- highly twinned crystals
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сильнодвойникованные зерна
Англо-русский словарь терминов металлургии и сварки. 2011.
Англо-русский словарь терминов металлургии и сварки. 2011.
Crystal twinning — Diagram of twinned crystals of Albite. On the more perfect cleavage, which is parallel to the basal plane (P), is a system of fine striations, parallel to the second cleavage (M). Crystal twinning occurs when two separate crystals share some of… … Wikipedia
Diamond — This article is about the mineral. For the gemstone, see Diamond (gemstone). For other uses, including the shape ◊, see Diamond (disambiguation) … Wikipedia
Diffraction topography — (short: topography ) is an X ray imaging technique based on Bragg diffraction. Diffraction topographic images ( topographs ) record the intensity profile of a beam of X rays (or, sometimes, neutrons) diffracted by a crystal. A topograph thus… … Wikipedia
Silicate minerals — ▪ Table Silicate minerals name colour lustre Mohs hardness specific gravity Tectosilicates (three dimensional networks) feldspar (for other examples, see feldspar) orthoclase flesh red, white to pale yellow, red, green vitreous 6–6½ 2.6… … Universalium
Barringer Hill — is a famous geological and mineralogical site in central Texas. It lies on the former west side of the Colorado river, beneath Lake Buchanan, about convert|22|mi|km northeast of the town of Llano. The hill consists of a pegmatite and geologically … Wikipedia
Schreyerite — (V2Ti3O9), is a vanadium, titanium oxide found in the Lasamba Hill, Kwale district in Coast Province Kenya. It is a polymorph of kyzylkumite. The ore mineral occurs as exsolution lamellae and particles in rutile, coexisting with kyanite,… … Wikipedia
Hauyne — Infobox mineral name = Hauyne category = boxwidth = boxbgcolor = caption = formula = (Na,Ca)4 8Al6Si6(O,S)24(SO4,Cl)1 2 color = Blue, white, grey, ... habit = system = Isometric twinning = cleavage = Distinct/Good, Distinct on {110} fracture =… … Wikipedia
Crystallographic database — A crystallographic database is a database specifically designed to store information about crystals and crystal structures. Crystals are solids having, in all three dimensions of space, a regularly repeating arrangement of atoms, ions, or… … Wikipedia
Diamond cut — This article is about diamond cut styles. For a broader discussion of decorative diamonds, see Diamond (gemstone). Part of a series on Diamonds Material … Wikipedia
Exeter — For other uses, see Exeter (disambiguation). City of Exeter Clockwise: The Cathedral, The Clock Tower, Devon County Hall, Cathedral Close, The Iron Bridge … Wikipedia
Gypsum — Infobox mineral name = Gypsum category = Mineral boxwidth = boxbgcolor = caption = Desert rose, 10 cm long formula = Calcium Sulfate CaSO4·2H2O molweight = color = White to grey, pinkish red habit = Massive, flat. Elongated and generally… … Wikipedia