Huge Obsidian Spearhead found in the City.

[bigcaddy64]

I was just handed this huge obsidian spearhead by a friend who found it on a project in downtown Los Angeles

Is there any way to attribute this to any particular group of native Americans? I have zero knowledge on the subject so if there is any way to tell, id like to know and tell him.

 

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[americanartifacts33]

If authentic that's a museum quality piece.. now on to the trench, that shoring is awful I wouldn't be jumping into that hole ha

 

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[digger460]

Very cool find!

 

[SnakemanBill]

sorry but I'm not buying that story.

 

[Treasure_Hunter]

Reminder.

Occasionally a member may have doubts about the authenticity of an item posted by another member. Here are a few things to keep in mind:

1. It is NEVER appropriate or permissible, regardless of proof, to state or suggest in an open forum that another member's find may not be genuine— unless, of course, he has raised that possibility himself, or there is an obvious issue that cannot be disputed or ignored (for example, if the word "COPY" is clearly stamped on a coin).

2. It is NEVER appropriate or permissible to suggest that a member may not actually have found the item which he has posted as a find.

3. Members are free to express such opinions to one another in private messages, but should NOT continue to do so if those messages are unwelcome.

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All finds posted are presumed to be genuine, and those who post them are to be respected.

 

[southfork]

You're right. It patinates very little, if at all. I believe there's a test called hydration analysis used in determining whether an obsidian artifact was made recently or anciently.

I have found a lot of obsidian artifacts from paleo to historic with mineral deposits .

 

[welsbury]

Of course obsidian patinates! You have heard of onion skin patination. The obs hydration measurement spoke of measures the thickness of the deterioration of the obsidian, the patina. This thickness is dependant on a lot of things, the location being one,exposure, minerals in soil. I think it depends a lot on the composion and purity of the obsidian also. It is kind of like old bottle glass, some bottles of same age in same place will be clean and smooth while others of less pure glass will be cloudy and rough.You can find the same thing in points of same era in same place. Some will be slick and shiny while others will have a lot of patina.

 

[quito]

Of course obsidian patinates! You have heard of onion skin patination. The obs hydration measurement spoke of measures the thickness of the deterioration of the obsidian, the patina. This thickness is dependant on a lot of things, the location being one,exposure, minerals in soil. I think it depends a lot on the composion and purity of the obsidian also. It is kind of like old bottle glass, some bottles of same age in same place will be clean and smooth while others of less pure glass will be cloudy and rough.You can find the same thing in points of same era in same place. Some will be slick and shiny while others will have a lot of patina.

Uh huh!

 

[Rick K]

If he really found it - I, of course have no opinion in the matter - he would have been well served to keep it to himself.

 

[T.C.]

I have found a lot of obsidian artifacts from paleo to historic with mineral deposits .

Yea buddy...I also live in Obsidian country and it sure as hell patinates. I've never heard of obsidian being found in the Dakotas...

 

[sandchip]

Well, shoot me down! I guess I should've added, "comparatively speaking." One can find a Paleo point of Coastal Plains chert that looks like amber glass or patinated to the point of looking like a piece of chalk, through and through. So, compared to other materials and as illustrated in the pictures in post no. 25, I stand by my statement.

 

[quito]

Yea buddy...I also live in Obsidian country and it sure as hell patinates. I've never heard of obsidian being found in the Dakotas...

You have now. :-)

Many good materials were traded far and wide.

I'd bet someone has found North Dakota KRF out there.

 

[T.C.]

You have now. :-)

Many good materials were traded far and wide.

I'd bet someone has found North Dakota KRF out there.

You are correct...but it is still not a local material.

 

[RGINN]

You have now. :-)

Many good materials were traded far and wide.

I'd bet someone has found North Dakota KRF out there.

We find obsidian points in SW Oklahoma. Nothing spectacular, and it probably was traded in or carried in from New Mexico. Patination probably has a lot to do with soil composition I would guess.

 

[quito]

You are correct...but it is still not a local material.

Huh?

I figured we already knew that.

 

[CHUDs]

https://books.google.com/books?id=k...ved=0ahUKEwjGxOLNuuvZAhUByWMKHdZKDcIQ6AEILDAI

 

[Charl]

You have now. :-)

Many good materials were traded far and wide.

I'd bet someone has found North Dakota KRF out there.

KRF has been found at least as far east as western New York State.....

 

[T.C.]

You have now. :-)

Many good materials were traded far and wide.

I'd bet someone has found North Dakota KRF out there.

We've been huntin' for over 40 years and have never found any KRF out West. We have known a lot of artifact hunters through the years and none of them have found any KRF out here.

 

[quito]

We've been huntin' for over 40 years and have never found any KRF out West. We have known a lot of artifact hunters through the years and none of them have found any KRF out here.

Hmmm. Interesting it is so well known over there that being the case.

The North Dakota Dept of mineral resources says artifacts made from the flint have been found “throughout the western states and as Far East as Ohio”.

Also, T.C., I am sure you and your friends know that only a small percentage of artifacts have been picked up at this point in time. And I know a large percentage will never be picked up because so many don’t recognize or bother with a utilized flake. Both pieces of obsidian I picked up were merely utilized flakes.

keep looking, it’s out there.

 

[monsterrack]

I may be wrong but that look almost like Dacite (a type of Obsidian) and that piece is super flat. It would break very easy, Cool find!!!!!!!

 

[T.C.]

Hmmm. Interesting it is so well known over there that being the case.

The North Dakota Dept of mineral resources says artifacts made from the flint have been found “throughout the western states and as Far East as Ohio”.

Also, T.C., I am sure you and your friends know that only a small percentage of artifacts have been picked up at this point in time. And I know a large percentage will never be picked up because so many don’t recognize or bother with a utilized flake. Both pieces of obsidian I picked up were merely utilized flakes.

keep looking, it’s out there.

Hmmmm...I guess I've been schooled by an expert.