How to use Rhombohedra in a sentence

rhombohedra
  • Aluminium fluoride, AlF 3, obtained by dissolving the metal in hydrofluoric acid, and subliming the residue in a current of hydrogen, forms transparent, very obtuse rhombohedra, which are insoluble in water.

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  • Wollaston in the angles of the rhombohedra of the carbonates isomorphous with calc-spar, he observed that the angle in the case of calc-spar varied with the temperature.

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  • It crystallizes in microscopic rhombohedra insoluble in cold acids.

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  • It forms a lustrous, nearly black crystalline mass, composed of minute rhombohedra.

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  • Arsenic possesses a steel-grey colour, and a decided metallic lustre; it crystallizes on sublimation and slow condensation in rhombohedra, isomorphous with those of antimony and tellurium.

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