Iron meteorite - Wikipedia
网页Iron meteorites, also called siderites or ferrous meteorites, are a type of meteorite that consist overwhelmingly of an iron–nickel alloy known as meteoric iron that usually consists of two mineral phases: kamacite and taenite.
Widmanstätten pattern - Wikipedia
网页Widmanstätten patterns, also known as Thomson structures, are figures of long phases of nickel–iron, found in the octahedrite shapes of iron meteorite crystals and some pallasites. Iron meteorites are very often formed from a single crystal of iron-nickel alloy, or sometimes a number of large crystals that may be many meters in size, and ...
Iron Meteorites: Composition, Age, and Origin
网页Iron meteorites consist almost entirely of siderophile (iron-loving) elements like nickel and cobalt, which readily dissolve in metallic iron, and chalcophile (sulfur-loving) elements like copper and silver.
Iron meteorite | Meteorite Classification, Composition, Structure
网页iron meteorite, any meteorite consisting mainly of iron, usually combined with small amounts of nickel. When such meteorites, often called irons, fall through the atmosphere, they may develop a thin, black crust of iron oxide that quickly weathers to rust.
Iron Meteorites: Origin, Classification, Pictures - Geology.com
网页Iron meteorites typically consist of approximately 90 to 95% iron, with the remainder comprised of nickel and trace amounts of heavy metals including iridium, gallium and sometimes gold. They are classified using two different …
Types of meteorites - Natural History Museum
网页There are three main groups of meteorite: iron meteorites, stony-iron meteorites and stony meteorites. They differ in their amount of iron-nickel metal they contain and what they reveal about the early solar system.
Meteorite - Chondrites, Achondrites, Iron-Nickel | Britannica
网页2024年8月14日 — Meteorites traditionally have been divided into three broad categories—stony meteorites (or stones), iron meteorites (irons), and stony iron meteorites (stony irons)—on the basis of the proportions of rock-forming minerals and nickel-iron (also called iron-nickel) metal alloy they contain. Stony meteorites make up about 94 percent of all ...
Meteorite - Chondrites, Irons, Stony-Irons | Britannica
网页2024年8月14日 — Iron meteorites are principally composed of two nickel-iron minerals, nickel-poor kamacite and nickel-rich taenite. The abundances of those two minerals strongly influence the structure of iron meteorites. At one extreme is the class known as hexahedrites, which are composed almost entirely of kamacite.
Iron meteorites – Buseck Center for Meteorite Studies
网页Most iron meteorites likely originated in the cores of large asteroids, and are composed almost entirely of nickel-iron alloy, which is also a primary component of the Earth's core. Even though iron meteorites account for less than 5% of observed falls, they are more easily recognized than other types of meteorites.
Iron Meteorites: Composition, Age, and Origin - NASA/ADS
网页A typical iron meteorite contains 5-10% nickel, ~0.5% cobalt, 0.1-0.5% phosphorus, 0.1-1% sulfur and over 20 other elements in trace amounts. A few percent of iron meteorites also contain silicate inclusions, which should have readily separated from molten metal because of their buoyancy.
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