Got A Rock you Want Identified? Post it here! gimme a good picture or 3 or 4!

[Nappy701]

 

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[gesa5]

Found in Southeast Missouri

 

[lexx]

Seasons greetings everyone.
I am a newbie here and just came across this interesting thread, so decided to post a few pics I took of this rock I found over 20 years ago.

I am no expert so hoping you guys could help me out finding out what it may be. I can't seen to even remember where I picket it up, but have it on my desk and simply enjoy looking at those silver colored flakes all over it.

 

[dr1ftd1gger]

Not sure if this is a rock. It didnt ping my propointer or pull my magnet. I Kinda think it looks like a bird.

 

[Eu_citzen]

Gesa5, porphyry I believe.

Lexx, Diabase would be my best guess.

dr1ftd1gger, Not sure about yours. My first thought was slag. I think you'd be better off showing it to someone in person.

 

[EYEROCK]

Bannerstone? View attachment 1248351. View attachment 1248352

 

[Nappy701]

Can someone plz tell me what this is? I was thinking maybe blue sapphire thanks.....

 

[Eu_citzen]

Nappy, could be quartz as well. If you have a known piece of quartz, do a hardness test. (can one scratch the other?)

 

[arizau]

The parallel lines of the indentation indicate that whatever it is, it was man caused and is probably slag as was mentioned above.

 

[arizau]

dr1d1gger.....The parallel lines of the indentation indicate that whatever it is, it was man caused and is probably slag as was mentioned above.

 

[GrizzlyGremlin]

Thanks to all taking Dusted's place. You guys are great! Here are a few that I would love to have peeked at. This is from the Central City district in Co.
Now my biggest conundrum is identifying the very silvery pyrite. I'm encountering various pyrites. The chalcopyrite is fairly easy to identify, but this other silver pyrite is tough. It does have a slight brassy hue, but still striated prism, and block like structures. There are Telluride's in some of the mines, but Telluride's won't be striated right?
I would think this is mostly arsenopyrite, but the reports from the mines don't specify arsenopyrite as an abundant mineral.
Thanks again TN!

 

[Eu_citzen]

Impossible to say from pics. But if you are finding chalcopyrite, keep an eye out for chalcocite.

Silvery "pyrite" is usually "marcasite", or a low temperature variation of pyrite.

 

[human29]

 

[biliana]

Hi, I've found this on my way today. Could you please tell me what could it be ?






Thank you.

 

[GrizzlyGremlin]

Are all those pics of the same rock? Try one in sunlight if possible.

 

[human29]

View attachment 1256628View attachment 1256629

Anyone have a clue on these?

 

[Clay Diggins]

Anyone have a clue on these?

Welcome to treasurenet!

All three are melted glass human29. Probably dross from a glassworks. Pretty though.

 

[Ragnor]

Well now, this material is from near mineral washington, however very similar material has now been recovered from Mossyrock, Wa. area.
In mineral this material is found as large masses up to the size of small boulders. While in mossyrock it occures as what appears to be a replacement material in petrified wood. This particular piece appears to have a fusion crust much like that of materials found in the blast area of Mt. St Helens, though it is from much nearer Mt Ranier.
The cut surface will take a high polish, but immediatly oxidizes or dulls when exposed to water.

 

[biliana]

thanks. Here is another one


If it's any help I conducted the following tests:
1. Tried to melt it (in case it had lead impurities ~1300 C) - no result
2. Tested for magnetism - none itself, neither attracted to magnets

 

[GrizzlyGremlin]

Well now, this material is from near mineral washington, however very similar material has now been recovered from Mossyrock, Wa. area.
In mineral this material is found as large masses up to the size of small boulders. While in mossyrock it occures as what appears to be a replacement material in petrified wood. This particular piece appears to have a fusion crust much like that of materials found in the blast area of Mt. St Helens, though it is from much nearer Mt Ranier.
The cut surface will take a high polish, but immediatly oxidizes or dulls when exposed to water.


View attachment 1257493
View attachment 1257494View attachment 1257497
View attachment 1257498View attachment 1257495
View attachment 1257499

So how hard is that piece? If you take a hammer to it does it splinter into shards?
Here in Colo we have mineralized Anthracite that looks very similar.