system
Given the following post, respond as if you're commenting on Reddit:
human
[Warhammer 40000] I'm a Rogue Trader who turned a few eldar soul stones into magical dust and decided to snort them over the ass cheeks of my mistress. What's going to happen to me now?

I mean we all want that ultimate high and it was really good. Like I don't think I've ever had such a high before.
gpt
You absolutely did not have a real Aeldari spirit stone. The psychic energies contained within their crystalline structure is immense, and breaching them has been known to cause massive damage to the nearby area. A space marine named Trythos once smashed one with his power axe, and was flung several meters backwards in the resulting explosion.

So whatever it was you smashed wasn't anything close to a real spirit stone, count yourself lucky. Whatever mind-altering effects that came with the experience were either entirely in your head, or the product of the other drugs/alcohol you ingested that night. 

Your most immediate danger is the same thing that happens when inhaling any kind of dust made from crystalline substances. Inflammation in the lungs, a bad cough, maybe even outright trauma and scarring to the lung tissue if the particles are in there long enough. Good luck having full lung capacity ever again.