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ACHONDRITE METEORITES FOR SALE
Achondrite meteorites are a type of stony meteorite that lack chondrules, which are small, round particles found in most stony meteorites called chondrites. Unlike chondrites, which are composed of primitive material that hasn't changed much since the solar system's formation, achondrites are formed from differentiated parent bodies, meaning they underwent processes like melting and solidification. This makes them more similar to volcanic or igneous rocks found on Earth.
Achondrites come from asteroids, the Moon, and even Mars. They are created through complex processes, including volcanic activity or the melting and crystallization of material within their parent bodies. This gives achondrites a more complex and evolved mineral composition.
Achondrites come from asteroids, the Moon, and even Mars. They are created through complex processes, including volcanic activity or the melting and crystallization of material within their parent bodies. This gives achondrites a more complex and evolved mineral composition.
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More About Achondrites
Achondrite meteorites are a fascinating class of stony meteorites that differ from chondrites due to their lack of chondrules—spherical silicate grains typically found in chondritic meteorites. Achondrites originate from differentiated parent bodies, such as asteroids or planetary bodies like the Moon and Mars, that experienced significant heating and melting. This process led to the separation of the body’s core, mantle, and crust, giving rise to achondrites. Some achondrites, known as primitive achondrites, underwent partial melting but did not fully differentiate.
Most achondrites can be traced back to large asteroids, such as 4 Vesta, one of the most prominent sources of these meteorites. This connection was confirmed by comparing meteorite samples with data from the Dawn spacecraft mission, which visited Vesta. These meteorites are vital to our understanding of planetary formation because they provide insights into the processes that occurred in the early solar system. A rare and valuable subgroup of achondrites includes meteorites from the Moon and Mars, which were ejected from these planetary bodies by impacts.
Achondrites also play an essential role in studying solar system evolution, as they represent the remnants of ancient processes that shaped planets and other celestial bodies. Their formation histories, mineral compositions, and chemical signatures allow scientists to investigate the events that occurred in the early stages of planetary differentiation, offering clues about the internal structures of their parent bodies and the dynamics of the solar nebula.
Types Of Achondrites
Lunary Meteorites
Lunar meteorites are rocks that originated from the Moon but were ejected into space by the impact of an asteroid or comet. These fragments were then captured by Earth’s gravitational pull and subsequently fell to the surface as meteorites. Lunar meteorites are quite rare, representing less than 1% of classified meteorites. The combined weight of all known lunar meteorites is only around a single ton. Unlike meteorites from asteroids, lunar meteorites are actual pieces of the Moon’s surface and subsurface, offering valuable insights into the Moon’s geological history. View Lunar Meteorites For Sale
Martian Meteorites
Martian meteorites are rocks that originated from Mars but were blasted into space by asteroid or comet impacts and eventually landed on Earth as meteorites. These meteorites provide direct samples of Martian material, allowing scientists to study Mars' geological history without sending spacecraft to retrieve samples. They are some of the rarest of all meteorites, representing less than .5% of all classified meteorites.Martian meteorites are identified by their chemical and isotopic composition, which closely matches the data gathered by Mars rovers and landers. For example, the gases trapped in some Martian meteorites match the atmospheric composition of Mars, as measured by NASA's Viking and Curiosity missions. Most Martian meteorites belong to one of three categories: View Martian Meteorites For Sale
HED Meteorites
HED meteorites are a group of achondrite meteorites thought to originate from the asteroid 4 Vesta, one of the largest objects in the asteroid belt. The name HED refers to the three main types of meteorites in this group: Howardites, Eucrites, and Diogenites. These meteorites are composed of igneous rocks that formed from the crystallization of molten material, similar to volcanic processes on Earth. View HED Meteorites For Sale
Aubrite Meteorites
Aubrite meteorites are a rare type of achondrite meteorite primarily composed of silicate minerals rich in magnesium and very low in iron. They are often referred to as enstatite achondrites due to the high concentration of the mineral enstatite (a type of magnesium-rich pyroxene). Aubrites are thought to originate from differentiated parent bodies, possibly from the innermost regions of the solar system. View Aubrite Meteorites For Sale
Ureilite Meteorites
Ureilites are a rare variety of stony achondrite meteorites, distinguished by their unusual mineral composition. They are rich in carbon, often found as graphite or tiny diamonds formed under intense pressure from space collisions. These meteorites are believed to come from a large parent body, likely an asteroid, that underwent significant heating and impact processes.What sets ureilites apart is their combination of olivine, pyroxene, and metallic iron, with dark carbon inclusions embedded within silicate minerals. Their scarcity, along with the presence of diamonds, makes them highly prized by collectors and scientists for both their visual appeal and scientific significance. View Ureilite Meteorites For Sale
Winonaite Meteorites
Winonaites are a rare class of primitive achondrites, a type of stony meteorite that has experienced partial thermal metamorphism but not enough to undergo complete melting and differentiation like more evolved achondrites. They are seen as a transitional group between chondrites and fully differentiated achondrites.These meteorites likely originate from a common parent body that underwent mild heating. This partial melting led to their distinct textures and mineral compositions. Winonaites are composed primarily of silicate minerals like olivine and pyroxene, along with some metal and sulfides. While their overall composition is similar to ordinary chondrites, the thermal processes they experienced give them a more crystalline structure. View Winonaite Meteorites For Sale
This is a fragment of the winonaite meteorite NWA 13790. This specimen shows off its features spectacularly, displaying Windmanstätten patterns in its nickel-iron portion among clasts of handsome brown stone.
Angrite Meteorites
Angrites are an exceptionally rare type of igneous, achondrite meteorite, believed to be some of the oldest solid objects in the solar system, dating back around 4.56 billion years. Only about fifty angrite meteorites have been discovered, with a total known mass of under 40 kilograms. Angrites are composed mainly of minerals such as augite, olivine, and anorthite, with high levels of calcium and aluminum. The exact origin of angrites remains uncertain. Some scientists, based on reflectance spectra, propose angrites may have originated from the asteroid 289 Nenetta or 3819 Robinson. Other theories suggest they could come from a now-destroyed parent body or even may have originated from the planet Mercury, though that theory has mostly be discredited. View Angrite Meteorites For Sale
Related Categories
Meteorites
Chondrites
HED Meteorites - From 4 Vesta
Iron Meteorites
Lunar Meteorites
Martian Meteorites
Mesosiderites
Pallasites
Tektites & Impactites