Help identifying a stone

[pietraspaziale]

A couple of years ago I found a stone laying on the surface of the ground and I picked it up, since was looking interesting. I have been wondering what kind of stone is and if could possibly come from outer space. The stone weights 5 and 3/8 ounces; the dimensions are appx. 1.5" x 2" x 1.5"; It has an after all oval shape but it is broken on three sides, like after an impact. The inside is vitreous, brown color, and very smooth; the outside is darker brown and seems to have an ablation crust. I tested with a standard magnet and the stone seems not to have any magnetic property.

I'd like to have an opinion on what this stone could be. I compared to many meteorite pictures and none seems to match.

 

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[pietraspaziale]

That's the first thing I thought, but i can't explain the presence of an outer "crust" of different color. Any idea about that?

 

[curbdiggercarl57]

Chert?

 

[pietraspaziale]

Beautiful and helpful picture. Thank you.

 

[wheelerite]

looks like jasper to me.
ksmith

 

[TheCannonballGuy]

I agree with Wheelerite ...it appears to be one of the "plain" forms of Red Jasper. Plain, meaning primarily a solid color, rather than several "patterned" (intermingled/banded) colors. I think somewhere in the attic I've still got a piece that looks like yours, in one of my old rock-&-mineral boxes, from my college days of rockhounding. I found my red Jasper in a streambed in NE Alabama, at a place called Paint Rock Valley.

The photo here shows a chunk of red jasper, but the specimen is broken/blasted one from mining, rather than a water-worn (river-pebble) shape like yours.
http://www.mindat.org/min-2082.html

 

[traderoftreasures]

Chert?

 

[trixie charger]

Chert?

Chert

 

[Gunrunner61]

I would sat just from the pictures of that you have some type of flint or chert, Post on an arrowhead forum, those guys can tell ya. let them know what state and area that you found it in. JMHO.

 

[TheCannonballGuy]

Trixie Charger, that's a wonderful photo, clearly showing the exact same form and coloration of the red-jasper chert nodules I was finding at Paint Rock Valley in NW Alabama when I lived near that area in the early 1970s! The photo brings back many pleasant old memories. Thanks!

Let me politely clarify for the fourm's readers that my ID of Pietraspaziale's stone was not incorrect. Jasper one of several varieties of Chert. Here is "official" info (from the University of Texas website) which gives the names of several varieties of Chert, specifically including flint, jasper, agate, etc:
http://www.beg.utexas.edu/mainweb/publications/graphics/chert.htm

 

[mile-ender]

Trixie Charger, that's a wonderful photo, clearly showing the exact same form and coloration of the red-jasper chert nodules I was finding at Paint Rock Valley in NW Alabama when I lived near that area in the early 1970s! The photo brings back many pleasant old memories. Thanks!

Let me politely clarify for the fourm's readers that my ID of Pietraspaziale's stone was not incorrect. Jasper one of several varieties of Chert. Here is "official" info (from the University of Texas website) which gives the names of several varieties of Chert, specifically including flint, jasper, agate, etc:
http://www.beg.utexas.edu/mainweb/publications/graphics/chert.htm

They're actually all just varieties of quartz
A great site that's helped me a lot in the past is - mindat.org

 

[bugguy]

I would sat just from the pictures of that you have some type of flint or chert, Post on an arrowhead forum, those guys can tell ya. let them know what state and area that you found it in. JMHO.

thats what i was thinking arrow head type stone

 

[LESOTHO]

i think this is obsidian..

 

[littleneckhalfshell]

I have a broken triangular arrow head that was the 'inside' color of your stone, it was found in upstate NY and was identified as Pennsylvania Jasper for me at the State Museum in Albany. It was an example of the trade that tribes must have engaged in over many miles.

 

[unclemac]

most of the points I have found are made of this stone, jasper was a very common lithic material in the PNW and across the Great Basin.