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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.
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| Search found 18 matches |
| Author | Message |
|---|---|
 Topic: Vauxite from Huanuni? |
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| al mar Replies: 3 Views: 4324 |
 Forum: Mines and Mineral Localities Posted: Nov 08, 2020 02:37 Subject: Re: Vauxite from Huanuni? |
| Here I have one photo of those vauxites if it helps. | |
| Topic: Vauxite from Huanuni? |
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| al mar Replies: 3 Views: 4324 |
Forum: Mines and Mineral Localities Posted: Nov 06, 2020 06:44 Subject: Vauxite from Huanuni? |
| Hello,
On my last trip to Bolivia, in 2016 I got one sample of vauxite that supposedly came from the Huanuni mine. I got that sample from a mining engineer that works in the mine, and taking minera ... |
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| Topic: Sodium Dithonite, Waller solution, Oxalic acid or HCl |
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| al mar Replies: 9 Views: 8218 |
Forum: Conserving, Preparing and Cleaning Minerals Posted: Jul 26, 2020 12:34 Subject: Re: Sodium Dithonite, Waller solution, Oxalic acid or HCl |
| Hello, to all,
Thanks for the guidelines! I started with the cleaning and preparation, we will see the results. A last question. What andvantages/disadvantages has the Waller solution (Sodium ... |
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| Topic: Sodium Dithonite, Waller solution, Oxalic acid or HCl |
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| al mar Replies: 9 Views: 8218 |
Forum: Conserving, Preparing and Cleaning Minerals Posted: Jul 21, 2020 16:43 Subject: Re: Sodium Dithonite, Waller solution, Oxalic acid or HCl |
| Hi,
Thanks to all. First yes, managing chemical products even these that are commonly used has to be done with the proper security measures that are available on the internet and on the safety form ... |
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| Topic: Sodium Dithonite, Waller solution, Oxalic acid or HCl |
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| al mar Replies: 9 Views: 8218 |
Forum: Conserving, Preparing and Cleaning Minerals Posted: Jul 21, 2020 04:35 Subject: Sodium Dithonite, Waller solution, Oxalic acid or HCl |
| Hello,
I have some samples of quartz and feldspar with a coating of iron oxides. Being quite resistant minerals, I am only used to clean them with HCl (muriatic acid), but I have read that it i ... |
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| Topic: Natural Blue Topaz w/ Multiple Tiny Unknown Mineral Inclusions |
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| al mar Replies: 4 Views: 3092 |
Forum: What is it? - Where is it from? Posted: May 16, 2020 10:34 Subject: Re: Natural Blue Topaz w/ Multiple Tiny Unknown Mineral Inclusions |
| I have seen elbaites directly associated with galena from brazil, and not glued for sure. Totally strange, but possible | |
| Topic: Colours of Rhodochrosite and Other Mn Bearing Carbonates |
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| al mar Replies: 9 Views: 9753 |
Forum: Minerals and Mineralogy Posted: Jul 25, 2019 08:44 Subject: Re: Colours of Rhodochrosite and Other Mn Bearing Carbonates |
| Thanks Alfredo. The one that I saw from Huanuni could be rhodocrosite but also could be an Mn bearing Carbonate. Regarding ones from Llallagua the aspect was the one that you describe so it would be p ... | |
| Topic: Colours of Rhodochrosite and Other Mn Bearing Carbonates |
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| al mar Replies: 9 Views: 9753 |
Forum: Minerals and Mineralogy Posted: Jul 23, 2019 14:07 Subject: Re: Colours of Rhodochrosite and Other Mn Bearing Carbonates |
| Regarding to Bolivian ones, in Mindat there is one photo from San José, and I have seen botryoidal ones from Llallagua and one from Huanuni. All of them were pale pink, different to siderites from the ... | |
| Topic: Colours of Rhodochrosite and Other Mn Bearing Carbonates |
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| al mar Replies: 9 Views: 9753 |
Forum: Minerals and Mineralogy Posted: Jul 22, 2019 17:39 Subject: Re: Colours of Rhodochrosite and Other Mn Bearing Carbonates |
| Hi, to all, and thanks for the answers.
I found interesting the article that Pete quotes, and seems logical looking for example the capillitite variety,( https://www.mindat.org/min-27208.html ) imp ... |
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| Topic: Colours of Rhodochrosite and Other Mn Bearing Carbonates |
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| al mar Replies: 9 Views: 9753 |
Forum: Minerals and Mineralogy Posted: Jul 22, 2019 08:00 Subject: Colours of Rhodochrosite and Other Mn Bearing Carbonates |
| Hello,
I have seen that rhodocrosites from some deposits, as the ones from Huelva province in Spain, or the El-Valle Boinás ones ( https://www.mindat.org/gallery.php?loc=106025&min=3406) had a ... |
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| Topic: How to "Defrost" crystals in quartz |
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| al mar Replies: 4 Views: 7521 |
Forum: Conserving, Preparing and Cleaning Minerals Posted: Aug 26, 2018 09:45 Subject: Re: How to "Defrost" crystals in quartz |
| I have seem other samples in mineralogical shows (but it is difficult to find photos available to post) I know that some world top laboratories are working on that, but I find difficult to know thei ... | |
| Topic: How to "Defrost" crystals in quartz |
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| al mar Replies: 4 Views: 7521 |
Forum: Conserving, Preparing and Cleaning Minerals Posted: Aug 26, 2018 08:25 Subject: How to "Defrost" crystals in quartz |
| Hello, I have seen some crystals "defrost" from the quartz matrix covering, and the appearance is in most cases very good. I would like to know about experiences and methods used successfull ... | |
| Topic: Help me with price |
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| al mar Replies: 3 Views: 6061 |
Forum: Off-Topic and Introductions Posted: Jun 30, 2012 08:47 Subject: Re: Help me with price |
| This forum don´t allow questions about mineral trade. You can find a lot of similar crocoites at sale on shows or other websites, you should compare prices. | |
| Topic: Mineral specimens with inclusions - (28) |
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| al mar Replies: 95 Views: 195480 |
Forum: Featured Columns of FMF Posted: Sep 03, 2011 05:45 Subject: Re: Mineral specimens with inclusions |
| Elise, I have seen some very similar blue quartz specimens from Brazil . | |
| Topic: New Virtual Museum |
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| al mar Replies: 12 Views: 21006 |
Forum: Worlwide Museums & Visits to Museums and private collections Posted: Jul 22, 2011 15:11 Subject: Re: New Virtual Museum |
| Other mistake is a pink "dravite" from California...I suppose that is an elbaite. | |
| Topic: Inclusions of spiral or helical growth and screw dislocations - (0) |
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| al mar Replies: 42 Views: 119579 |
Forum: Featured Columns of FMF Posted: May 23, 2011 08:24 Subject: Re: Inclusions of spiral or helical growth and screw dislocations - (0) |
| I have seen a few spiral inclusions and this type of inclusions reminds me "Liesang rings"
Can be any scientific reason or only is apearance ? |
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| Topic: Unusual Hematite form? |
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| al mar Replies: 5 Views: 8321 |
Forum: Minerals and Mineralogy Posted: Feb 10, 2011 10:08 Subject: Re: Unusual Haematite form ? |
| An strange form!
I think must be an ancient stalactitic form , the stalactites leave the original matrix and were cemented on a massive iron ore . However, there are so long. |
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| Topic: New blog about Hiendelaencina district.(in spanish) |
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| al mar Replies: 0 Views: 4356 |
Forum: Off-Topic and Introductions Posted: Feb 17, 2009 15:13 Subject: New blog about Hiendelaencina district.(in spanish) |
| Hello, I been created a new blog about Hiendelaencina district, but it is in Spanish language:
https://laverdaddelosartistas.blogspot.com (link normalized by FMF) |
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