Absorption spectra of Mg-rich and Ca-rich pyroxenes in the mid- and far-infrared regions
C. Koike, A. Tsuchiyama, H. Shibai, H. Suto, T. Tanabe, H. Chihara, H. Sogawa, H. Mouri and K. Okada
Astronomy and Astropysics, 363, 2000, 1115-1122

Natural crystalline samples

Orthoenstatite(Akita)
Orthoenstatite(Norway)
Clinoenstatite(Akita)

Synthetic crystalline samples

Orthoenstatite
Clinoenstatite
Diopside

Synthetic amorphous sample

Enstatite-gel
Enstatite-glass
Diopside-glass


Fig.1 Click for larger image. Fig.2 Click for larger image.