The Haverö Meteorite
Abstract
The meteorite Haverö, which fell on 2 August 1971 in Finland is a representative of a rare, but highly interesting group of stony meteorites-ureitites. Like other ureilites it is enriched in carbon (up to 2%) chiefly represented by diamond and graphite. The meteorite is strongly recrystallized; as a result its chief mineral component-olivine-has been transformed into a mosaic of small grains among which kamacite with an extremely low Ni content (∼ 1.7%) is distributed. Polysynthetic twinning is characteristic of pyroxene grains. The meteorite is penetrated by a system of cavities being stretched approximately in one direction. The cavities are sometimes occupied by kamacite plates containing ∼4% Ni. The peculiarities of the mineral and chemical composition of the meteorite indicate that its material had formed during a disequilibrium process. The content of cosmogenic isotopes witnesses to an unusual orbit of the meteorite.
- Publication:
-
Space Science Reviews
- Pub Date:
- May 1976
- DOI:
- 10.1007/BF00169522
- Bibcode:
- 1976SSRv...18..749V
- Keywords:
-
- Abundance;
- Meteoritic Composition;
- Minerals;
- Radioactive Isotopes;
- Rare Gases;
- Trace Elements;
- Ureilites;
- Achondrites;
- Cosmology;
- Electron Probes;
- Microanalysis;
- Neutron Activation Analysis;
- Tables (Data);
- Lunar and Planetary Exploration