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Newest topics and users posts
12 Jul-23:04:14 Re: collection of volkmar stingl (Volkmar Stingl)
12 Jul-09:00:56 Re: the mim museum in beirut, lebanon (Mim Museum)
12 Jul-06:59:21 Re: collection from dany mabillard (Dany Mabillard)
12 Jul-00:49:24 Re: are there pyrite balls found in verzino? (Herwig)
12 Jul-00:25:14 Re: are there pyrite balls found in verzino? (Roger Warin)
12 Jul-00:08:38 Re: are there pyrite balls found in verzino? (Roger Warin)
11 Jul-17:36:07 The mizunaka collection - fluorite (Am Mizunaka)
11 Jul-14:14:25 Re: slice schalenblende (Mathias)
11 Jul-14:08:21 Re: czech rockhounding adventures – agates & amethysts (Stoner)
11 Jul-08:12:55 Czech rockhounding adventures – agates & amethysts (Stoner)
11 Jul-08:03:52 Re: are there pyrite balls found in verzino? (James Catmur)
11 Jul-02:33:28 Re: collection of michael shaw (Michael Shaw)
11 Jul-00:24:28 Re: collection of volkmar stingl (Volkmar Stingl)
10 Jul-13:46:07 Re: are there pyrite balls found in verzino? (Dany Mabillard)
10 Jul-13:45:53 Veszelyite from sanguozhuang, china / #mvm (minerals - virtual museum) collection (Jordi Fabre)
09 Jul-15:45:27 Re: caldbeck fell trip (Roy Starkey)
09 Jul-10:02:30 Re: caldbeck fell trip (Forrestblyth)
09 Jul-09:41:21 Caldbeck fell trip (Forrestblyth)
08 Jul-13:17:38 Re: stellerite specimens from piedra parada, mexico (John Betts)
07 Jul-15:58:21 The mizunaka collection - beryl (Am Mizunaka)
07 Jul-15:57:07 Milpillas' azure kiss (Silvia)
07 Jul-07:06:19 Re: collection of michael shaw (Michael Shaw)
07 Jul-03:36:36 Re: the mim museum in beirut, lebanon (Mim Museum)
06 Jul-14:50:22 Re: are there pyrite balls found in verzino? (Dany Mabillard)
06 Jul-11:07:51 Fluorite, baryte from moscona mine, spain / #mvm (minerals - virtual museum) collection (Jordi Fabre)

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  Topic: Tourmaline Namibia?
Riccardo Modanesi

Replies: 4
Views: 1050

PostForum: What is it? - Where is it from?   Posted: Jun 09, 2025 05:45   Subject: Re: Tourmaline Namibia?
hi to everybody!
it could be tsilaisite or dravite, I would say tsilaisite.
Greetings from Italy by Riccardo.
  Topic: Ghost dendrite
Riccardo Modanesi

Replies: 7
Views: 2221

PostForum: Minerals and Mineralogy   Posted: May 03, 2025 11:16   Subject: Re: Ghost dendrite
Hi to everybody!
There could be another possibility: the dendrites are made of manganese and iron oxides and hydroxides. As the biggest majority of you knows, iron oxidates from Fe++ to Fe+++ with th ...
  Topic: If anybody knows this gemstone, please tell me
Riccardo Modanesi

Replies: 7
Views: 9243

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Apr 24, 2025 15:16   Subject: Re: If anybody knows this gemstone, please tell me
Hi to everybody!
I think the dark-red crystals are spessartine garnets and the mother-rock pegmatite. I found many similar crystals in Val Codera (Lombardy, Italy), that's why I am pretty sure of.
G ...
  Topic: Help Identifiying: Moonstone?
Riccardo Modanesi

Replies: 4
Views: 2025

PostForum: What is it? - Where is it from?   Posted: Apr 15, 2025 02:02   Subject: Re: Help Identifiying: Moonstone?
Hi to everybody!
As a gemmologist I can say it is a glass! Veils and gas bubbles are evident inside there! But some synthetic spinels take this opalescence effect and are made to imitate moonstone!
...
  Topic: Limonitized garnet?
Riccardo Modanesi

Replies: 36
Views: 13285

PostForum: What is it? - Where is it from?   Posted: Jan 28, 2025 03:11   Subject: Re: Limonitized garnet?
Hi Roger!
I think I agree with you: just label it as olivine or peridot and don't search strange adventures. Glossary and other manuals keep just extreme terms in mineral series. Plagioclases, for in ...
  Topic: Book(s) about minerals for children ?
Riccardo Modanesi

Replies: 4
Views: 3630

PostForum: Mineralogical Literature   Posted: Jan 15, 2025 02:53   Subject: Re: Book(s) about minerals for children ?
Hi to everybody!
Another book I can advice you is "MineRari", by Marco Majrani and Valentina Quadrio. Unfortunately for many of you it's in Italian, but images and drawings are nice!
Greet ...
  Topic: Tektite ?
Riccardo Modanesi

Replies: 5
Views: 2426

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Dec 17, 2024 10:12   Subject: Re: Tektite ?
Hi to everybody!
By seeing these photos I can say it's an agate. I found many of them in Idar-Oberstein, even along the forest paths around the town.
Greetings from Italy by Riccardo.
  Topic: I think this is Malachite after Barite? thoughts?
Riccardo Modanesi

Replies: 8
Views: 6873

PostForum: Minerals and Mineralogy   Posted: Dec 12, 2024 10:58   Subject: Re: I think this is Malachite after Barite? thoughts?
Hi to everybody!
Nothing to be astonished about! Azurite, malachite and dioptase are all copper minerals, therefore it's not surprising they grow up together! Malachite after baryte? Mmmmhhhh!!!
I w ...
  Topic: Colors of minerals
Riccardo Modanesi

Replies: 7
Views: 6505

PostForum: Minerals and Mineralogy   Posted: Sep 18, 2024 08:50   Subject: Re: Colors of minerals
Hi to everybody!
As a gemmologist I can have some considerations. First of all a colour perception is very subjective and personal, nevertheless there are some percentage of primary colours compoundi ...
  Topic: Altered quartz or pseudomorph?
Riccardo Modanesi

Replies: 7
Views: 4999

PostForum: What is it? - Where is it from?   Posted: Jul 30, 2024 08:23   Subject: Re: Altered quartz or pseudomorph?
Hi to everybody!
I don't fell like excluding another one which wasn't mentioned yet by anybody here: FLUORITE! It's not so seldom to find it as a covering mineral on quartz crystals!
Greetings from ...
  Topic: Vorobyevite, a 7th variety of beryl
Riccardo Modanesi

Replies: 2
Views: 3809

PostForum: Minerals and Mineralogy   Posted: Jul 24, 2024 05:56   Subject: Re: Vorobyevite, a 7th variety of beryl
Hi to everybody!
Vorobyevite is NOT a mineral species, but a variety of beryl, like aquamarine, emerald, morganite etc! Varieties are NOT species!
Greetings from Italy by Riccardo.
  Topic: Help to identify a find
Riccardo Modanesi

Replies: 9
Views: 6106

PostForum: What is it? - Where is it from?   Posted: May 25, 2024 02:46   Subject: Re: Help to identify a find
Hi to everybody!
Such material is usually sold as "carborundum" or "carborandite", which is silicon carbide whose thermical conductivity is very similar to the diamond. Cut gemsto ...
  Topic: European Mineral and Mining Museums
Riccardo Modanesi

Replies: 11
Views: 30575

PostForum: Worlwide Museums & Visits to Museums and private collections   Posted: May 16, 2024 11:43   Subject: Re: European Mineral and Mining Museums
Hi to everybody!
As I am Italian, I can recommend you the Natural History Museum in Milan, but there is one in Rome too! Then there is one in Trento, Northern Italy, and historical mines in Sicily an ...
  Topic: Collection of Philippe Durand
Riccardo Modanesi

Replies: 360
Views: 450371

PostForum: Collection photos and Collector's page   Posted: Mar 11, 2024 16:19   Subject: Re: Collection of Philippe Durand
Hi to everybody, hi Philippe!
Ok, it's difficult to detect an inclusion just by seeing a photo, however I can try.
Those inclusions in quartz seem to me as liquid phases in form of small drops, or a ...
  Topic: Who is coming to Mineralientage?
Riccardo Modanesi

Replies: 20
Views: 31878

PostForum: Mineral Shows   Posted: Sep 24, 2023 11:55   Subject: Re: Who is coming to Mineralientage?
Hi to everybody!
According to someone's messages: truffles in Munich? I never heard about! If you want to eat good truffles, come to Italy! Piemonte, Umbira, Marche and Abruzzo are the regions where ...
 
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