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MISSING: 9.04 kilogram Sikhote-Alin shrapnel individual   More Info


 
NWA XXX   contributed by Phil Morgan   MetBul Link


Roll Overs:     #1   #2    


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View all entries for   Meteorite (55)   Contributor (15)


7.1 grams.   Unclassified

TKW 16.1 grams. Fall not observed.


Phil writes:
I cut this small stone a few weeks ago and didnít strike me as anything particularly interesting. However, when cleaning off the workbench the other night, the light was just right and one of the metal grains caught my eye. Looks like copper.

According to Alan Rubin in the paper "Metallic Copper in Ordinary Chondrites":
Metallic copper of moderately high purity occurs in at least 66% of ordinary Chondrites (OC) as heterogeneously distributed, small (typically < 20 μm) rounded to irregular grains.

Although the presence of copper may not be that unusual, I believe the size of the grain must be.

The second picture is at 20x magnification. I forgot to turn off the flash on the camera but it really brought out the color of the metal.


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This Month

جاوید
 10/18/2021 5:33:08 AM
سلام من هم شهاب سنگ پیدا کردم که فلز مس داشت
Andreas Ruh
 10/18/2019 1:58:12 AM
I have only seen copper grains in meteorites by microscopy.
Ed Tindell
 10/17/2019 11:41:00 AM
I have not seen copper grains in meteorites but I have seen similar grains in some agate specimens. I had not thought of copper in meteorites until now. Very interesting.
Kenneth Regelman
 10/17/2019 7:44:41 AM
I agree it looks like copper !! I have seen this a few times in cutting specimens .
Robert Haag
 10/17/2019 7:32:38 AM
cool. good eye In all my cutting of OC I have never seen a copper grain
Twink Monrad
 10/17/2019 7:10:17 AM
Interesting! I live in Arizona commnonly called the copper state!
Jesper
 10/17/2019 4:57:13 AM
Yes it looks like copper, thanks for sharing....
 

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