钠长石 湖南衡山 980（℃）

特级钠长石及其石磨粉（20目），低温

sio2:68%~70%al2o3:18%~21%fe2o3:≤0.10%

na2o:≥10%k2o2≤0.5%

经1200℃烧后呈乳白色，白度≥56度。

chemical composition:

special grade albite and feldspar power (20 items), low temperature

sio2:68%~70%al2o3:18%~21%fe2o3:≤0.10%

na2o:≥10%k2o2≤0.5%

it presents cream color after burned by 1200℃, degree of white≥56.