Heritage Science

Table 5 Summary of temperatures determined during the analysis of slags with various methods

From: The use of predominance area diagrams (PAD) to determine the oxygen and sulfur fugacities prevailing during historical metallurgical processes: the case of fifteenth to seventeenth century copper slags from Polichno (Old Polish industrial district)

		POL1	POL2	POL3	POL4	POL5
	Temperature in °C
Experiment	Liquidus	–	1100 (for glass)	–	1200	–
	Liquidus	–	1200 (including SiO₂ grains)	–	1200	–
	Solidus		800		1100
Microscope observations	Liquidus	1263	1126	1154	1138	1246
Microscope observations	Solidus	1100	821	1090	1060	1058
CaO-SiO₂-FeO diagram	Bulk composition	1300–1400	1500–1600	1400–1500	1300–1400	1300–1400
CaO-SiO₂-FeO diagram	Glass	1300–1400	1400–1500	1400–1500	1400–1500	1200–1300
CaO-SiO_2-FeO-6% Al₂O₃ diagram	Bulk composition	1200–1250	1250–1300	1120–1160	~ 1250	~ 1250
CaO-SiO_2-FeO-6% Al₂O₃ diagram	Glass	1300–1350	1140–1180	1160–1180	1250–1300	1060–1080

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