Arabian Ammonite

[Hajar]

I polished these pieces, found loose in the scree, with fine (F400) silicon carbide (from a stone-tumbler kit belonging to the kids) on a piece of old picture-frame glass. The naturally weathered appearance can be seen in #9 above.

Blendinger (1991) documented the J. magnus, C. bicrenatus, H. hogarti and H.macer zones of the Norian in these rocks.

 

[Hajar]

There's a note on the Cunningtoniceras here.

 

[DWhatley]

Hajar,
When you say polished with the glass and silicone, do you mean that the silicone carbide is a grit and you put the grit on the glass and then rubbed the fossil around on the grit? Sorry, I have only used sand paper to polish acrylic tanks or to attempt a decent finish on wood for a tank stand or three . Mother was into finding and tumbling semi-precious stones years ago but long after I was married so I never learned much about polishing rocks.

 

[Hajar]

Yup, that's exactly how it's done. A very good plan if you want to look at the details of fine-scale structures.

 

[DWhatley]

your newsletter.

Any chance of getting a copy of the video? Subtitles OK

 

[Architeuthoceras]

Nice newsletter

 

[Hajar]

Thank you Kevin and I'll see what I can do D. The film was first shown last night, but I couldn't be there.