What mineral is this inside of this geode?

[diggummup]

I'm intersted in the black material. Is it possible to tell with these photos?

 

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[Grebo]

Maybe Stibnite?

 

[Tuberale]

I wouldn't call this a geode. I see no central hollow area, only a mass of crystals.

There do appear to be tiny thin crystals, possibly rutile? They don't look black to me, more dark red.

 

[diggummup]

I wouldn't call this a geode. I see no central hollow area, only a mass of crystals.

There do appear to be tiny thin crystals, possibly rutile? They don't look black to me, more dark red.

It was a semi-round stone, this is what the center revealed when broken open. Is that not a geode?
They are definitely coal black, prob. the lighting on my camera.

 

[DigginThePast]

Black Tourmaline comes to mind. Do you know the source?

 

[diggummup]

Black Tourmaline comes to mind. Do you know the source?

She said it came from Tennessee.

 

[Eu_citzen]

Amphibole (Aktinolite, tremolite), Pyroxene and tourmaline come to mind.

 

[rockhound]

Tourmaline. rockhound

 

[diggummup]

Thanks for the replies. I'll go with black tourmaline.