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???? ?? ???? ????? ?? ???? ???? ????? ?? ???????? ???? ????
??????? (Fe?O?): ??? ???? (55-68% Fe)
?? ??? '?? ??? ????? ?? ??? ????? ??, ????? ??????? ?? ???? (?????) ?? ???????? ?????
?????? (Fe?O?): ??? ???????? ???? (25-40% Fe)
???????? ??? ???????? ??? ??????????? ??????? ??, ???????? ???? ??? ???????? ???? ???? ???
???????/?????????: ????????? ?????? (35-55% Fe)
???? ??? ??? ???? ??? ????? ?? ??? ????? ??, ?? ?? ?????????? ???????? ???? ?? ????? ???
???????? (FeCO?): ??????? ???? ?????? 48.2%
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???????? (Fe?O?)
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