| It's octahedral in shape with a high, vaulted ceiling and sunlight streaming through hidden windows. |
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| Galena is also found as larger isolated octahedral crystals within the coarse calcite cement in breccias in the upper parts of the core. |
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| The outer portion of the garnets is altered to clinochlore, and small octahedral crystals of magnetite and martite occur in the schist. |
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| In 1990 bright emerald-green, transparent, octahedral fluorite crystals were discovered in the Kettle mine by mine surveyor Michelle Scott. |
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| Also, some glass scientists thought the glass would immediately crystallize if it became octahedral. |
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| In the low-calcium orthorhombic pyroxenes, M2 contains magnesium and iron, and the polyhedron takes on a more regular octahedral shape. |
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| Its base in the form of a cube passes smoothly via flat triangular bevels to an octahedral intermediate tier. |
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| What would happen if you roll a pair of dice that are not the same, for example, one cubic die and one octahedral die? |
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| Thus, the octahedral composition varies to maintain similar amounts of the net charge deficiency as those of other smectites. |
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| They differ, however, from the other layer silicates because they lack continuous octahedral sheets. |
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| The most common type of radar reflector is the so-called square octahedral reflector, i.e. a reflector with eight cavities. |
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| Starting from the octahedral ground-form, the table and culet are in every case first developed. |
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| Shapes ranging between these two morphologies are combinations of cubic and octahedral faces. |
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| These include a Roman ring set with an octahedral pointed diamond, the natural form in which the gem occurs. |
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| Before such a stone is faceted it is reduced by cleavage to the octahedral form, in order to avoid the tedious process of grinding away portions, which need to be removed. |
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| This means that it has four identical directions of cleavage and when cleaved in the right ways can produce a perfect octahedral or diamond shape. |
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| Each layer is formed of tetrahedrally coordinated Si atoms fused into an edge-sharing octahedral plane of either alumina or magnesia. |
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| Unlike pyrophyllite and talc, the 2 1 silicate layers of smectite have a slight negative charge owing to ionic substitutions in the octahedral and tetrahedral sheets. |
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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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| Cuprous oxide filler particles in nano regime with octahedral morphology were synthesized through hydrazine reduction method. |
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| Second, a change occurs in the content of Fe and Mg which occupy chlorite's octahedral sites. |
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| It has been shown that a crystallite of platinum about 2 nm in size has unusual surfaces not present in a regular octahedral crystallite of similar size. |
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| These pairs adopt an octahedral arrangement. |
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| The presence of magnetite is further indicated by the observation of Krantz of octahedral and dodecahedral crystals in druzy pits. |
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| A zinc oxide crystal having an octahedral nucleus whose faces are alternately zinc faces and oxide faces, characterized in that a needle has grown on each of said faces. |
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| What is the most common outcome when you roll two octahedral dice? |
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| Common salt and fool's gold form cubic crystals, and calcium fluoride forms octahedral crystals. |
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| Ultra fine, phase pure, octahedral cuprous oxide nanoparticles with cuprite structure were synthesized in the lab. |
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| These octahedral share edges such that eight of the 10 water molecules are bound to sodium and two others are interstitial, being hydrogen bonded to sulfate. |
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