| The octahedra range from 5 to 10 pm in diameter and show interpenetrant growth. |
| Copper, Cu, has been found associated with cuprite octahedra at Pedra Preta, where these minerals occur on talc and magnesite. |
| Older collections sometimes contain small, very pale, transparent green fluorite octahedra from the Tomboy vein. |
| This Eagle mine is well known for dark spruce-green, rough-surfaced octahedra of fluorite associated with rhombohedra of rhodochrosite to 0.75 inch on edge. |
| The Ogluinsky mine specimens are millimeter-sized octahedra, and the Nicolay mine specimens are unabraded and have mica attached. |
| She notes that lime-green to purplish-green modified fluorite octahedra have been found at this pegmatite. |
