How To Use Rhombohedral In A Sentence
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Like hematite, some goethite is pseudomorphic after a rhombohedral carbonate mineral.
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Thus. it is clear that at one point in the history of these specimens they appeared as normal quartz crystals perched upon a matrix of rhombohedral carbonate, likely dolomite.
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The calcite formed scalenohedral and rhombohedral crystals on some of the quartz crystal groups.
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No evidences of low-temperature phase transition were found for PbTiO3, while the tetragonal-orthogonal and orthorhombic -rhombohedral phase transitions were present for BaTiO3.
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The calcite formed scalenohedral and rhombohedral crystals on some of the quartz crystal groups.
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In the gold/pyrite ore, it occurred as sharp, cloudy white rhombohedral crystals to 3 mm in size; tennantite and tetrahedrite were typically crystallized on the calcite.
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At the Kingston mine, calcite occurred as thin massive veins cutting the lode and as modified rhombohedral crystals to 7 mm with inclusions of cuprite and chalcocite.
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In addition, poor-quality, translucent to cloudy, dark gray cordierite is also present, as is corundum with well-developed rhombohedral parting that tends to crumble.
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Like hematite, some goethite is pseudomorphic after a rhombohedral carbonate mineral.
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This insulin hexamer corresponds with the unit cell in the rhombohedral crystals first investigated and is the asymmetric unit in the monoclinic form which appears in the presence of phenol.
Nobel Lecture The X-Ray Analysis Of Complicated Molecules
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Translucent white to gray, tabular rhombohedral crystals with knifelike edges are common.
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They usually involve three numbers or, in the case of hexagonal and rhombohedral symmetries, four numbers, one for each crystallographic axis.
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Small rhombohedral crystals have been reported from the Magnet mine, Tasmania.
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Rhombohedral penetration twins of the ‘Rossie habit’ are occasionally encountered.
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It is rhombohedral in crystallization and isomorphous with calcite and chalybite.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary"
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One of our recent projects was to make use of the rhombohedral crystals to construct the electron density profile of the transmembrane pores.
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The rhombohedral phase usually occurs as large tabular inclusions near the rims of ferromagnesian phenocrysts.
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True, in the august presence of rhombohedral crystals, retinasphaltic resins, gehlenites, Fassaites, molybdenites, tungstates of manganese, and titanite of zirconium, why, the most facile of tongues may make a slip now and then.
Journey to the Interior of the Earth