Search results
Results from the WOW.Com Content Network
Meteoric iron, sometimes meteoritic iron, [1] is a native metal and early-universe protoplanetary-disk remnant found in meteorites and made from the elements iron and nickel, mainly in the form of the mineral phases kamacite and taenite. Meteoric iron makes up the bulk of iron meteorites but is also found in other
A meteorite is a portion of a meteoroid or asteroid that survives its passage through the atmosphere and hits the ground without being destroyed. [22] Meteorites are sometimes, but not always, found in association with hypervelocity impact craters; during energetic collisions, the entire impactor may be vaporized, leaving no meteorites.
Most iron meteorites originate from cores of planetesimals, [3] with the exception of the IIE iron meteorite group. [4] The iron found in iron meteorites was one of the earliest sources of usable iron available to humans, due to the malleability and ductility of the meteoric iron, [5] before the development of smelting that signaled the ...
A meteorite mineral is a mineral found chiefly or exclusively within meteorites or meteorite-derived material. [citation needed] This is a list of those minerals, excluding minerals also commonly found in terrestrial rocks. As of 1997 there were approximately 295 mineral species which have been identified in meteorites. [1]
This would be explained by a recovery bias; laypeople are more likely to notice and recover solid masses of metal than most other meteorite types. The abundance of iron meteorites relative to total Antarctic finds is 0.4%. [23] [24] Stony-iron meteorites constitute the remaining 1%. They are a mixture of iron-nickel metal and silicate minerals.
Previous research found that less than 1% of the meteorites came from Mars and the moon. The researchers are still exploring the source of the remaining roughly 15% of known Earth meteorites.
Using a vacuum and magnet — which can attract the metals found in meteorites — they scraped together a 95-gram (3-ounce) sample. A sample of the "Charlottetown" meteorite is pictured in the ...
Gas-rich meteorites are meteorites with high levels of primordial gases, such as helium, neon, argon, krypton, xenon and sometimes other elements. [1] Though these gases are present "in virtually all meteorites," [ 2 ] the Fayetteville meteorite has ~2,000,000 x10 −8 cc STP / g helium, [ 3 ] or ~2% helium by volume equivalent.