IRON. talL°d ClnS maSSiV<? ’ dlsSeminated ’ and frequently crys- The following are its crystallisations: 1. Flat double three-sided pyramid, in which the la teral planes of the one are set on the lateral edges 0 le other. The planes are streaked in the di- 1 ection of the larger diagonals. It is the funda- mental crystal of this species *, fig. 204. D ° Ul ; 6 pyramid, i„ wflich the , es on the common base are truncated, and the trun cating planes obliquely set on the lateral edmis, so that three of the planes incline towards one summit and three towards the otherf, fig. 205. • 1 lie preceding figure, in which the angles formed T the meeting of the truncating planes are more oi Jess deeply bevelled +, fig. 200, 207. 4. Sometimes the truncations on the angles of the base become so large that they nearly touch each o id, am then a rhomboid, nearly passing into the cube is formed, in which the remains of the I) ramidal p ia „es become truncations on the la- tei al edges. IV hen the pyramidal planes entire- y disappear, the rhomboid ||, fig. 208. is formed. - <>• I he preceding rhortiboid viewed as a nearly rectan- g« ar double three-sided pyramid, deeply trun cated on the summits, gives a very oblique oc tahedron, * Fer oligiste binairc, Hauy. t Fer oligiste bi-rhomboidal, Itauy. t Fer oligiste binoternaire, Hanr Ti,;. • ... lisation of the Elba Iron-glance. m ° S ‘ C ° mm ° n CryStal ‘ II Fer oligiste primitif, Itauy.