Assertion: biotite | /r/HasProperty | 4.3-28.2 wt%
Facets:
Source sentences:
text: The Fe2+/ΣFe ratios determined using the EPMA flank method in collected natural calcic and sodic-calcic amphiboles (FeO T = 2.4–12.7 wt%, Fe2+/ΣFe = 0.45–75) and biotites (FeO T = 4.3-28.2 wt%, Fe2+/ΣFe = 0.67–0.87) are consistent within an error of ±0.1 with the data obtained from the colorimetric wet chemistry method.