(1) a lower leucocratic zone,
consisting predominantly of albitite or diopside-bearing albitite
with minor actinolite, titanite, fluorapatite and magnetite; (2) a
middle melanocratic zone, composed of actinolite (after diopside),
fluorapatite, phlogopite and magnetite, associated with the majority of the economic iron mineralization in the Ningwu basin; and
(3) an upper leucocratic zone characterized by extensive argillic,
kaolinite, silica, carbonate and pyrite alteration locally associated
with small pyrite and gold orebodies.
(1) a lower leucocratic zone,
consisting predominantly of albitite or diopside-bearing albitite
with minor actinolite, titanite, fluorapatite and magnetite; (2) a
middle melanocratic zone, composed of actinolite (after diopside),
fluorapatite, phlogopite and magnetite, associated with the majority of the economic iron mineralization in the Ningwu basin; and
( 3 ) ลักษณะโดย leucocratic บนโซนกว้างขวางอาร์จิลลิก
, function , ซิลิกา , คาร์บอเนตและการเปลี่ยนแปลงภายในที่เกี่ยวข้องกับไพไพ
ขนาดเล็กและ orebodies ทอง
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