Andura

Last updated
Andura
Type Chondrite
Class Ordinary chondrite
Group H6
Country India
Region Maharashtra
Coordinates 20°53′N76°52′E / 20.883°N 76.867°E / 20.883; 76.867 Coordinates: 20°53′N76°52′E / 20.883°N 76.867°E / 20.883; 76.867 [1]
Observed fall Yes
TKW 17,9 kg

Andura is an H chondrite meteorite that fell to Earth on August 9, 1939 in Maharashtra, India.

H chondrite

The H type ordinary chondrites are the most common type of meteorite, accounting for approximately 40% of all those catalogued, 46% of the ordinary chondrites, and 44% of the chondrites. The ordinary chondrites are thought to have originated from three parent asteroids, whose fragments make up the H chondrite, L chondrite and LL chondrite groups respectively.

Meteorite piece of solid matter from outer space that has hit the earth

A meteorite is a solid piece of debris from an object, such as a comet, asteroid, or meteoroid, that originates in outer space and survives its passage through the atmosphere to reach the surface of a planet or moon. When the object enters the atmosphere, various factors such as friction, pressure, and chemical interactions with the atmospheric gases cause it to heat up and radiate that energy. It then becomes a meteor and forms a fireball, also known as a shooting star or falling star; astronomers call the brightest examples "bolides". Meteorites vary greatly in size. For geologists, a bolide is a meteorite large enough to create an impact crater.

Maharashtra State in western, southern and central India

Maharashtra is a state considered to be part of western, central, southern and south-central India. It is the second-most populous state and third-largest state by area in India. Spread over 307,713 km2 (118,809 sq mi), it is bordered by the Arabian Sea to the west, the Indian states of Karnataka and Goa to the south, Telangana and Chhattisgarh to the east, Gujarat and Dadra and Nagar Haveli to the north west, and Madhya Pradesh to the north. It is also the world's second-most populous subnational entity. It was formed by merging the western and south-western parts of the Bombay State, Berar and Vidarbha, and the north-western parts of the Hyderabad State and splitting Saurashtra by the States Reorganisation Act. It has over 112 million inhabitants and its capital, Mumbai, has a population around 18 million making it the most populous urban area in India. Nagpur hosts the winter session of the state legislature. Pune is known as 'Oxford of the East' due to the presence of several well-known educational institutions.

Contents

Classification

It is classified as ordinary chondrite and belongs to the petrologic type 6, thus was assigned to the group H6. [1]

Ordinary chondrite

The ordinary chondrites are a class of stony chondritic meteorites. They are by far the most numerous group and comprise about 87% of all finds. Hence, they have been dubbed "ordinary". The ordinary chondrites are thought to have originated from three parent asteroids, with the fragments making up the H chondrite, L chondrite and LL chondrite groups respectively.

Related Research Articles

Chondrite class of stony meteorites

Chondrites are stony (non-metallic) meteorites that have not been modified due to melting or differentiation of the parent body. They are formed when various types of dust and small grains that were present in the early solar system accreted to form primitive asteroids. They are the most common type of meteorite that falls to Earth with estimates for the proportion of the total fall that they represent varying between 85.7% and 86.2%. Their study provides important clues for understanding the origin and age of the Solar System, the synthesis of organic compounds, the origin of life and the presence of water on Earth. One of their characteristics is the presence of chondrules, which are round grains formed by distinct minerals, that normally constitute between 20% and 80% of a chondrite by volume.

IIE iron meteorite

The iron meteorites of the IIE chemical type are octahedrites of various coarseness, most of which contain numerous inclusions of recrystallized stony silicates.

L chondrite

The L type ordinary chondrites are the second most common group of meteorites, accounting for approximately 35% of all those catalogued, and 40% of the ordinary chondrites. The ordinary chondrites are thought to have originated from three parent asteroids, with the fragments making up the H chondrite, L chondrite and LL chondrite groups respectively.

LL chondrite group of chondrites with low iron and low metal content

The LL chondrites are a group of stony meteorites, the least abundant group of the ordinary chondrites, accounting for about 10–11% of observed ordinary-chondrite falls and 8–9% of all meteorite falls. The ordinary chondrites are thought to have originated from three parent asteroids, with the fragments making up the H chondrite, L chondrite and LL chondrite groups respectively. The composition of the Chelyabinsk meteor is that of a LL chondrite meteorite. The material makeup of Itokawa, the asteroid visited by the Hayabusa spacecraft which landed on it and brought particles back to Earth also proved to be type LL chondrite.

Qidong is a L/LL5-an chondrite meteorite fallen in 1982 in China. After detonation a single individual specimen was found in the field. Other circumstances of fall and recovery were not reported.

Aarhus (meteorite) meteorite

Aarhus is an H chondrite meteorite that fell to earth on 2 October 1951 at 18:15 in Aarhus, Denmark. The meteor split just before the otherwise undramatic impact and two pieces were recovered. They are known as Aarhus I and Aarhus II. Aarhus I was found in the small woodland of Riis Skov, just a few minutes after impact.

Archie is an H chondrite meteorite that fell to earth on August 10, 1932 in Archie, Missouri, United States.

Agen is an H chondrite meteorite that fell to earth on September 5, 1814, in Aquitaine, France.

Allegan (meteorite) meteorite

Allegan is an H chondrite meteorite that fell to earth on July 10, 1899 in Michigan, United States. It belongs to the petrologic type 5. As of 1964, it was one of only seven known meteorites to land in Michigan. Allegan weighed around fifty pounds after its landing.

Ambapur Nagla is an H chondrite meteorite that fell to earth on May 27, 1895 in Uttar Pradesh, India.

Anlong is an H chondrite meteorite that fell to earth on May 2, 1971 in Guizhou, China.

Arbol Solo (meteorite)

Arbol Solo is an H chondrite meteorite that fell to earth on September 11, 1954 in the province of San Luis, Argentina.

Arroyo Aguiar (meteorite)

Arroyo Aguiar is an H chondrite meteorite that fell to earth during the summer of 1950 in the province of Santa Fe, Argentina.

Assisi is an H chondrite meteorite that fell to earth at 7am on May 24, 1886 in Umbria, Italy.

Akbarpur is an H chondrite meteorite that fell to earth on April 18, 1838, in Uttar Pradesh, India.

Ankober is an H chondrite meteorite that fell to Earth on July 7, 1942 in Shewa, Ethiopia.

Avanhandava (meteorite)

Avanhandava is an H chondrite meteorite that fell to earth in 1952 in São Paulo, Brazil.

Claxton is an L6 chondrite meteorite that fell to earth on December 10, 1984 in Georgia, United States. It is the only known meteorite to directly strike a mailbox.

References

  1. 1 2 Meteoritical Bulletin Database: Andura

See also

This is a glossary of terms used in meteoritics, the science of meteorites.


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