This crystals remind me more also of salts recrystallisation too than harmalas who tend to do brown powder which wet simply is some brown clay like apparence. The HCL makes very tiny needle like crystles.. no huge cluster as far as seen. Now I never did the exact same extraction as you did ( using lye as well as carbonate, with sodium chlorides ).
Nice stalagmites nonetheless.
A few tests could settle this down.
Smell like tea n,n spirit !
Toke the toke, and walk the walk !