Green glass

[toiv0]

I know this is not a rock but slag glass question. I was at a friends place last week and we were looking at rocks and artifacts. He pulled out this chunk of green glass  with two white nodules inside and one broken off on the back.  We're both kind of stumped at what the white nodules are. He lives on the North Shore of Lake Superior. Mean time I helping someone in Janesville WI this week and was checking  where some water could be coming in to wet the carpet and I ran across a green slag paper weight some one knapped a spear head out of. It has a white nodule in it. Can't make this stuff up. What are the chances. 
Which comes down to the question.  Any ideas on the white nodules?  His glass is about fist size. Spear head is the last two pics.jamesp

[dreamrocks]

Feb 8, 2020 18:58:11 GMT -5 toiv0 said:

I know this is not a rock but slag glass question. I was at a friends place last week and we were looking at rocks and artifacts. He pulled out this chunk of green glass  with two white nodules inside and one broken off on the back.  We're both kind of stumped at what the white nodules are. He lives on the North Shore of Lake Superior. Mean time I helping someone in Janesville WI this week and was checking  where some water could be coming in to wet the carpet and I ran across a green slag paper weight some one knapped a spear head out of. It has a white nodule in it. Can't make this stuff up. What are the chances. 
Which comes down to the question.  Any ideas on the white nodules?  His glass is about fist size. Spear head is the last two pics.jamesp

Very cool spear head even if it is glass

[hummingbirdstones]

The only thing I can think of is that it may be from copper smelting.

[amygdule]

A long time ago I heard that the glass with the white spheres in it was from a Coca-Cola factory that burned down.
I have a piece around here myself.

[RocksInNJ]

Wow that’s so weird. I just found a big round chunk of green glass yesterday, but it doesn’t have any of the white stuff on it.

[jamesp]

Got any nickel mines close by toiv0 ? White specks and chunks in slag glass is usually a sulfide.
Nickel sulfide is used to make figures to be cast in glass without cracking the glass.
Not many materials can be cast in glass without cracking it.
Chances are if it is white and it did not crack the glass it is a sulfide.

sulfide marbles



Nickel sulfide reaps havoc in tempered glass. Causes spontaneous failure.



butterfly fracture in China



butterfly in France



another

[jamesp]

I have no idea what this article is talking about. I guess we get bombarded with sulfides from space. RocksInNJ ??

"Glass with embedded metal and sulfides (GEMS) are tiny spheroids in cosmic dust particles with bulk compositions that are approximately chondritic. They form the building blocks of anhydrous interplanetary dust particles (IDPs) in general, and cometary IDPs, in particular. Their compositions, mineralogy and petrography appear to have been shaped by exposure to ionizing radiation. Since the exposure occurred prior to the accretion of cometary IDPs, and therefore comets themselves, GEMS are likely either solar nebula or presolar interstellar grains. The properties of GEMS (size, shape, mineralogy) bear a strong resemblance to those of interstellar silicate grains as inferred from astronomical observations.[fn 1]"

The plot thickens:

"A Chondrule is a round grain found in a chondrite. Chondrules form as molten or partially molten droplets in space before being accreted to their parent asteroids. Because chondrites represent one of the oldest solid materials within the Solar System and are believed to be the building blocks of the planetary system, it follows that an understanding of the formation of chondrules is important to understand the initial development of the planetary system."



I'm tellin ya, RocksInNJ is behind all this.

[RocksInNJ]

Feb 9, 2020 5:38:45 GMT -5 jamesp said:

I have no idea what this article is talking about. I guess we get bombarded with sulfides from space. RocksInNJ ??

"Glass with embedded metal and sulfides (GEMS) are tiny spheroids in cosmic dust particles with bulk compositions that are approximately chondritic. They form the building blocks of anhydrous interplanetary dust particles (IDPs) in general, and cometary IDPs, in particular. Their compositions, mineralogy and petrography appear to have been shaped by exposure to ionizing radiation. Since the exposure occurred prior to the accretion of cometary IDPs, and therefore comets themselves, GEMS are likely either solar nebula or presolar interstellar grains. The properties of GEMS (size, shape, mineralogy) bear a strong resemblance to those of interstellar silicate grains as inferred from astronomical observations.[fn 1]"

The plot thickens:

"A Chondrule is a round grain found in a chondrite. Chondrules form as molten or partially molten droplets in space before being accreted to their parent asteroids. Because chondrites represent one of the oldest solid materials within the Solar System and are believed to be the building blocks of the planetary system, it follows that an understanding of the formation of chondrules is important to understand the initial development of the planetary system."



I'm tellin ya, RocksInNJ is behind all this.

And that’s just the beginning. 😈

[hummingbirdstones]

[toiv0]

Feb 9, 2020 11:02:06 GMT -5 hummingbirdstones said:

I know

[amygdule]

Here's a piece of the Coca-Cola slag. The spheroids are formed from radiating fibers of some sort.

[einholt]

I have a handful of old green coke glasses and a couple of the old bottles. I wonder if they would melt down to something like that?

[toiv0]

Feb 9, 2020 17:47:16 GMT -5 amygdule said:

Here's a piece of the Coca-Cola slag. The spheroids are formed from radiating fibers of some sort.

I tried to google the coca cola glass and got no where. Weird so it must be true.

[RocksInNJ]

Here’s the chunk I found behind the old glass factory next door the other day.

[knave]

Feb 10, 2020 9:02:43 GMT -5 RocksInNJ said:

Here’s the chunk I found behind the old glass factory next door the other day.

HOOPY!!

[toiv0]

Cool,with the back light can't see if it has the white spheres

[amygdule]

Feb 9, 2020 22:38:49 GMT -5 toiv0 said:

Feb 9, 2020 17:47:16 GMT -5 amygdule said:

Here's a piece of the Coca-Cola slag. The spheroids are formed from radiating fibers of some sort.

I tried to google the coca cola glass and got no where. Weird so it must be true.

I could only find one reference to that glass, which was an item listed on Ebay.

EXTREMELY RARE COCA COLA GLASS SPHERE

A rock dealer friend told me that the glass was from a Coca-Cola plant in Texas that burned down in 1950. Apparently all the molten glass
ran down into the basement where it was left to cool down. They had such a problem with trespassers taking the glass, that they ended up bulldozing the pit to prevent more theft. A bunch of the glass ended up on the lapidary market for a while.

[RocksInNJ]

Feb 10, 2020 12:22:09 GMT -5 toiv0 said:

Cool,with the back light can't see if it has the white spheres

Here it is without the light. It doesn’t have the spheres and am not sure what the white and brown stuff is on the one side. Probably a sulfide of some sorts, as jamesp mentioned above.

[jamesp]

Feb 9, 2020 17:47:16 GMT -5 amygdule said:

Here's a piece of the Coca-Cola slag. The spheroids are formed from radiating fibers of some sort.

That looks like a classic sulphide spheroid amygdule. Looks like classic Coca Cola colored glass too.
Synthetic opal is another compound that has properties that allow it to be reliably melted into glass.
You avatar looks like glass with opal fused into it...

[jamesp]

Looks like sulfide inclusions RocksInNJ. Sweet find.