What scales did Chuck Schuldiner (R.I.P.) use in his solos? Info on Symbolic and Crystal Mountain most preferred.

#1
Title says. I've been trying to figure it out. I know he uses some Harmonic Minor and Phrygian Dominant but only in riffs I think.
#3
The minor scale.
Quote by AlanHB
Just remember that there are no boring scales, just boring players.

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