Imilac

Meteorite
Name= Imilac


Image_caption= 3747g full slice from the Imilac main mass
Image_width=
Type= Stony-iron
Class= Pallasite
Group= Main Group Pallasite (MGP)
Structural_classification=
Composition= 90% Fe, 9.9% Ni, 21.1 ppm Ga, 46.0 ppm Ge, 0.071 ppm Ir
Shock=
Weathering=
Country= Chile
Region= Atacama Desert, Atacama Region
Lat_Long= coord|24|12|12|S|68|48|24|W|display=inline,title
Observed_fall= No
Fall_date=
Found_date= 1822
TKW= 920 kg


Image2_caption=

Imilac is the name given to a meteorite found in the Atacama Desert of Northern Chile in 1822.

Classification

Imilac is classified as a stony-iron pallasite. Imilac specimens are highly prized by meteorite collectors due to its high concentration of beautiful olivine grains.

Strewn field

Numerous masses were found in a valley to the SW of Imilac. The total weight of the Imilac fall is estimated to be around 1000 kg. The primary strewn field is long about 8 km [ [http://articles.adsabs.harvard.edu/full/1989LPICo.712..192P Pedersen, H., Lindgren, H., & Canut de Bon, C. "Strewn-fields of Imilac and Vaca Muerta".] ] .

Specimens

Due weathering, intact olivine grains are present only on large specimens (over 1 kg). Smaller samples contains darker alterated olivine cristals. On the market there are also a lot of very small (few grams) Imilac individuals called "metal skeletons": they are severely weathered and lack olivine grains.

External links

[http://tin.er.usgs.gov/meteor/metbull.php?sea=imilac&sfor=names&ants=&falls=&stype=contains&lrec=50&
]

Notes