References to the optical spectra of Staruolite, Fe₂Al₉Si₄O₂₃(OH)

• Bancroft MG, Burns RG (1967) Interpretation of the electronic spectra of iron in pyroxenes. American Mineralogist 42,  1278-1287.
• Burns RG (1970) Mineralogical Applications of Crystal Field Theory. Cambridge University Press.
• Parkin KM, Burns RG (1980) High temperature crystal field spetra of transition metal-bearing minerals: Relevance to remote-sensed spetra of planetary surfaces. Proceedings Lunar and Planetary Science Conference 115th, 731-755.
• Taran MN, Koch-Muller M, Feenstra A (2009) Optical spectroscopic study of tetrahedrally coordinated Co²⁺ in natural spinel and staurolite at different temperatures and pressures. American Mineralogist 94, 1647-1652.
• Taran MN, Koch-Muller M (2010) Optical spectroscopic study of natural Fe-rich Pizzo Forno staurolite at different temperatures and pressures. American Mineralogist 95, 323-328.