Strange Stones found in Colorado

[muledeericeberg]

Southeast of Colorado Springs and don't look like anything I've seen. Would like some help identifying.

This one is about fist sized and got washed and buffed up the best I could.





Density is 8 g/cm3 plus or minus 1
Hardness 6<8
Streak Silver/Grey with something scratching the porcelain

 

Amazon Forum Fav 👍

Agony and Death on a Gold Rush Steamer: The Disastrous Sinking of the Side-Wheeler Yankee Blade - Grab it through Amazon!

[smokeythecat]

Looks like rhyolite (the grey) with garnet inclusions.

 

[muledeericeberg]

I do agree with the silication but a density of pushing 10 grams/cm3 ?
It has enough metal content to make a magnet stick as well.





This is one whole side of that same stone looking completely different.

 

[SkaBa]

Slag?

 

[muledeericeberg]

Those last photos are rather provocative right?
It's too dense and solid to be slag. It has no bubbles just this odd melted looking side with weird lines and cracks.







These are pictures of a separate stone I cracked open and this one too showed an odd blue/red glass surrounded by more metal. This one showed a more developed blue spot in an almost cubic shape in an alternating brecciated structure with a bit more color because I had broken it open and not just simply shined

 

[Back-of-the-boat]

Could be silver ore, Google silver ore.

 

[oldsilver]

iolite deposit...

 

[muledeericeberg]

My original thoughts were tellurides and cobaltite but there's not a single quartz or feldspar in the entire composition. Just colored glass and metal. The metal is brittle too. But so tough it won't break.

Nothing is tarnishing either.

I found about 20 stones in a 100 yard radius all heavy and dark crusted.





With tiny jewels in them and attached to the outside.

Thanks for the help too guys

 

[muledeericeberg]

That smaller black stone was the first one I found because I noticed how dark it was and thought that was odd. Then I picked it up and was shocked by how heavy it was. I took it home, knicked the tip and immediately revealed metal. I later found that largest stone that didn't have much to any black on it at all but more of a silvery blue glassy film.

I don't become stumped too often but the shear contrast in certain stones is mind boggling. I have only sent pictures of 4 specimen. These things get weird

 

[Coach Stack]

There isn't much mining SE of Colo Springs except for around the old town of Francisville sp?) near the Coral Bluffs. I will send the picture to a mineral guy I know here he might be able to help.

 

[muledeericeberg]

Thanks a lot Coach.

This next one I cracked open I finally got pieced together.




Of course instead of this one being mostly metallic it had a lot of carbon or graphite with the glass and metal.