stony meteorite


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stony meteorite

(stone) A type of meteorite that consists of silicate minerals generally with some nickel-iron. The two main subgroups are termed chondrites and achondrites, depending on the presence or absence of chondrules. The great majority (about 95%) of meteorites seen to fall to Earth are stony meteorites, and most of these are chondrites.

stony meteorite

[′stō·nē ′mēd·ē·ə‚rīt]
(geology)
Any meteorite composed principally of silicate minerals, especially olivine, pyroxene, and plagioclase. Also known as aerolite; asiderite; meteoric stone; meteorolite; stone.
References in periodicals archive ?
Stony meteorites are made of planetary material, silicates (sand), minerals, rocks and very little metal.
Most meteorites are stony and of the stony meteorites, almost all (90 percent) are what are called ordinary chondrites.
New evidence from old rocks suggests that many of the precious metals mined today were delivered to the planet by stony meteorites called chondrites in a bombardment that lasted for hundreds of millions of years.
Small, stony meteorites typically break up high in the atmosphere (SN: 7/19/03, p.
Ground-based observations indicate that Vesta represents the only known parent of a class of stony meteorites called basaltic achondrites.
The relative abundance of certain long-lived radioactive isotopes in stony meteorites suggests that the galaxy ranges in age from 9 to 15 billion years.