| The principal crystalline forms of oxalate of lime, when it occurs as a urinary deposit, are the octahedral and the dumb-bell. |
| In 1990 bright emerald-green, transparent, octahedral fluorite crystals were discovered in the Kettle mine by mine surveyor Michelle Scott. |
| The outer portion of the garnets is altered to clinochlore, and small octahedral crystals of magnetite and martite occur in the schist. |
| Also, some glass scientists thought the glass would immediately crystallize if it became octahedral. |
| They differ, however, from the other layer silicates because they lack continuous octahedral sheets. |
| Starting from the octahedral ground-form, the table and culet are in every case first developed. |
