Not really much anyone can tell you - it's a white powder. Could be anything. Shroom extract - nothing extracted from a shroom would be that white but it might be a research chemical like 4aco-dmt - but that's not a shroom extract it's just sort of the same family as psilocin. It could be foot odour powder for all anyone knows.
Perhaps the contents of a shroom extraction tek could be further purified down to psilocin.
I believe synthetically created 4-ho-dmt is white, but since it's illegal I don't see why anyone would go through the trouble to do that for the purposes of making a profit