Al-poor and Al-rich orthoamphiboles: a M6ssbauer spectroscopy and TEM study

M6ssbauer spectroscopy and electron microscopy were combined to study one Al-poor anthophyllite and one Al-rich gedrite. TEM show that Al-rich gedrite is not homogeneous and that the complexity of its M6ssbauer spectrum isdue to sub-microscopic intergrowth of chlorite and lizardite