My memory doesn't usually paint a coherent picture for things I've read in the deep past....
At the moment I'd choose:
"Xelucha" M.P. Sheil
"Phorfor" M.P. Sheil (the entire collection "Shapes in the Fire" is quite remarkable)
"Conflict" Stéphane Mallarmé
"Witch In-Grain" R. Murray Gilchrist...