Black spear head I guess?

curious kat · Jan 7, 2014

Here's our largest, can I say "point", guess it is part of a spear head? Didn't notice before but there is some "blue" on it, anyone know what kind of rock this is made from?

SCrocks · Jan 7, 2014

That or a big knife blade. Nice flaking on it. Hope ya find the rest someday soon.

quito · Jan 7, 2014

Spearhead (lanceolate) of Knife, that's for sure.

From the pics, the material looks like obsidian.

painterx7 · Jan 7, 2014

Sweet knife it looks to have some fossil inclusions in it does obsidian have those ? I don't find volcanic glass around here but it looks like a dark chert

GatorBoy · Jan 7, 2014

I really hope you find the rest of that one day.
Those blue spots look like they could be little sections of quartz veins in the chert.
I found one with the same thing

Jon Stewart · Jan 7, 2014

Looks like low grade obsidian.

ncnurseryman · Jan 7, 2014

Love seeing the obsidian points. Beautiful material.

Chris in BC · Jan 7, 2014

with the inclusions, I would say basalt. regardless, basalt - chert or whatever, it's a beauty

GatorBoy · Jan 7, 2014

I just hopped on the p.c. for a better look.. not thinking chert anymore sorry.. I know that stuff.

monsterrack · Jan 7, 2014

Looks like Dacite to me which is a type of Obsidian, and the blue who knows :icon_scratch:

But that would have been a killer blade for sure :icon_thumleft:

curious kat · Jan 7, 2014

Well, thank you everyone! I'm pretty sure it's not obsidian, or at least not any I've ever seen...and I see a lot of it...everyday! Seems much harder and denser. Yes, hope we find the rest of it, that would be nice for sure! I'll look up what you suggested monsterrack & Chris, and see if it looks like those. So, you guys thinks "knife", sounds good to me! lol

austin · Jan 8, 2014

I think it's chert, but you know who would know? Experts at U of NM, Should ask them...

curious kat · Jan 8, 2014

...looked at what you guys suggested and still not really sure...hard to tell from pictures. I'd probably trust you guys more than myself, since you've probably been around those types of rocks & studied them more than I. Maybe like you guys said...a type of obsidian that I'm not aware of? Thanks for the help everyone!

rock · Jan 9, 2014

Looks like chert to me

curious kat · Jan 9, 2014

...rock says chert...guess it's chert lol

old digger · Jan 9, 2014

What a heartbreaker! But a Cool Find! :thumbsup:

Looks like a spearhead by the the fine retouching on the cutting edges. And the material looks like a dark olivine quartz with black streaks in it. Certainly volcanic related. Nice!

curious kat · Jan 9, 2014

...olivine quartz with black streaks...thank you....going to look that up...

rock · Jan 9, 2014

if I had found it it would be chert. thats all they have here that is shinny black

old digger · Jan 9, 2014

If you click on the first photo and proceed to the most magnified picture you can see the greenish tint with the white background, along with the black streaks. I am not aware of any Chert that is translucent. JMO.

curious kat · Jan 9, 2014

Hi guys...I had though it was just a "black" whatever, didn't really notice all the various color it had until posting and getting to see it magnified! The "blue" color is what I noticed first, then the rest.....thank you both for helping!