orthorhombic pyramid

orthorhombic pyramid: Макаров: (sulphur) орторомбическая пирамида (кристалл типа серы)

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Natrolite — General Category Tectosilicate Chemical formula Na2Al … Wikipedia
dipyramid — (ˈ)dī+ noun Etymology: di + pyramid : a crystal consisting of two pyramids base to base, the one geometrically a mirror image of the other with respect to the horizontal plane of symmetry dipyramids occur in the tetragonal, hexagonal, and… … Useful english dictionary
Precious Stones in the Bible — Precious Stones in the Bible † Catholic Encyclopedia ► Precious Stones in the Bible Precious stones are stones remarkable for their colour, brilliancy, or rarity. Such stones have at all times been held in high esteem everywhere,… … Catholic encyclopedia
Potassium sulfate — Arcanite … Wikipedia
Mordenite — from Italy Morden … Wikipedia
Stephanite — is a silver antimony sulfide mineral with formula: Ag5SbS4 It is composed of 68.8% silver, and sometimes is of importance as an ore of this metal.Under the name Schwarzerz it was mentioned by Georgius Agricola in 1546, and it has been variously… … Wikipedia
natrolite — /na treuh luyt , nay /, n. a white or colorless zeolite mineral, a hydrous silicate of sodium and aluminum, Na2Al2Si3O10·2H2O, often occurring in acicular crystals. [1795 1805; NATRO(N) + LITE] * * * ▪ mineral hydrated sodium… … Universalium

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