Monthly Archives: November 2015

ZAFFIRO – SAPPHIRE

Categoria: Pietre PrezioseSottoCategoria: Pietre PrezioseCommento: durezza, colore ed abito sono di solito sufficienti al riconoscimento di questo importantissimo minerale. Bisogna fare attenzione, a volte gioiellieri ed addetti del settore usano i termini zaffiro giallo, zaffiro bianco etc., ricordiamo che il … Continue reading

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YUKSPORITE

Categoria: MineraliSottoCategoria: SilicatiCommento: la provenienza e il colore su tonalità rosa-giallastre sono le uniche armi per riconoscere la yuksporite, minerale amato essenzialmente dai collezionisti di specie rare, ma sempre apprezzabile per il suo bel colore Voto: 6 Minerali.it: Pietre

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Earth’s first ecosystems were more complex than previously thought

Image of a computer simulation of water flow around a 3-D model of Tribrachidium The international team of researchers from Canada, the UK and the USA, including Dr Imran Rahman from the University of Bristol, UK studied fossils of an … Continue reading

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Re: Collection of Gerhard Brandstetter

Thank you, Roger! Aeschynite-(Y) is not the only rare Mineral here. I have two big boxes full of micros waiting for photos….. The quarries of Lohning and nearby Kaiserer are famous for rarities! A large article about it was in … Continue reading

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WOLFRAMITE

Categoria: MineraliSottoCategoria: SolfatiCommento: si riconosce grazie a abito, colore, densità, sfaldatura e lucentezza. I campioni più belli sono di interesse mineralogico per i collezionisti WOLFRAMITE Voto: 3 Minerali.it: Pietre

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Earth’s first ecosystems were more complex than previously thought, study finds

Computer simulations have allowed scientists to work out how a puzzling 555-million-year-old organism with no known modern relatives fed, revealing that some of the first large, complex organisms on Earth formed ecosystems that were much more complex than previously thought. … Continue reading

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Re: Collection of Gerhard Brandstetter

Hi Gerhard, Sure, I had fun with your last post: very nice specimens and stunning photos. There are a lot of oxides in this quarry. I don’t know Aeschynite-(Y). What program do you use to complete the stacking? Roger. FMF … Continue reading

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WHITLOCKITE

Categoria: MineraliSottoCategoria: FosfatiCommento: si riconosce solo tramite microscopio ottico ed analisi alla microsonda elettronica; raro e con abito ben formato, la whitlockite é il classico minerale per i collezionisti di sistematica; personalmente mi affascina perché si trova spesso in campioni … Continue reading

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Mystery of how snakes lost their legs solved by reptile fossil

Fresh analysis of a reptile fossil is helping scientists solve an evolutionary puzzle — how snakes lost their limbs. The findings show snakes did not lose their limbs in order to live in the sea, as was previously suggested. Paleontology … Continue reading

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Stretchy slabs found in the deep Earth

 A 3-D image of the Nazca slab subduction. Credit: University of Southampton A new study suggests that the common belief that the Earth’s rigid tectonic plates stay strong when they slide under another plate, known as subduction, may not be … Continue reading

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