardo Modanesi

Replies: 6
Views: 1778

PostForum: What is it? - Where is it from?   Posted: Mar 13, 2021 14:15   Subject: Re: Natural or man-made?
Hi to everybody!
An opinion: the single pale blue/greenish pieces are natural turquoise, but I'm afraid it is a "reconstructed" one, i.e. the pieses are joined together by artificial glue o ...
  Topic: Any opinions?
Riccardo Modanesi

Replies: 4
Views: 1696

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Feb 15, 2021 14:27   Subject: Re: Any opinions?
I can suggest you to see the inclusions, they are decisive to see whether a gemstone is natural, synthetic or treated. I'm afraid they are at least treated, just by seeing the photos.
Greetings from ...
  Topic: Any opinions?
Riccardo Modanesi

Replies: 4
Views: 1696

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Feb 10, 2021 14:36   Subject: Re: Any opinions?
Hi Beau!
My advice is: you should take a manual of gemmology and see the inclusions of these gemstones by a microscope. Moreover you can take a good refractometer (I can't tell the prices here, but I ...
  Topic: Heat changes some minerals - how?
Riccardo Modanesi

Replies: 11
Views: 2502

PostForum: Off-Topic and Introductions   Posted: Jan 30, 2021 13:11   Subject: Re: Heat changes some minerals - how?
Dear Peter

If mineral lose water, well, maybe pickish chemist, but changed also composition,
Which is one of the things Tom said that should not be..
Loosing water, reduction, oxidation are thin ...
  Topic: What type of mineral is this, or maybe a fossil?
Riccardo Modanesi

Replies: 11
Views: 2483

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Jan 29, 2021 11:53   Subject: Re: What type of mineral is this, or maybe a fossil?
Hi to everybody!
Belemnites or some other mollusks are not to be excluded. They might be elongated shells as well!
Greetings from Italy by Riccardo.
  Topic: Heat changes some minerals - how?
Riccardo Modanesi

Replies: 11
Views: 2502

PostForum: Off-Topic and Introductions   Posted: Jan 29, 2021 11:49   Subject: Re: Heat changes some minerals - how?
Hi to everybody!
Some years ago in Idar-Oberstein my work group and myself made an experiment with three gemstones: a brownish topaz, a gray zoisite and an amethyst quartz. After heat treatment they ...
  Topic: Chromium in jewels
Riccardo Modanesi

Replies: 3
Views: 1807

PostForum: Off-Topic and Introductions   Posted: Jan 26, 2021 05:07   Subject: Re: Chromium in jewels
Hi to everybody!
The difference is due to different combinatons and coordinations of chrome with other elements. Andradite, grossular and uvarovite garnets get green (uvarovite, demantoid and tsavori ...
  Topic: Mysterious Red Pyramids in Mexican opal
Riccardo Modanesi

Replies: 8
Views: 2449

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Jan 21, 2021 06:14   Subject: Re: Mysterious Red Pyramids in Mexican opal
Hi to everybody!
Rutile and hematite inclusions are not to be excluded as well! Some opals contain these minerals as inclusion as well!
Greetings from Italy by Riccardo.
  Topic: Synthetic rubies and shortwave UV
Riccardo Modanesi

Replies: 2
Views: 1494

PostForum: Off-Topic and Introductions   Posted: Jan 20, 2021 13:48   Subject: Re: Synthetic rubies and shortwave UV
Hi to everybody!
Pay attention: synthetic rubies are nowadays made in such a similar way to natural processes, that it's sometimes very difficult to distinguish them from natural stones! Ramaura synt ...
 
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