Unknown Mineral in Unknown Stone Matrix

[TJE]

This stone I discovered on The Bruce Peninsula (between Lake Huron and Georgian Bay). It was in the wash-out of a natural freshwater spring. Heavy for its size, After cleaning I noticed 3 little silvery protrusions. When magnified they're smooth but look melted (wavy)? After a search on the web the only pics of raw minerals that match is platinum.
As for the interior..I halved the stone, then dampened the cut sides. Anyone have any idea?
Sorry about the close-up pics, I've not a proper camera. :/

 

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[TJE]

What, are the dark small holes, in the broken matrix? (magnetic attr.?) Do other fragments have a magnetic attr.? (little)
Would not the Abee Meteorite Matrix look a little like yours? (cutten face) Just like that.
W.T.F

Hello W.T.F,
The dark black spots in the raw broken matrix appear 'glassy'...but they are not 'holes'.
I have a quite powerful 'Earth Magnet'...but I can't sense any magnetism anywhere.
Thanks, will check the "Abee metoerite.

 

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[TJE]

What, are the dark small holes, in the broken matrix? (magnetic attr.?) Do other fragments have a magnetic attr.? (little)
Would not the Abee Meteorite Matrix look a little like yours? (cutten face) Just like that.
W.T.F

Checked 'Abee', yes some familiar looks but it holds alot of iron I believe.
This stone has since cutting it a year or so ago, has 'slowly' shown two spots of rust (photos)
that is all I see for now of iron?
And since, closer 10x magnified study in one location appox. 1/2" inside/below the surface...actually found a tiny 'pocket' with gold/brass coloring
P.S. the 'darker cut face' photo was dampened with water.

 

[W.T.F]

Hello as it is a melt rock, you need to choose the good fragment, for analyses. Do you think it matters? Good luck .W.T.F

 

[Eu_citzen]

I appreciate you taking the time out of your day to test this unknown mineral. I'm usually really good at determining minerals. It was my forte back in college. Not really sure what you have. But I don't think it's galena. If it didn't mark the paper you don't have graphite. It might be rutile. There is a slight chance it could be magnetite, very slim chance. But I just don't know.

Good Luck and Happy Hunting,

Brian T. Booth

Hey Brian, what do you think of Chalcocite? I do imagine that being a possibility.
Seen some behave similarly to what he described.

 

[Brian T. Booth]

Hey Brian, what do you think of Chalcocite? I do imagine that being a possibility.
Seen some behave similarly to what he described.

Hey EU_citzen,

Yeah, it might be Chalcocite. The hardness fits the description. The fracture is conchoidal.

I'm intrigued on the dots in the rock.....looks like garnet.

 

[nomad1]

If the rock is different from the rock formation in the area it could be glacial float. The rock in photo #1 looks like breccia. Notice the angular pieces that make up the whole rock. This is possibly from being shattered during volcanic activity and then re-cemented by molten rock. Remember the area you are in is part of the Canadian shield which was heavily glaciated during the pliestocene so what you have may have come from an area much further north than where you found it.

 

[Brian T. Booth]

If the rock is different from the rock formation in the area it could be glacial float. The rock in photo #1 looks like breccia. Notice the angular pieces that make up the whole rock. This is possibly from being shattered during volcanic activity and then re-cemented by molten rock. Remember the area you are in is part of the Canadian shield which was heavily glaciated during the pliestocene so what you have may have come from an area much further north than where you found it.

It almost looks kimberlitic too me. That would explain the garnet looking mineral that you see in the cut slice. But if it were kimberlitic then it should be weathered more.

 

[TJE]

Hi fellas, it actually does look weather/water worn...also, who knows how long it laid in that natural freshwater spring basin (literally 2-3 steps away from a lake) running over it!
The info on these 'Sudbury impact sites' may be related?
Not too far from me (North-across Georgian Bay)!
Brian, kimberlite mentioned may be right.