What Is A Chondrite

Where do chondrites come from?

Like most meteorites chondrites originated in the asteroid belt where collisions and gravitational perturbations put them into Earth-crossing orbits. (Ordinary chondrites in particular are from S-class asteroids.) Chondrites formed about 4.56 billion years ago as part of the formation of their parent asteroids.

Are chondrite meteorites valuable?

A common stony meteorite called a chondrite can sell for $25 or less but a slice of iron–nickel pallasite laced with olivine crystals can easily fetch a thousand times that. … A 4-pound lunar meteorite the most expensive ever auctioned sold for $330 000 in 2012.

What type of rock is a chondrite?

Chondrite Meteorite is part sedimentary and part igneous . As the oldest rock in the Museum it formed about 4.5 billion years ago.

Are chondrites from asteroids?

The various chondrite groups likely originated on separate asteroids or groups of related asteroids. Each chondrite group has a distinctive mixture of chondrules refractory inclusions matrix (dust) and other components and a characteristic grain size.

How old are ordinary chondrites?

Most ordinary chondrites have exposure ages of less than 50 million years and most carbonaceous chondrites less than 20 million years. Achondrites have ages that cluster between 20 and 30 million years. Iron meteorites have a much broader range of exposure ages which extend up to about two billion years.

What is special about carbonaceous chondrites?

Carbonaceous chondrites are arguably the most important class of meteorite for three reasons. First members of the CI group have the most primitive bulk compositions of any chondrite—i.e. their nonvolatile element compositions are very similar to that of the Sun.

How do you identify chondrites?

Nickel Iron: Most chondrites contain tiny flecks of nickel iron sprinkled throughout. For this reason meteorite hunters often use metal detectors in areas where meteorites are likely to be found. A chondrite’s high nickel-iron content makes it adhere to a strong magnet.

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Are chondrites magnetic?

The most strongly magnetic ordinary chondrite phases are FeNi alloys (e.g. Nagata 1979) which are responsible for the bulk of ordinary chondrite remanence and the major part of the magnetic susceptibility. … For comparison the observed ordinary chondrite range is 3 to 480 (10−6 m3/kg).

How common are carbonaceous chondrites?

The C chondrites represent only a small proportion (4.6%) of meteorite falls.

How do you tell if a rock is a meteorite?

Meteorites have several properties that help distinguish them from other rocks:
  1. Density: Meteorites are usually quite heavy for their size since they contain metallic iron and dense minerals.
  2. Magnetic: Since most meteorites contain metallic iron a magnet will often stick to them.
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What is the rarest meteorite?

The Winchcombe meteorite aptly named after the Gloucestershire town where it landed is an extremely rare type called a carbonaceous chondrite. It is a stony meteorite rich in water and organic matter which has retained its chemistry from the formation of the solar system.

What is the most expensive type of meteorite?

Brenham Meteorite
The most expensive meteorite according to the auction catalog is the Brenham Meteorite Main Mass and is expected to bring in 750 000 to 1.2 million dollars. The 1 433 pound specimen was found in 2005 in Kiowa County Kansas.Apr 6 2016

Where did most of Earth’s water come from?

Multiple geochemical studies have concluded that asteroids are most likely the primary source of Earth’s water. Carbonaceous chondrites–which are a subclass of the oldest meteorites in the Solar System–have isotopic levels most similar to ocean water.

What are chondrites and chondrules?

Chondrites are stony meteorites. They’re the most common and probably the most fascinating type of meteorite. … Chondrules are only found in meteorites. They’re over 4 billion years old — older than the Earth and other planets.

How old is meteorite 1 How old is meteorite 2?

And since its discovery in 2003 scientists have speculated it’s one of Earth’s oldest meteorite craters. Now a team of researchers has pinned down the crater’s precise age revealing it’s about 2.23 billion years old.

How did carbonaceous chondrites contain water?

Carbonaceous chondrites come from asteroidal bodies of smaller than hundred kilometres that never melted or experienced internal chemical differentiation as planets did. … That water seems to come from two types of objects formed at different distances from the sun: hydrated asteroids and comets.

What is the primary difference between a chondrite and an Achondrite?

Whats the difference between a chondrite and an achondrite? Chondrites are a type of stony meteorite with chondrules whereas achondrites are a type of stony meteorite that contain no chondrules.

What causes the meteor showers we witness on earth?

When the earth intersects this orbit in its annual trip it can run into this debris which burns up on entry into the earth’s atmosphere producing a visible shower of meteors. METEOR SHOWERS. This one seen from Henry Coe State Park Calif. on November 18 1995 resulted from Leonid crossing Earth’s path.

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Are carbonaceous chondrite meteorites from another solar system?

Meteorites Comets and Planets

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Carbonaceous chondrites are derived from very diverse asteroids which probably formed in very different locations.

What is a carbonaceous chondrite made of?

Among the stony meteorites are the chondrites which contam small round spheres called chondrules. These small spherules are principally made up of olivine and pyroxene (minerals made up of Mg Fe and silicate) The carbonaceous chondrites are composed not only of inorganic minerals but have a high abundance of carbon.

What to do if you find a meteorite?

I urge you to saw your rock in two or cut off an “end.” Use a tile saw or bring it to a local rock shop where they are likely to have a lapidary saw. Most (89%) stony meteorites are ordinary chondrites. Metal grains are easily visible on the sawn face of an ordinary chondrite. If you contact me use email.

What are the 3 things that stick to magnets?

Iron nickel and cobalt are strongly attracted to magnets. Scientists call these metallic elements “ferromagnetic” because of this strong attraction.

What are the components of chondrites?

Chondrites are broadly ultramafic in composition consisting largely of iron magnesium silicon and oxygen. The most abundant constituents of chondrites are chondrules which are igneous particles that crystallized rapidly in minutes to hours.

What do carbonaceous chondrites tell us?

“Carbonaceous chondrites provide clues about the delivery of water to Earth: How meteorites retained water and organic material inside them before reaching our planet.” ScienceDaily.

What is the largest carbonaceous chondrite ever found on Earth?

The Allende meteorite

The Allende meteorite is the largest carbonaceous chondrite ever found on Earth. The fireball was witnessed at 01:05 on February 8 1969 falling over the Mexican state of Chihuahua.

What is Campo del Cielo meteorite?

The Campo del Cielo refers to a group of iron meteorites that are found in an area of the same name about 1000 km northwest of Buenos Aires Argentina between the provinces of Chaco and Santiago del Estero.

Where is the best place to find meteorites?


The best hunting grounds are large barren expanses where a dark rock — meteorites tend to be blackish — is easy to spot. Deserts such as Southern California’s Mojave Desert and icy regions such as Antarctica are ideal.

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How can you tell a meteor from a slag?

Meteorites are Solid not Porous

Slag is one of the materials that is often confused for meteorites. This slag however will usually be porous or even bubbly which is a clue that it is not a real space rock. Meteorites in some cases may exhibit vesicles but they are not porous or bubbly in appearance.

Can meteors not be magnetic?

Magnetism: A majority of meteorites are magnetic. If your specimen isn’t magnetic it probably isn’t a meteorite. … Weight Test: Meteorites are much more dense than normal earth rocks. Fusion Crust Test: Fusion crust is a thin dark rind formed on a meteorite as it streaks through our atmosphere.

Is it legal to own a meteorite?

Yes. It is completely legal to own a meteorite at least in the United States. … While it is legal to own buy and sell meteorite pieces first we have to answer who do they belong to when they first fall.

How much is a nickel iron meteorite worth?

Meteorites are quite valuable worth as much as $1 000 per gram according to the LiveScience website. Kellyco Metal Detectors posted on eBay that it can sell for $300 per gram or more — meaning 1 pound could be worth $1 million.

What is the most expensive thing in the universe?

The most expensive man-made object is the International Space Station (ISS). Its final cost will be over $100 billion (£66.7 billion).

What is the most common meteorite type to fall to Earth?

Ordinary chondrites
Ordinary chondrites are the most common type of stony meteorite accounting for 86 percent of all meteorites that have fallen to Earth. They are named for the hardened droplets of lava called chondrules embedded in them.Aug 1 2014

What is the largest meteorite ever found?

But the largest meteorite on earth is this monster named Hoba. It is located in Namibia and has never been moved. Hoba is nearly twice the weight of its nearest rival El Chaco at 60 tonnes. This makes it the biggest naturally occurring piece of iron known on Earth’s surface at 6.5 square metres.Feb 23 2017

Lesson 8: Chondrites…briefly

chondrite chondrules and primitive meteorites

Carbonaceous chondrite – Object of the Month – Lapworth Museum of Geology

Carbonaceous chondrite Meteorite