Марганцийн хүдрийг баяжуулах технологи | PPT
17.Sample :- Chikla mines; Braunite was the main manganese bearing mineral followed by Jacobsite & Hausmanite are in minor amout. Quartz was the main gaunge mineral followed by hematite in minor amount. Apatite was observed to be the only phosphorous bearing mineral intimately associated with manganese minerals.
Бетон хучилтын хавтанг бутлах хүч гэж юу вэ
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