Dark blackish blue transparent stone

[beau7johnson]

I found this while digging a creek bed in Central Kansas Today. There is no way it is obsidian or flint by its color and transparency but I'm not too sure what forms the cubical fracture patterns. When I first discovered these pieces it was a single pane of cubical glass like dark gray stone. it only became transparent and blueish at the second glance. Anyone with possibilities of what this may be?

 

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[TheCannonballGuy]

Perhaps Blue Fluorite in "cubic-crystalline" form.

https://en.wikipedia.org/wiki/Fluorite

The photo below came from the "Fluorite Auctions" photos at the minerals.net Fluorite webpage:
Fluorite: The mineral fluorite information and pictures

 

[DizzyDigger]

I'd vote for black Obsidian.

 

[beau7johnson]

 

[Goldfinger450]

I'm not sure, does it fracture conchoidal or curved on the edges? if so it may be Obsidian. Without better pics that is the best I can do.

 

[DizzyDigger]

Does this change your mind any Dizzy?

Honestly..no. Agree with GF450 that we need better pics to make
any serious determination. I downloaded your pic and tried to improve
it a bit, but struck out. A pic taken in natural daylight would be best.

 

[diggummup]

Looks like a piece of broken tempered glass to me. Regardless of the color.

 

[Clay Diggins]

Broken tinted safety glass. Probably from a trailer or RV.

 

[TheCannonballGuy]

The new photo shows the form isn't precisely cubic, but only roughly so. Therefore I withdraw my previous guess, and agree with fractured dark-blue tinted tempered glass, as Clay Diggins says.