Welcome to the Shroomery Message Board! You are experiencing a small sample of what the site has to offer. Please login or register to post messages and view our exclusive members-only content. You'll gain access to additional forums, file attachments, board customizations, encrypted private messages, and much more!
Well if it was "goo" then it wasn't a pure extraction, it might have been a simple 70% ethanol extraction kind of thing. IIRC, Shulgin states in the FAQs on his site that 70% is the best concentration to use for psilocybin extraction.
This would produce said "goo" rather than crystals, and I'm fairly sure it's as simple as leaving ground up shrooms in the alcohol for a few days and then evaporating it.