platy structure
41boron nitride — Chem. a white powder, BN, formed by heating boron in nitrogen. In its ordinary form, it has a structure of stacked layers of hexagonal rings, very similar to that of graphite, and is used as a refractory electrical insulator. Cf. Borazon. * * * ▪ …
42clinoptilolite — ▪ mineral hydrated alkali aluminosilicate that is one of the most abundant minerals in the zeolite family. Its structure consists of an outer framework of silica and alumina tetrahedra, within which water molecules and exchangeable cations… …
43traditional ceramics — Introduction ceramic materials that are derived from common, naturally occurring raw materials such as clay minerals and quartz sand. Through industrial processes that have been practiced in some form for centuries, these materials are made …
44Népouite — from Népoui Mine, North Province, New Caledonia, New Caledonia Specimen size 21 cm. General Category Phyl …
45Quercus alba — Taxobox color = lightgreen name = White Oak status = G5 status system = TNC status ref = Cite publisher =NatureServe title = Quercus alba work = NatureServe Explorer url = http://www.natureserve.org/explorer/servlet/NatureServe?searchName=Quercus+… …
46Frazil ice — is a collection of loose, randomly oriented needle shaped ice crystals in water. It resembles slush and has the appearance of being slightly oily when seen on the surface of water. It sporadically forms in open, turbulent, supercooled water,… …
47Charnockite — Late stage charnockite dykes cutting anorthosite, Rogaland, Norway Charnockite (   …
48Plateosaurus — Unikonta Plateosaurus Temporal range: Triassic, 216–199 Ma …
49Tsakonian language — language name=Tsakonian nativename=Τσακωνικά Tsakōniká familycolor=Indo European states=Greece region=Eastern Peloponnese around Mount Parnon speakers=300 2,000 fluent fam2=Greek fam3=Doric iso2=ine|iso3=tsdTsakonian, Tzakonian or Tsakonic (Greek …
50Abelsonite — Infobox mineral name = Abelsonite category = boxwidth = boxbgcolor = imagesize = caption = formula = NiC31H32N4 molweight = color = Pink purple, reddish brown habit = Aggregates Made of numerous individual crystals or clusters. Platy Sheet forms… …
