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1 rhombohedron
См. также в других словарях:
rhombohedra — rhom·bo·he·dron || ‚rÉ‘mbəʊ hedrÉ™n , hÉªË /‚rÉ’m n. polyhedron whose faces are six equal rhombuses … English contemporary dictionary
Calcite — A one inch Calcite Rhomb that shows the Double image refraction property. General Category Carbonate mineral … Wikipedia
Cleusonite — General Category Oxide minerals Chemical formula (Pb,Sr)(U4+,U6+)(Fe2+,Zn)(Ti,Fe2+,Fe3+)18(O,OH)38 Strunz classification 0 … Wikipedia
rhombohedron — noun (plural drons or rhombohedra) Etymology: New Latin Date: 1836 a parallelepiped whose faces are rhombuses • rhombohedral adjective … New Collegiate Dictionary
Ammonium perchlorate — Ammonium perchlorate … Wikipedia
Amphibolite — (pronEng|æmˈfɪbəlaɪt) is the name given to a rock consisting mainly of hornblende amphibole, the use of the term being restricted, however, to metamorphic rocks. The modern terminology for a holocrystalline plutonic igneous rocks composed… … Wikipedia
Coccolith — False colour scanning electron micrograph of Gephyrocapsa oceanica, showing the coccoliths. Coccoliths are individual plates of calcium carbonate formed by coccolithophores (single celled algae such as Emiliania huxleyi) which are arranged around … Wikipedia
Dioptase — from Altyn Tübe, Kazakhstan, the type locality General Category Silicate mineral … Wikipedia
Alunite — Alunite, or alumstone, is a mineral that was first observed in the 15th century in Monti della Tolfa, north to Rome, where it was mined for the manufacture of alum. First called aluminilite by J.C. Delametherie in 1707, this name was contracted… … Wikipedia
Phenakite — Phenacite or phenakite is a nesosilicate mineral consisting of beryllium orthosilicate, Be2SiO4. Occasionally used as a gemstone, phenacite occurs as isolated crystals, which are rhombohedral with parallel faced hemihedrism, and are either… … Wikipedia
Robert Ammann — (October 1, 1946 ndash; May, 1994) was an amateur mathematician who made several significant and groundbreaking contributions to the theory of quasicrystals and aperiodic tilings.Ammann attended Brandeis University, but generally did not go to… … Wikipedia
