|Latitude & Longitude (WGS84):||47° 43' North , 5° 22' East|
|Latitude & Longitude (decimal):||47.71667,5.36667|
|Locality type:||Meteorite Fall Location|
|Meteorite Class:||Chassignite meteorite|
|Meteoritical Society Class:||Martian (chassignite)|
|Metbull:||View entry in Meteoritical Bulletin Database|
|Köppen climate type:||Cfb : Temperate oceanic climate|
|Other/historical names associated with this locality:||Champagne-Ardenne|
Martian Meteorite (dunite), Chassignite Prototype
Fell, 3 October 1815; 4 kg
After detonations, one stone was recovered and stored for posterity. Chassigny is compositionally dominated by olivine (Fa32), but contains several minerals indicative of its original mafic/ultramafic origins in a moderately hydrous and moderately oxidized environment. These features are significantly different from most igneous, differentiated meteorites ['achondrites'] apparently from several airless worlds (including Vesta and the moon). Augite, chromite, rutile, spinel, and several other accessories to the dominant olivine bespeak an original origin at some depth in a magma chamber. Amphiboles (e.g. kaersutite) and the particular sulfides (pentlandite, pyrite, marcasite) are much more typical of earth-like environments than of the original parent bodies (OPB) of most achondrites. Chassigny, however, is not an earth rock. Its oxygen isotope ratios make it a member of the Shergotty-Nakhla-Chassigny (SNC) Clan. And the SNC Clan are Martian Meteorites - a conclusion first established when it was discovered that several of the meteorites contained small gas inclusions virtually identical to those detected by the Viking Landers in the Martian soils.
Chassigny was the first Martian meteorite to be discovered and is now regarded as the prototype for three martian 'chassignites.' The chassignites are only a small subset of the nearly 150 martian meteorites identified by 2015. Some shock features and melt inclusions appear to be derived from (at least one) impact events. Curiously enough, however, while the chassignites appear to have been derived from deep beneath the Martian crust, they are generally not as shocked as some of the Martian shergottites produced nearer to the Martian surface.
22 valid minerals.
Meteorite/Rock Types Recorded
Select Rock List TypeAlphabetical List Tree Diagram
Entries shown in red are rocks recorded for this region.
This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.
Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org
145 - 201.3 Ma
|Mesozoic sedimentary rocks|
Age: Jurassic (145 - 201.3 Ma)
Lithology: Sedimentary rocks
Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. 
174.1 - 201.3 Ma
|mostly detrital deposit|