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Melanophlogite?
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Luiz Oliveira




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PostPosted: Apr 06, 2021 14:38    Post subject: Melanophlogite?  

Gostaria de informações sobre a Melanoflogita! Tenho umas amostras que parecem ser opala, cristobalita, Melanoflogita, calcedônia, cordierita! Isto, porque são rochas(bombas vulcânicas)! Quando cálculo o peso específico, tenho um resultado de 2,61, 2,57, 2,65! Porém, quando diminuo as amostras o peso específico vai caindo até 2,2! A dureza é em torno de 7 a 7,5. Juntamente com estes agregados, tenho vidro vulcânico de gravidade específica de 2,66!
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Bergur_E_Sigurdarson




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PostPosted: Apr 06, 2021 14:56    Post subject: Re: Melanophlogite?  

Try mindat?

https://www.mindat.org/min-2630.html
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Luiz Oliveira




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PostPosted: Apr 06, 2021 17:24    Post subject: Re: Melanophlogite?  

Eu já havia pesquisado no mindad! Porém não consegui boa elucidação! Acredito que a dificuldade está no tamanho dos cristais que são pequenos para fazer cálculo de gravidade específica!


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Bergur_E_Sigurdarson




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PostPosted: Apr 06, 2021 17:42    Post subject: Re: Melanophlogite?  

Sounds like you need a lab to test your samples.
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Jordi Fabre
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PostPosted: Apr 07, 2021 01:54    Post subject: Re: Melanophlogite?  

Bergur_E_Sigurdarson wrote:
Sounds like you need a lab to test your samples.

And also seems that you should publish your text in English language.
Please use the Google translator or similar before publish your messages in Portuguese language. Thank you.
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Luiz Oliveira




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PostPosted: Apr 07, 2021 13:20    Post subject: Re: Melanophlogite?  

Boa tarde! Eu tentei usar o google tradutor, porém a tradução não foi fidedigna ao meu texto original! Espero a compreensão de todos! Mas além de me indicarem um laboratório, alguém mais pode dar sua opinião?
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Pete Richards
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PostPosted: Apr 07, 2021 13:27    Post subject: Re: Melanophlogite?  

From the photograph, I would have to guess quartz, maybe including broken fragments of a fine-grained quartz like jasper. Of the options you list, none is reasonable except chalcedony, both because they look different and most are quite rare. Chalcedony is fine-grained quartz, but that term usually suggests a different appearance than your rock.

DeepL translation:

A partir da fotografia, teria de adivinhar o quartzo, talvez incluindo fragmentos quebrados de um quartzo de grão fino como o jaspe. Das opções listadas, nenhuma é razoável, excepto a calcedónia, ambas porque parecem diferentes e a maioria são bastante raras. A calcedónia é quartzo de grão fino, mas esse termo sugere normalmente uma aparência diferente da sua rocha.

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Collecting and studying crystals with interesting habits, twinning, and epitaxy
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James Catmur
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PostPosted: Apr 07, 2021 13:31    Post subject: Re: Melanophlogite?  

Hoje falamos portugues

Today we work in Portuguese.
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Luiz Oliveira




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PostPosted: Apr 07, 2021 13:50    Post subject: Re: Melanophlogite?  

Estou mandando uma foto melhor!


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Luiz Oliveira




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PostPosted: Apr 07, 2021 13:55    Post subject: Re: Melanophlogite?  

My hypothesis is that it’s a beta cristobalite who’s been metamorphosed into Melanoflogite!


A minha hipótese é que seja uma cristobalita beta que sofreu metamorfose para Melanoflogita!
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Luiz Oliveira




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PostPosted: Apr 09, 2021 10:26    Post subject: Re: Melanophlogite?  

Tenho outras amostras! Mas o que me chama muito a atenção, é quando após lapidar no disco de corte as pedras ficam escuras no polimento! Li que a Melanoflogita fica preta quando aquecida! E essa cristã escura atrapalha o brilho e a bela aparência da gema! Mas aprendi a deixar a superfície quase limpa durante 3 anos de estudo!


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PostPosted: Jul 30, 2021 14:58    Post subject: Re: Melanophlogite?  

Good afternoon! After analyzing with the microscope the rocks I presented, I was able to highlight the orthorrhobic crystals! Therefore the photographs presented in this discussion refer to cordierita! This was the first diagnosis I ever made! But a geologist here from Brazil gave me a quartz report with inclusions! He did not see the crystals and despised the polyroism of the stones! I wonder if cordierite can be in rare cases uniaxial positive, such as quartz?


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Luiz Oliveira




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PostPosted: Dec 18, 2022 08:48    Post subject: Re: Melanophlogite?  

Bom dia! Depois de incansável insistência em Cordierita, vejo que tenho grupo Osumilite! E aqui vai uma amostra de um grande cristal de Chaiesite! Ele está bem alterado, mas conserva a forma de cristalização! A Melanoflogita Também está presente na maioria destas espécies!


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alfredo
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PostPosted: Dec 18, 2022 12:28    Post subject: Re: Melanophlogite?  

What you have there is concentric layers of iron oxide, nothing related to melanophlogite, chayesite, osumilite, nor cordierite. Indeed a curious rock - I'd keep it too if I found it - but nothing with exotic mineralogy.
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Luiz Oliveira




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PostPosted: Jan 03, 2023 06:21    Post subject: Re: Melanophlogite?  

Olá Alfredo! Obrigado pelo seu comentário! Fico feliz!
Aqui no Brasil, apesar de muita riqueza geológica, há pouco interesse científico nesta área, a não ser em minerais já conhecidos como diamantes, água marinha, turmalinas, esmeralda. Eu já tentei buscar recursos diagnósticos por aqui, mas só me decepcionei!
Eu acredito ter material de muito valor científico e também comercial! Mas não encontro respaldo no Brasil! Acredito ter cristais como Roedderite, Eifelite, Chaiesite, Osumilite e Poldretteite! As minhas rochas tem evidências de serem vulcânicas do cambriano e pré cambriano! São às vezes escurecidas por fora pela presença de Melanofllogita! Tenho também nas rochas, a presença de fósseis como hifas de fungos e reprodução assexuada! Tenho paralelamente a essas rochas, outras rochas de aspecto argioloso que eu considero ser Nacrite (pedra de Thian huan)! Portanto, considero este cenário geológico riquíssimo!
A presença da suposta Roedderite, me leva a levantar uma hipótese da origem da vida no nosso planeta de forma extra-terrestre, pois a Roedderite é originada quando sofre ação do sol!
Concluindo, acredito ter encontrado as "sementes da vida"!
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PostPosted: Jan 03, 2023 09:33    Post subject: Re: Melanophlogite?  

Google translate:


Luiz Oliveira wrote:
Hello Alfred! Thanks for your comment! I'm glad!
Here in Brazil, despite the great geological richness, there is little scientific interest in this area, except for already known minerals such as diamonds, aquamarines, tourmalines, emeralds. I already tried to look for diagnostic resources here, but I was only disappointed!
I believe I have material of great scientific and commercial value! But I don't find support in Brazil! I believe I have crystals like Roedderite, Eifelite, Chaiesite, Osumilite and Poldretteite! My rocks have evidence of being Cambrian and Precambrian volcanic! They are sometimes darkened on the outside by the presence of Melanophlogite! I also have in the rocks, the presence of fossils such as fungal hyphae and asexual reproduction! Parallel to these rocks, I have other clayey rocks that I consider to be Nacrite (Thian Huan stone)! Therefore, I consider this geological scenario very rich!
The presence of the supposed Roedderite leads me to raise a hypothesis of the origin of life on our planet in an extra-terrestrial way, as Roedderite originates when it undergoes action from the sun!
In conclusion, I believe I have found the "seeds of life"!
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PostPosted: Jan 03, 2023 13:50    Post subject: Re: Melanophlogite?  

I am really very interested in your thoughts.
Can you say more?
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Luiz Oliveira




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PostPosted: Jan 03, 2023 21:40    Post subject: Re: Melanophlogite?  

Sim, Roger! Há 6 anos venho estudando algumas rochas que me chamaram a atenção pelo aspecto apresentado! Comecei a estudar umas rochas moles que alguns geólogos aqui identificaram absurdamente como quartzo! A dureza dessas não passa de 3 em mhos! Elas também contém fósseis! Uma mistura de alófano com nacrite! Poderiam ser astrofilita ou opala! Mas a densidade relativa apesar de ter variações, o valor mais encontrado é de 2.43. Após submeter essas rochas em lapidação, o resultado é de um belíssimo visual! Esse belo visual, eu o atribuo ao material do fitoplâncton talvez de um mar pré existente!
Mas concomitante a esse estudo, fui imbuído a estudar uma outra rocha que era encontrada nas proximidades! Porém esta rocha é mais dura(7 em mhos) e mais cristalina! E pelo fato de ter cores púrpura, avermelhadas, brancas, incolores, eu pensei ser Cordierita. Os geólogos daqui as classificaram como quartzo! Pois após lapidadas o índice de refração, o sinal óptico(+) são muito parecidos com o quartzo! Porém elas são pleocroicas, de densidade relativa variável (2,51 a 2,72), soltam um material escuro quando lapidadas em disco fino(800). Contém fósseis de seres microscópios evidenciados em objetiva de 10 e 40x! Consigo ainda identificar clivagem, bolinhas(Melanoflogita) e cristais hexagonais achatados(azuis, pretos, vermelhos, amarelados)! Também prováveis cristais de almarudita!
Sendo assim, concluo que as minhas rochas não são Cordierita, mas sim de vários minerais do grupo Osumilite!
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PostPosted: Jan 03, 2023 22:03    Post subject: Re: Melanophlogite?  

So far you have shown us a tumbled (naturally or not) stone and some sort of concretion/pseudomorph that looks like it is mostly iron oxide. You have thrown out all sorts of exotic mineral names, some optical properties and harness tests, and claims about fossils and such that you say tell us something about the origins of life. i just don't know what to think about your posts or what you want from us.

Please provide a concise statement telling us what you want from us.

If it is to confirm value - we don't do that here.

If it is to confirm mineralogy - you have not given us what we need to help you, and we have suggested that you get analyses done. Please do the analyses and maybe we can you tell you more about mineralogy. You said that you have shown it to a geologist and they say it (the pebble) is included quartz. It looks like some intrusive rock to me, but you can't tell much from your pictures. Take it to other geologists, especially those with experience in your area, perhaps they can tell you what formation it comes from.
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Luiz Oliveira




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PostPosted: Jan 03, 2023 22:12    Post subject: Re: Melanophlogite?  

Luiz Oliveira wrote:
Sim, Roger! Há 6 anos venho estudando algumas rochas que me chamaram a atenção pelo aspecto apresentado! Comecei a estudar umas rochas moles que alguns geólogos aqui identificaram absurdamente como quartzo! A dureza dessas não passa de 3 em mhos! Elas também contém fósseis! Uma mistura de alófano com nacrite! Poderiam ser astrofilita ou opala! Mas a densidade relativa apesar de ter variações, o valor mais encontrado é de 2.43. Após submeter essas rochas em lapidação, o resultado é de um belíssimo visual! Esse belo visual, eu o atribuo ao material do fitoplâncton talvez de um mar pré existente!
Mas concomitante a esse estudo, fui imbuído a estudar uma outra rocha que era encontrada nas proximidades! Porém esta rocha é mais dura(7 em mhos) e mais cristalina! E pelo fato de ter cores púrpura, avermelhadas, brancas, incolores, eu pensei ser Cordierita. Os geólogos daqui as classificaram como quartzo! Pois após lapidadas o índice de refração, o sinal óptico(+) são muito parecidos com o quartzo! Porém elas são pleocroicas, de densidade relativa variável (2,51 a 2,72), soltam um material escuro quando lapidadas em disco fino(800). Contém fósseis de seres microscópios evidenciados em objetiva de 10 e 40x! Consigo ainda identificar clivagem, bolinhas(Melanoflogita) e cristais hexagonais achatados(azuis, pretos, vermelhos, amarelados)! Também prováveis cristais de almarudita!
Sendo assim, concluo que as minhas rochas não são Cordierita, mas sim de vários minerais do grupo Osumilite!



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