Mystery Rock

[Earth-X]

Hi All, I'm new to this forum. Looking for some input on identifying this egg like multi layered rock that I found in a glacial outwash/ esker deposit in northwestern ontario near the headwaters of a main watershed that drains to Lake Superior. The inner brown colour material breaks apart very easily leaving behind a black, brown and green coloured hard mineral that leaves a very slight greasy residue on your fingers. This mineral is cubic in shape with one dominant and noticeable flat side. Any suggestions on what this may be?

 

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[vpnavy]

Welcome Aboard Earth-X! You didn't list your state (or country) in your profile. So, you might consider jumping over to Sub-Forum: Select Your Area.... and selecting location information (i.e., clubs, hunts, finds, legends, maps, etc.) directly related to your state (or country). You might also consider adding your state (or country) to your displayed profile (SETTINGS -> EDIT PROFILE) so if you ask a question, etc. - members may have more success helping you (your location may help etc.)...

I moved ya from HELP! over to ROCKS/GEMS for more exposure.

NOTE: Forum HELP! Description: This section contains guides tutorials on how to use the new TreasureNet.com software.