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Imilac meteorite, Imilac, Augusta Victoria, Antofagasta Province, Antofagasta Region, Chile

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Latitude & Longitude (WGS84): 24° 12' 11'' South , 68° 48' 24'' West
Latitude & Longitude (decimal): -24.20333,-68.80667
GeoHash:G#: 67xn63bt2
Locality type:Meteorite Fall Location
Meteorite Class:PMG pallasite meteorite
Meteoritical Society Class:Pallasite, PMG
Metbull:View entry in Meteoritical Bulletin Database
Köppen climate type:BWk : Cold desert climate


Pallasite, main group (PMG)
Find, 1822; 920 kg

Since its discovery in 1822 several pieces of what were first believed to be independent finds (e.g., Ollague, Salta) have been deemed to be separated pieces of a single fall. Kamacite has prominent Neumann bands due to preterrestrial shock(s.)



Ref.: Am Min 53: 508.

Alternative Label Names

This is a list of additional names that have been recorded for mineral labels associated with this locality in the minID database. This may include previous versions of the locality name hierarchy from mindat.org, data entry errors, and it may also include unconfirmed sublocality names or other names that can only be matched to this level.

IMILAC, ANTOFAGASTA, CHILE
IMILAC, CHILE

Regions containing this locality

Atacama Desert, Chile

Desert - 499 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


8 valid minerals.

Meteorite/Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Barringerite
Formula: (Fe,Ni)2P
Reference: Handbook of Mineralogy
Chromite
Formula: Fe2+Cr3+2O4
Reference: Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam, London: New York. 245 pages.
'Fayalite-Forsterite Series'
Reference: - Pedersen, H.; Lindgren, H.; Canut de Bon, C. : "Strewn-fields of Imilac and Vaca Muerta", Abstracts and Program for the 52nd Annual Meeting of the Meteoritical Society, 1989
Iron
Formula: Fe
Reference: - Pedersen, H.; Lindgren, H.; Canut de Bon, C. : "Strewn-fields of Imilac and Vaca Muerta", Abstracts and Program for the 52nd Annual Meeting of the Meteoritical Society, 1989
Iron var: Kamacite
Formula: (Fe,Ni)
Reference: Buseck, P.R. (1977) Pallasite meteorites-mineralogy, petrology, and geochemistry. Geochim Cosmochim Acta 41:711-740.; Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam, London: New York. 245 pages.
'PMG pallasite meteorite'
Reference: Meteoritical Society Database
Schreibersite
Formula: (Fe,Ni)3P
Reference: Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam, London: New York. 245 pages.
Stanfieldite
Formula: Ca4Mg5(PO4)6
Reference: Am Min 53: 508
Taenite
Formula: (Fe,Ni)
Reference: Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam, London: New York. 245 pages.
Tetrataenite
Formula: FeNi
Reference: Jijin Yang, Joseph I. Goldstein & Edward R. D. Scott (2010) Main-group pallasites: Thermal history, relationship to IIIA irons and origin. Geochimica et Cosmochimica Acta 74:4471-4492.
Troilite
Formula: FeS
Reference: Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam, London: New York. 245 pages.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Barringerite'1.BD.10(Fe,Ni)2P
'Iron'1.AE.05Fe
var: Kamacite1.AE.05(Fe,Ni)
Schreibersite1.BD.05(Fe,Ni)3P
Taenite1.AE.10(Fe,Ni)
Tetrataenite1.AE.10FeNi
Group 2 - Sulphides and Sulfosalts
Troilite2.CC.10FeS
Group 4 - Oxides and Hydroxides
'Chromite'4.BB.05Fe2+Cr3+2O4
Group 8 - Phosphates, Arsenates and Vanadates
Stanfieldite8.AC.70Ca4Mg5(PO4)6
Unclassified Minerals, Rocks, etc.
'Fayalite-Forsterite Series'-
PMG pallasite meteorite-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Barringerite1.1.21.1(Fe,Ni)2P
Iron
var: Kamacite
1.1.11.1(Fe,Ni)
Schreibersite1.1.21.2(Fe,Ni)3P
Taenite1.1.11.2(Fe,Ni)
Tetrataenite1.1.11.3FeNi
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Troilite2.8.9.1FeS
Group 7 - MULTIPLE OXIDES
AB2X4
Chromite7.2.3.3Fe2+Cr3+2O4
Group 38 - ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
(AB)3(XO4)2
Stanfieldite38.3.5.1Ca4Mg5(PO4)6
Unclassified Minerals, Rocks, etc.
'Fayalite-Forsterite Series'-
Iron-Fe
'PMG pallasite meteorite'-

List of minerals for each chemical element

OOxygen
O ChromiteFe2+Cr23+O4
O StanfielditeCa4Mg5(PO4)6
MgMagnesium
Mg StanfielditeCa4Mg5(PO4)6
PPhosphorus
P Barringerite(Fe,Ni)2P
P Schreibersite(Fe,Ni)3P
P StanfielditeCa4Mg5(PO4)6
SSulfur
S TroiliteFeS
CaCalcium
Ca StanfielditeCa4Mg5(PO4)6
CrChromium
Cr ChromiteFe2+Cr23+O4
FeIron
Fe Barringerite(Fe,Ni)2P
Fe ChromiteFe2+Cr23+O4
Fe IronFe
Fe Iron (var: Kamacite)(Fe,Ni)
Fe Schreibersite(Fe,Ni)3P
Fe Taenite(Fe,Ni)
Fe TetrataeniteFeNi
Fe TroiliteFeS
NiNickel
Ni Barringerite(Fe,Ni)2P
Ni Iron (var: Kamacite)(Fe,Ni)
Ni Schreibersite(Fe,Ni)3P
Ni Taenite(Fe,Ni)
Ni TetrataeniteFeNi

Regional Geology

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

Quaternary
0 - 2.588 Ma



ID: 3186157
Cenozoic sedimentary rocks

Age: Pleistocene (0 - 2.588 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. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam, London: New York. 245 pages.
Buseck, P.R. (1977) Pallasite meteorites-mineralogy, petrology, and geochemistry. Geochim Cosmochim Acta 41:711-740.
Grady, M. M. (2000) Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge, New York, Oakleigh, Madrid, Cape Town. 690 pages.
Yang, J., Goldstein, J.I. & Scott, E. R. D. (2010) Main-group pallasites: Thermal history, relationship to IIIA irons and origin. Geochimica et Cosmochimica Acta 74:4471-4492.

External Links

http://www.lpi.usra.edu/meteor/metbull.php = Meteoritical Bulletin Database


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