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User:Palapala

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Welcome

2024-06-28 Friday 22:46

The first minute of the rest of your life...

Some of my background you'll be able to find

on my home page.
— 2004-01-28 —
I do not attend on a day-by-day basis, as my job does not allow this.
That doesn't imply that I will not stay with things I've started...

And, as Anthere has suggested: "I like you".



Fumarole mineral
Fumarole minerals are minerals that are deposited by fumarole exhalations. They form when gases and compounds desublimate or precipitate out of condensates, forming mineral deposits. They are mostly associated with volcanoes (as volcanic sublimate or fumarolic sublimate), following deposition from volcanic gas during an eruption or discharge from a volcanic vent or fumarole, but have been encountered on burning coal deposits as well. They can be black or multicoloured and are often unstable upon exposure to the atmosphere. This natural-color photomicrograph of fumarole minerals from Mutnovsky, a volcano on the Kamchatka Peninsula in Russia, was taken using a scanning electron microscope. Yellow and red crystals of thallium(I) iodide are visible, with a gradual transition between the two polymorphs. The crystals are located on a substrate of altered rock. This image is 700 micrometres (0.028 in) across on the long side.Photograph credit: Mikhail Zelensky


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