Groutite Kohler T, Armbruster T, Libowitzky E Journal of Solid State Chemistry 133 (1997) 486-500 Hydrogen bonding and Jahn-Teller distortion in groutite, alpha-MnOOH, and manganite, gamma-MnOOH, and their relations to the manganese dioxides ramsdellite and pyrolusite Locality: Nchwaning Mine, Kalahari manganese field, Republic of South Africa _database_code_amcsd 0013941 10.667 2.871 4.554 90 90 90 Pnma atom x y z Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Mn .14014 .25 -.05014 .00616 .00696 .00534 .00620 0 .00099 0 O1 -.18652 .25 .2989 .0074 .0082 .0067 .0073 0 .0017 0 O2 -.07017 .25 -.1947 .0074 .0087 .0076 .0058 0 -.0001 0 H -.099 .25 .641 .038