Expert opinions needed.

[muledeericeberg]

i acquired a few heavy dark crusted rocks in CO a little over a year ago. Density average 7 g/cm3. hardness about 6.5-7 , silver streak.






i will post more images of odd minerals i have seen inside a broken rock.

Thank You All for Your Time,
Mark

 

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[muledeericeberg]

More Minerals

The first few images are of a quartz crystal embedded almost a 1/2 inch into the surface of the rock.
under the microscope you can see fracture lines decorated with impurities as well as planar deformation features.





this next unidentified mineral shows similar fracturing but was not associated with the first quartz crystal, although it still could be quartz or a polymorph.



this last one i couldnt get a good shot of but it had a greenish blue crystal with a redish orange one and some weird metal lines in it.


Thanks again for All Your Time,
Mark

 

[Terry Soloman]

Hi Mark! While I believe your specimens are terrestrial, my advice - as always, is to have them looked at by a geologist at your local college or university.

 

[galenrog]

Very clearly a meteorwrong.

I would suggest that you pick up a few guidebooks. These will help if you have a genuine interest in meteorites.

Time for more coffee.

 

[smokeythecat]

Not a meteorite, but due to your location it may contain silver in one of it's various forms. Only way to know for sure is to have it tested. John Attard in San Diego has that service available, I have used him before. You can look for him on the net.