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Let's Rock => Identifications of Materials => Topic started by: R.U. Sirius on November 09, 2020, 01:35:43 PM

Title: A nodule with red jasper-looking parts
Post by: R.U. Sirius on November 09, 2020, 01:35:43 PM

This is a thunderegg-like nodule of cream/brown colour on the outside, with curious red portions showing up in few spots, some of them orbicular with a pink/purple translucent central portions.

SG is ~2.6.

I ground off a small window that you can see wet in the second picture.

Does anyone recognize what this might be? Colours and the nodule form make me wonder if this might be a Willow Creek egg, but that's just wishful thinking on my part...

Title: Re: A nodule with red jasper-looking parts
Post by: qtz2010 on November 17, 2020, 03:47:22 PM

 Teepee Canyon SDakota?

Title: Re: A nodule with red jasper-looking parts
Post by: R.U. Sirius on November 25, 2020, 01:07:07 PM

Here it goes... quite an underwhelming agate-like interior, with some bright red inclusions. The colours do resemble the Teepee Canyon material, but there is no banding apparent in this section.

I think I'll just set it aside into the "maybe some day" pile.

Title: Re: A nodule with red jasper-looking parts
Post by: ileney on December 13, 2020, 08:28:13 AM

Huh. It was deceptive. I expected something amazing inside.

Title: Re: A nodule with red jasper-looking parts
Post by: R.U. Sirius on February 11, 2021, 07:41:16 AM

Just bumping this up, as I noticed a similar-looking material advertised online as "Utah coprolite". Can anyone here explain how this could or could not be coprolite?