| Copper, Cu, has been found associated with cuprite octahedra at Pedra Preta, where these minerals occur on talc and magnesite. |
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| The octahedra range from 5 to 10 pm in diameter and show interpenetrant growth. |
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| Older collections sometimes contain small, very pale, transparent green fluorite octahedra from the Tomboy vein. |
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| Peterson and Jordan go on to investigate interesting links between integer octahedra and integer antiprisms. |
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| Most that I have seen have been elongated octahedra or other forms, such as some of the branches of an arborescent aggregate. |
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| In contrast to crystals that resemble textbook drawings, the most frequently encountered gold crystals are skeletal octahedra. |
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| The Ogluinsky mine specimens are millimeter-sized octahedra, and the Nicolay mine specimens are unabraded and have mica attached. |
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| She notes that lime-green to purplish-green modified fluorite octahedra have been found at this pegmatite. |
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| The fluorite tends to occur only as cubes modified by the dodecahedron, with simple cubes or octahedra uncommon or absent. |
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| One small lot of specimens from Alta Floresta, Mato Grosso, exhibited moderately rounded, well-developed octahedra. |
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| The structure of boehmite consists of double layers of oxygen octahedra partially filled with Aluminium cations. |
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| There were smoky quartz crystals plus huge fluorite octahedra. |
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| Some of the cavities contain bits of iron oxides, and relatively sharp octahedra have been found on weathered pseudomorphs of limonite after pyrite. |
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| 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. |
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| Promising also is the dominance of octahedra above dodecahedra diamond forms, pointing to little resorption. |
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| All of the diamonds are white or brown octahedra or macles and fragments of octahedra which do not show extensive resorption. |
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| These formed sandwiched octahedral Al sheet with oxygen atoms at the apex shared by the octahedra with the tetrahedra. |
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| The structure consists of two distorted octahedra sharing a common edge through chlorine atom bridging. |
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| Additionally, the Crockett Corner enabled some unique approaches for constructing cubes, octahedra, and other polyhedra. |
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| They observed hard triangular prisms and hard gyrobifastigia to directly transform into their space-filling crystal, while hard truncated octahedra, rhombic. |
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| The Keggin unit consists of a central atom in a tetrahedral arrangement of oxygen atoms surrounded by 12 oxygen octahedra connected with tungsten or molybdenum. |
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| The Black Lick sample contained diamonds which are white or brown octahedra, or macles and fragments of octahedra which do not show extensive resorption. |
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| Its pore structure consists of truncated octahedra linked to other cavities through 6-membered rings and of truncated cuboctahedra linked together through 8-membered rings. |
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