Is this an Iridescent Cloud!?

[Amir]

I'm about to enter a physics photography contest and i thought of a picture that I think I took of an iridescent cloud.
but since I was hesitant about the cloud being an iridescent, I wanted to ask wether anyone can confirm it.

it was around 11AM if that matters and the cloud was like ~20 degrees from the sun.
here is another shot

[owlice]

Amir, I think you have a gorgeous circumhorizon arc.

That's really a lovely, lovely shot!

Here's a very fine display of iridescence.

[Amir]

yes, seems to match the description!
i think that's what it is. thank u ;D

[owlice]

You're welcome! Good luck!

[geckzilla]

So is that a 22º halo with the circumhorizon arc?

[owlice]

geckzilla, yes, I think it is.