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Search found 18 matches |
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al mar Replies: 3 Views: 4324 |
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Here I have one photo of those vauxites if it helps. | |
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al mar Replies: 3 Views: 4324 |
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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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al mar Replies: 9 Views: 8218 |
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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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al mar Replies: 9 Views: 8218 |
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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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al mar Replies: 9 Views: 8218 |
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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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al mar Replies: 4 Views: 3092 |
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I have seen elbaites directly associated with galena from brazil, and not glued for sure. Totally strange, but possible | |
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al mar Replies: 9 Views: 9753 |
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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 ... | |
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al mar Replies: 9 Views: 9753 |
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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 ... | |
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al mar Replies: 9 Views: 9753 |
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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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al mar Replies: 9 Views: 9753 |
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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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al mar Replies: 4 Views: 7521 |
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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 ... | |
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al mar Replies: 4 Views: 7521 |
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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 ... | |
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al mar Replies: 3 Views: 6061 |
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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. | |
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al mar Replies: 95 Views: 195480 |
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Elise, I have seen some very similar blue quartz specimens from Brazil . | |
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al mar Replies: 12 Views: 21006 |
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Other mistake is a pink "dravite" from California...I suppose that is an elbaite. | |
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al mar Replies: 42 Views: 119579 |
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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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al mar Replies: 5 Views: 8321 |
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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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al mar Replies: 0 Views: 4356 |
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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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