资料来源 : pyDict

赤铁矾

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Botryogen \Bot"ry*o*gen\, n. [Gr. ? cluster of grapes + -gen.]
   (Min.)
   A hydrous sulphate of iron of a deep red color. It often
   occurs in botryoidal form.