Find of a lifetime(Almost)-Heartbreaker Axe

[tchaire]

Got a call from my brother(non-artifact hunter, but quickly becoming addicted) today letting me know he had just
talked to a farmer friend of ours, who while planting a field came across a celt (beautiful) and a hammer. To make
a long story short, he offered to show us where the field was and so we took a look tonight. Conditions were
very poor for looking(needs a good rain), but we found a few pottery shards and a couple of scrapers after about
an hour of searching....and then the axe. It's hard to take my eyes off it...the material is incredible. It's a shame
that it's broken, otherwise it would of been truly the find of a lifetime. Does anyone know what type of rock
this is?

Thanks for looking..

T.

 

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[jeff a]

porphyry, very nice

 

[pickaway]

Still a nice find in my book keep an eye out for the other part...

 

[ohio]

Yup Jeff is right. Porphry for sure. I believe the "splotches" are called phenocrysts. That is an unbelievable find.
Chuck

 

[tchaire]

Thanks for the info. I'll definitely keep an eye out for the other part...Should be pretty easy to identify if it is out there.
This site has great potential.

T.

 

[abarnard]

Porphyritic igneous rock for sure. I am almost positive the type or rock is andesite, with very large phenocrysts of feldspar, and the black color in the rest of the artifact comes from hornblende, olivine, pyroxene, and or bitotite mica. It cooled at the earths surface, not under the ground (intrusive). It doesn't look vasicular, so It probably wasn't launched out of a volcano. There must be some geology around where you are hunting. What State are you hunting in

 

[tchaire]

Wow abarnard...What a geology lesson. Thanks for the info. I found it in Minnesota, along the Red River. The stone
is greenish in color.

 

[HEADHUNTER]

Really nice find..I would be happy with a broken axe.

 

[Tnmountains]

Thatis beautiful.I hope the field gives you years of many fine treasures. Congrats to you sir. I learned a lot from your post.
Regards,
TnMountains

 

[Flintfinder of Mo.]

Still a great find, congrats. John