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I hope I'm not posting too much. This piece was given to my mom years ago so I have no idea where it came from. It is heavy for it's size. Feels like hematite but it has this strange embedded stone in it.

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7 hours ago, wet/dry washer said:

augite, color, brown green; black; green-black; brown purplish brown.

cleavage- distinct/good on (110) degrees.

streak- greenish gray, light to dark brown.

hardness- 5-6.5

What D_day said then? botryoidal hematite? I googled that and it does look like it. Like someone carved away at it to expose the inside.

Edited by Cheshirecat
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Use a file.

File some shavings onto s piece of white paper. Smear it with your finger. All a streak test does it determine the color of a particular minerals powder. I suspect it will be reddish brown.

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1 hour ago, Cheshirecat said:

What D_day said then? botryoidal hematite? I googled that and it does look like it. Like someone carved away at it to expose the inside.

Doesn’t look like anyone’s carved it to me. Looks like it was broken by geological pressures and lots of time. If my ID is correct, the stone in the middle is a remnant of whatever it formed on. It could be other minerals too. If you do a streak test and the streak is brownish black, then it’s probably psilomelane. 

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