Birdstone Illinois

[Sunny Side]

The position of the beak is unusual for type as well as the location.

 

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[Tnmountains]

I can understand the term popeye bird stone looking at that. What is the material?

 

[Sunny Side]

It’s made of porphyry wirey granite. It’s my favorite lithic material. I collect as much as I can find of it.

 

[southfork]

Another great artifact all shown seem to be Museum quality pieces thanks for showing .

 

[gilmerman]

So when was this found and by whom?

 

[Sunny Side]

Your

 

[Sunny Side]

So when was this found and by whom?

I don’t know who found it and when. I really wish I could have been there.

 

[ToddsPoint]

I think the term "wiry granite" is a collector term and not a geological term. I can find no reference to "wirey or wiry" granite on any geological websites. In commercial applications, many non granitic rocks are classified as "granite". Unless a rock has 3 simple minerals, quartz, mica, and feldspar, it's not really granite. I would also speculate your birdstone is made from fine grained diabase porphyry, not granite, which has larger grains. Gary