measured	value	unit
[SiO₂]	51.2	%
[TiO₂]	0.4	%
[Al₂O₃]	25.0	%
[FeO^T]	1.3	%
[MnO]	0.0	%
[MgO]	3.4	%
[CaO]	0.0	%
[Na₂O]	0.2	%
[K₂O]	10.6	%
total	92.1	%

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