spinel materials
71Superplume — Hotspot Vulkanismus wird durch Plumes aus Quellen im tieferen Erdmantel gespeist Mantelplume (kurz auch Plume, aus dem englischen/französischen für „Helmbusch“, „Federschmuck“, „Rauchfahne“) ist ein geowissenschaftlicher Fachbegriff, der einen… …
72Lustre (mineralogy) — Lustre (or luster) is a description of the way light interacts with the surface of a crystal, rock, or mineral. The word lustre traces its origins back to the Latin word lux, meaning light , and generally implies radiance, gloss, or brilliance. A …
73Emery (mineral) — Emery is a very hard rock type used to make abrasive powder. It largely consists of the mineral corundum (aluminum oxide), mixed with other species such as the iron bearing spinels hercynite and magnetite, and also rutile (titania). Industrial… …
74ferrite — /fer uyt/, n. 1. Chem. a compound, as NaFeO2, formed when ferric oxide is combined with a more basic metallic oxide. 2. Metall. the pure iron constituent of ferrous metals, as distinguished from the iron carbides. [1875 80; < L ferr(um) iron +… …
75stone — Synonyms and related words: Irish confetti, Lydian stone, Tarmac, Tarvia, aa, abyssal rock, acorn, adamant, adamantine, adobe, agate, alexandrite, amethyst, anklet, anthraconite, aplite, aquamarine, arch, armlet, ashlar, asphalt, aventurine,… …
76Facet — Facets are flat faces on geometric shapes. The organization of naturally occurring facets was key to early developments in crystallography, since they reflect the underlying symmetry of the crystal structure. Gemstones commonly have facets cut… …
77Barium ferrite — Barium ferrite, abbreviated BaFe, is the chemical compound with the formula BaFe2O4. This and related ferrite materials are components in magnetic stripe cards. BaFe is described as Ba2+(Fe3+)2(O2 )4. The Fe3+ centers, with a high spin d5… …
78Indium(III) sulfide — Other names indium sesquisulfide, diindium trisulphide Identifiers CAS number …
79Manganese(III) oxide — Other names dimanganese trioxide, manganese sesquioxide, manganic oxide …
80CoorsTek — CoorsTek, Inc. Type Private Industry Ceramics, Semiconductors Founded Golden, Colorado, U.S. (1920) Founder(s) Adolph Coors, Sr. Headquarters …
