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Chondrites are stony meteorites that have not been modified due to melting or differentiation of the parent body. In other words, these rocks are roughly indicative of what was formed over 4.5 billion years ago at the formation of the solar system. Equilibrated chondrites refers to those which have become essentially homogeneous in mineral composition due to thermal metamorphism. Small chondrules are often no longer recognizable.
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What is the mean density of a meteor?
They're probably all slightly different, but the various classes of meteorites will have different densities. Most of them are stony meteorites, but a few are metallic, and some are chondrites.
What are the different kinds of meteors?
Most meteorites are stony meteorites, divided into the chondrites (containing small round particles) and the achondrites (lacking these particles). Others are the more rare, metallic meteorites. A small number (about 5%) of meteorites have both stony and metallic features, and these are referred to as "stony-iron" meteorites, which contain iron, nickel, and/or silicates. Another meteoric form is tektites, containing volcanic-type glasses formed from the high temperatures before and after impact.
What are the three types of asteroids?
A meteoroid which reaches the ground is called a meteorite. A small number of meteorites have been found which scientists believe originated on the Moon or Mars. The composition of meteorites gives us valuable information about the universe. Meteorites typically fall into one of five categories.IronsThese meteorites are made of a crystalline iron-nickel alloy that resembles the outer core of the earth. Similar in structure to some asteroids (type M), 5.7% of meteorites are irons.Stony-IronsThese meteorites are mixtures of iron-nickel alloy and non-metallic mineral matter. Scientists believe they are like the material which would be found where the Earth's core meets the mantle. 1.5% of meteorite falls are stony irons.Stony MeteoritesThere are three subclasses of stony meteorites:Chondrites: These meteorites are the most numerous, comprising 85.7% of all meteorites found. They are characterized by chondrules: small (average diameter of 1 millimeter) spheres of formerly melted minerals that have melded with other minerals to form a solid rock. Chondrites are believed to be among the oldest rocks in the solar system and are similar in composition to the mantles and crusts of earth and the other terrestrial planets.Carbonaceous Chondrites: These meteorites are very rare and contain elemental carbon, the basic building block for life on earth.Achondrites: Stony meteorites without chondrules, representing about 7.1% of meteorites. Scientists believe that some of these meteorites originate on the surface of the Moon or Mars.From http://www.odec.ca/projects/2006/jauc6s2/kinds.htm
A rock from space that hits the earth is called a?
Space rocks floating through the sky are called meteoroids. When they are passing through the Earth's atmosphere and are heated to incandescence, they are called "meteors". If they crash to Earth, they are called "meteorites". Not all meteors survive to become meteorites. Many meteors burn up completely in the Earth's atmosphere.
What element is present in meteorites and the Sun?
The person who said it was hydrogen was wrong. Its helium,because all stars are composed primarily of hydrogen. Stars can also contain some other elements such as helium, which is the second most abundant element in stars.
What is a name of a meteorite?
Meteorites are named according to their composition as ordinary chondrites, carbonaceous chondrites, achondrites, iron meteorites, and stony-irons.
What are the two types of stony meteorites?
Chondrites and Achondrites
What are the sub types of stony meteorites?
Chondrites and Achondrites.
What has the author Derek W G Sears written?
Derek W. G. Sears has written: 'The origin of chondrules and chondrites' -- subject(s): Chondrites (Meteorites), Chondrules
What has the author A Bischoff written?
A. Bischoff has written: 'Catalog of Al-rich chondrules, inclusions, and fragments in ordinary chondrites' -- subject(s): Catalogs and collections, Chondrites (Meteorites), Chondrules
Do Carbonaceous chondrites contain simple amino acids?
Yes
What are chondrites?
A common type of meteorite that contains chondrules. Chondrites come from asteroids that did not melt when formed and are designated as H, L, LL, E, or C depending on chemical compositions. The H, L, and LL types are called ordinary chondrites. The L chondrites are composed of silicate minerals (mostly olivine and pyroxene, but feldspar as well), metallic nickel-iron, and iron sulfide (called troilite). Most L chondrites are severely shocked-damaged, probably by a large impact on the asteroid in which they formed. The C (or carbonaceous) chondrites are the most primitive meteorites. They contain water-bearing minerals and carbon compounds including a variety of organic molecules such as amino acids.For the source and more detailed information concerning your request, click on the related links section (Answers.com) indicated below.
What is true of the amino acids that might have been delivered to Earth within carbonaceous chondrites?
The proportion of the amino acids are similar to those produced in the Miller-Urey experiment.
What are 3 main types of meteoroids?
stony - rocksmetallic - a nickel iron alloycarbonaceous chondrites - contain large amounts of organic chemicals
The remains of extraterrestial particles that are found on Earth's surface is called?
Meteorites. There are many different kinds: chondrites, achondrites. But simply put extraterrestril particles are meteorites.
What is the mean density of a meteor?
They're probably all slightly different, but the various classes of meteorites will have different densities. Most of them are stony meteorites, but a few are metallic, and some are chondrites.
What is hydrogen at freezing point?
At freezing point hydrogen is a liquid, equilibrated with its solid state of matter. Hydrogen: Melting point 14.01 K, -259.14 °C, -434.45 °F Boiling point 20.28 K, -252.87 °C, -423.17 °F
