Red Shadow Claws
Six Thousand Club
When it was first mentioned, I got the impression Quill didn't want to reveal information to anyone outside the circle to avoid interference. I would think he'd attempt to solve the issue without them first, but again, that may be based on a misunderstanding.
Your project though, don't let us get in the way of making it work.
He doesn't want to reveal much information. But Lyla, at least, already knows he's a Solar, so it's less of a 'risk'. And there is more than one way to ask for such information, besides coming right out and saying "hey, i'm a Solar, and I'm looking for an Orichalcum Artifact, do you know where it is?"