White micas

Slightly mineralized granites(a,d)

Cassiterite, zircon and thorites in greisenized granite(a)

Wittichenite

Supergene enrichment of copper ores(b-e)

Wolframite

Slightly mineralized granites(a-c,e)

Minor sulphide mineralization in granite(f)

Porphyry-style tin-tungsten-molybdenum ores(a-c)

High-temperature tin-tungsten-bismuth mineralization(c)