[Rockhounds] Unknown Oolitic?

[Jay Bates]

I seems to me whatever you are scratching is calcite. Maybe a calcite 
coating on the underlying material which could be jasper/agate.

Wayne Rasmussen wrote:
> John,
>
> It seems to me that is a Botroidal Jaspagate,  nice specimen at that.
>
> Wayne
>
> ----- Original Message ----- From: "John Siebel" 
> <john at pandemoniumgraphics.com>
> To: "Rockhounds at drizzle.com: A mailing list for rock and gem 
> collectors" <rockhounds at lists.drizzle.com>
> Sent: Wednesday, February 18, 2009 11:33 PM
> Subject: [Rockhounds] Unknown Oolitic?
>
>
>> Yo List,
>>
>> I've got a specimen here, one of many I have failed to label in the 
>> field. I can be such a jerk. My assumption is that this puppy is from 
>> somewhere between Portland, OR and Tillamook, OR.  Julie thinks that 
>> we found a volcanic "Bomb" at the same site and wants to call this, 
>> "Ooltic Lava." I'm thinking, "Botroidal Jasper" but a scratch test 
>> gives me a hardness of 3. Anyone have a clue?
>>
>> http://www.flickr.com/photos/31394106@N08/3291566447/
>>
>> Thanks - John
>>
>> -- 
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>