Table 1: Elemental oxide compositions of three types of precursor material in weight percentages and the calculated liquidus temperatures. The compositions are the same as listed (Yu & Hewins 1998) except that the small amounts of K₂O (<0.11%) were not included and magnetite (Fe₃O₄) was used in place of FeO.
Type IA Type IAB Type II

SiO₂ 45.4 47.2 49.2

TiO₂ 0.1 0.1 0.1

Al₂O₃ 4.9 9.7 4.1

Fe₃O₄ 8.3 6.6 21.3

MnO 0.1 0.1 0.1

MgO 37.4 30.7 22.7

CaO 2.5 3.5 0.2

Na₂O 1.3 2.1 2.3

Liquidus

temperature 1692 $^\circ$ C 1577 $^\circ$ C 1509 $^\circ$ C

**Table 1:** Elemental oxide compositions of three types of precursor material in weight percentages and the calculated liquidus temperatures. The compositions are the same as listed (Yu & Hewins 1998) except that the small amounts of K₂O (<0.11%) were not included and magnetite (Fe₃O₄) was used in place of FeO.
	Type IA	Type IAB	Type II
SiO₂	45.4	47.2	49.2
TiO₂	0.1	0.1	0.1
Al₂O₃	4.9	9.7	4.1
Fe₃O₄	8.3	6.6	21.3
MnO	0.1	0.1	0.1
MgO	37.4	30.7	22.7
CaO	2.5	3.5	0.2
Na₂O	1.3	2.1	2.3
Liquidus
temperature	1692 $^\circ$ C	1577 $^\circ$ C	1509 $^\circ$ C

Source LaTeX | All tables | In the text