Traité de Minéralogie
A French treatise on mineralogy by Pierre Armand Dufrénoy, issued in Paris in 1855 for students and working mineralogists. The 240 figures are fine-line crystallographic diagrams: octahedra, cubes and prisms drawn in outline with dotted interior axes, cleavage planes and lettered vertices, useful as geometric line work, wireframe solids and diagram lettering.
