Min. [ad. Ger. tautoklin (Breithaupt, 1830), f. Gr. ταὐτό (TAUTO-) + κλίνειν to bend, incline; so called ‘because it has the same rhombohedral angle as dolomite’ (Chester).] A greyish-white variety of ANKERITE.
1868. Dana, Min. (ed. 5), 685.
