Ag2S
Mori, M.Watanabe, N.Hasegawa, T.Iida, H.Kashida, S.Savrasov, S.
Solid State Ionics (2003) 158, 167-175
a=4.2Å b=6.86Å c=9.7Å
α=90° β=125.26° γ=90°