Adam:
It has some resemblance to a hematite concretion:
http://meteorites.wustl.edu/id/concretions.htm
The color is right, but the texture is not.
Do a streak test:
http://meteorites.wustl.edu/id/streak.htm
Randy
At 12:14 06-04-09 Monday, you wrote:
Dear List Members,
We went on a Mojave Desert hunt this weekend where I found this
weird stone. My questions is, does anybody have a clue to what type
of rock this may be?
The reason I am asking the list is that several hunters have
thousands of hours in the Mojave whereas I only have a couple of
hundred and they may have seen something like it before. It is very
dense, has surface contraction cracks and is not attracted to a
powerful magnet at all. It does look like a crust but not like
anything I have ever seen before. I have never observed a gray
crust on a meteorite is what is convincing me that it is
terrestrial. I have never seen surface contraction cracks on a
terrestrial rock that did not penetrate the whole stone. We must
have hiked 20 miles and I did not come across anything similar.
We thought it was a meteorite when we first saw it in situ but now
are not convinced. I do not want to cut it if it is not a meteorite
because it would be one of the best wrongs I have ever seen. On the
other hand, if there is any chance whatsoever that it could be the
first North American Lunar, I would cut it in a heartbeat. Maybe, I
am just dreaming but I am convinced that within the next 10 years,
some lucky hunter will find one.
Images of the stone:
Image 1
http://themeteoritesite.com/Achondrite-1.jpg
Image 2
http://themeteoritesite.com/Achondrite-2.jpg
Any input would be greatly appreciated.
Best Regards,
Adam
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