Its characterised as blocky dipyramidal crystals. 
Also found more typically as powdery yellow coatings, usually formed from volcanic action - as a sublimate from volcanic gasses.
Sulphur quartz or quartz with sulphur resonates with the solar plexus and crown chakras.
This mineral is found in Indonesia, Chile, and Japan.
Historically and in literature sulphur is also called "brimstone" which translates to "burning stone".