Geofluids

Research Article

Physiochemical Restrictions of Mineral Zoning of Sediment-Hosted Stratiform Copper Deposit in SW China

Table 6

The pH, Eh , and range of mineral assemblage at different temperature.


	FeS₂	CuFeS₂	Cu₅FeS₄	Cu₂S

373 K
Eh	(−0.07, 0.33)	(−0.61, 0.06)	(−0.43, 0.06)	(−0.80, −0.33)
pH	(0, 2.7)	(1, 10)	(1, 10)	(6.4, 12.2)
	(−63.1, −47.5)	(−63.1, −55)	(−63.1, −56.8)	(−63.14, −56.2)
	(−25.0, −8.7)	(−38.4, −25.0)	(−18.2, −8.7)	(−34.3, −8.7)
423 K
Eh	(−0.07, 0.33)	(−0.59, 0.07)	(−0.80, −0.59)	(−0.80, 0.12)
pH	(0, 2.6)	(0.8, 8.8)	(7, 10.7)	(10.7, 11.6)
	(−55.5, −39.8)	(−55.5, −41.7)	(−55.5, −46.1)	(−55.5, −48)
	(−20.5, −6.5)	(−32.5, −20.5)	(−12.7, −6.5)	(−29.7, −6.5)
473 K
Eh	(−0.08, 0.34)	(−0.59, 0.07)	(−0.80, −0.59)	(−0.80, −0.08)
pH	(0, 2.4)	(0.8, 8.2)	(6.3, 10.1)	(10.1, 11.3)
	(−48.6, −34.1)	(−48.6, −36.4)	(−48.6, −41)	(48.6, −42.3)
	(−16.9, −5.1)	(−28.3, −16.9)	(−11.1, −5.1)	(−26.1, −5.1)
523 K
Eh	(−0.08, 0.34)	(−0.58, 0.08)	(−0.80, 0.59)	(−0.80, −0.20)
pH	(0, 2.3)	(0.7, 7.6)	(7.6, 9.4)	(9.4, 11.0)
	(−43.4, −29.3)	(−43.4, −30.8)	(−43.4, −35.8)	(−43.4, −37)
	(−14.0, −4.1)	(−24.9, −14.0)	(−8.6, −4.1)	(−23.2, −4.1)