Naked Science Forum

Non Life Sciences => Geology, Palaeontology & Archaeology => Topic started by: Antiquarian on 04/04/2016 19:39:37

Title: Is this fusion crust?
Post by: Antiquarian on 04/04/2016 19:39:37

Hello,

I am new here, i guess i have some meteorites, but not expert as you people are here.

I just want to know if these images(meteorite) has fusion crust? Or just meteor wrong?

AQ

Title: Re: Is this fusion crust?
Post by: Antiquarian on 05/04/2016 20:38:40

All right...Then this could be the fusion crust.

Title: Re: Is this fusion crust?
Post by: RD on 06/04/2016 05:30:36

Quote from: Antiquarian on 05/04/2016 20:38:40

All right...Then this could be the fusion crust.

Meteorites don't have layers / bands with different stripes of mineral types as they did not form in a strong gravitational field. Your photo "6" has parallel layers & parallel fractures ...

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Quote from: meteorites.wustl.edu

If it's got layers, laminations, or any kind of planar or parallel linear features, then it's definitely not a meteorite ... If it's got veins, particularly ones that stick out or appear to be planar, then it's not a meteorite ...

http://meteorites.wustl.edu/lunar/realities.htm

Title: Re: Is this fusion crust?
Post by: Antiquarian on 06/04/2016 13:06:59

Thank you RD for correcting me.

This might be fusion crust then....

Title: Re: Is this fusion crust?
Post by: Ophiolite on 07/04/2016 14:37:19

It looks like a piece of weathered granite to me. A close up with better focus would help.

Title: Re: Is this fusion crust?
Post by: Antiquarian on 07/04/2016 15:59:11

Thank you  Ophiolite,


If you click the picture it should enlarge for a good close up.

Title: Re: Is this fusion crust?
Post by: Ophiolite on 08/04/2016 12:15:06

Quote from: Antiquarian on 07/04/2016 15:59:11

Thank you  Ophiolite,


If you click the picture it should enlarge for a good close up.

Geologists are very fussy. I had already looked at the enlarged version. When one is accustomed to holding the rock in ones hand and looking through a hand lens that doesn't quite make it.  I think I am seeing orthoclase, biotite and quartz, which is why I suggested granite, but without that closer look I wouldn't give a 100% answer. Nevertheless, I am pretty sure it is neither fusion crust, nor meteorite. It is, however, a nice hand specimen of what is probably a granite.

Title: Re: Is this fusion crust?
Post by: Antiquarian on 08/04/2016 13:00:26

First i must apologize for not posting an appropriate image of the same above stone to the relevant question, yes it sure is igneous rock.

Does these igneous granite minerals have any sort of metal in them? Or if a same granite or gabbro like stone is displaying mixed colors like gold.silver,blue/green sometimes orange all together, is that an igneous phenomena?

I cannot post any more images here in this thread, i cannot show how colors are displayed in some igneous looking rocks when just expose to daylight.