measured	value	unit
[SiO₂]	37.4	%
[TiO₂]	0.5	%
[Al₂O₃]	21.2	%
[FeO^T]	29.2	%
[MnO]	1.6	%
[MgO]	5.1	%
[CaO]	3.3	%
[Na₂O]	0.2	%
[K₂O]	0.0	%
total	98.6	%

tables:

Table 2 Experimental results of Ota, T. (2008) Tourmaline breakdown in a pelitic system: implications for boron cycling through subduction zones, Contributions to Mineralogy and Petrology, 155, 19-32. more
Table 3 Chemical compositions of minerals in run products of Ota, T. (2008) Tourmaline breakdown in a pelitic system: implications for boron cycling through subduction zones, Contributions to Mineralogy and Petrology, 155, 19-32. more