Fayalite-bearing quartz syenite could represent the early fractional stage initial granitic magma derived from archean protolith in a deeper and reductive environment.
含铁橄榄石石英正长岩，代表了岩浆分离结晶初期还原条件下，太古代母岩派生的初始岩浆组成。
2
However, the temperatures and oxygen fugacity of magmas at high level magma chamber decreased along with fractional crystallization.
但在高位岩浆房中，随着分离结晶作用的进行，岩浆的温度和氧逸度逐渐降低。
3
A new viewpoint has been advanced for the Dajieshan tungsten deposit to be formed by fractional mineralization of liquid state magma.