Prophyry Lithics

[Saguache]

Since a lot of you folks are from the eastern half of the US I'm wondering if you see prophyry stone used in artifacts,
this white piece come from SW New Mex and is a nice jasper with the intrusions.

 

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[Tdog]

I rarely see celts, axes, discoidals & banner stones made from it.

 

[The Grim Reaper]

I lost all of my pictures a while back but here's a link to a Granite Porphyry Axe I found in 2008.

http://www.treasurenet.com/forums/n...08378-found-killer-today-3-4-grooved-axe.html

 

[smokeythecat]

Not so much here in Maryland. Our lithic materials in order of abundance for points are white "sugar" quartz, the kind you can't see through, argellite, rhyolite, black Delaware River flint, and an occasional piece of Onondaga chert or Flint Ridge Ohio Flint, with an occasional piece of Vera Cruz, Iron Hill or Harford County Jasper thrown in.

The axes are mainly made of granite or quartz river cobbles, celts and bannerstones from Whiteford, Maryland, slate, steatite (soapstone) bowls from Dublin, Maryland steatite.

 

[ToddsPoint]

Porphyry is found in the Midwestern states and was brought down from Canada by the WI glacier. Very common in the glacial till here in Cent. IL. Artifacts were made from it but are not that common. I've seen banners, celts and axes, and a boat stone found locally made from porphyry. Beautiful green with yellow spots when new, some of it has a bit of iron and will turn yellowish with age. That's why the don't make tombstones out of porphyry. Gary

 

[tchaire]

Broken axe. Found in the Red River Valley of Minnesota about 10 years ago.

http://www.treasurenet.com/forums/n...48-find-lifetime-almost-heartbreaker-axe.html