Chinguetti meteorite, Chinguetti, Adrar Region, Mauritaniai
Regional Level Types | |
---|---|
Chinguetti meteorite | Meteorite Fall Location |
Chinguetti | Department |
Adrar Region | Region |
Mauritania | Country |
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
20° 15' North , 12° 41' West
Latitude & Longitude (decimal):
Meteorite Class:
Meteoritical Society Class:
KΓΆppen climate type:
Nearest Settlements:
Place | Population | Distance |
---|---|---|
ChingueαΉαΉi | 4,711 (2017) | 41.0km |
Atar | 24,021 (2016) | 48.3km |
Mindat Locality ID:
264821
Long-form identifier:
mindat:1:2:264821:0
GUID (UUID V4):
fe32a58e-5e21-46b0-bc5d-3bd45ef479c6
Stony-iron, Mesosiderite
Find, 1920; 4.05 kg
Reports of an enormous mass circulated, but only a single mass was ever recovered. A few suggestive droplets of black fused silica were also reported to have been found at the base of a large sandstone hillock where the mass was found. The mass β a flat parallelepiped with a 16x9.5 cm face β consists primarily of Fe-Ni metal (~80 wt%) with a multitude of tiny stone inclusions. A few larger silicate fragments (β€4 cm) are also found. A 1982 modal analysis gave the following (volumetric) breakdown: Pyroxene (42%), Kamacite (39%), Troilite (14%), Plagioclase (3%), Merrillite (<2%) & Tridymite (~0.5%). Kamacite dominates the pervasive WidmanstΓ€tten network and envelops the silicates ['swathing' kamacite]. Interstitial troilite is concentrated along metal-silicate joins. Minor amounts of magnesian olivine (Fo75), often surrounded by Fe-enriched coronas, are also present. The silicates, both large and small, are irregularly distributed. A few minor and trace phases have been identified as well.
A cosmic ray age of 66Β±7 Ma and terrestrial exposure age of 18Β±1 ka suggest that Chinguetti (1) may have been part of a major mesosiderite collisional break-up 60-70 million years ago and (2) that the radius of the preterrestrial meteoroid was β€ 80 cm just prior to its impact.
Chinguetti has been classified as a Mesosiderites-B1 (moderate plagioclase abundance; unmetamorphosed, fine-grained matrix). Chinguetti is one of 4 Mesosiderite in the mesosiderite B1 subgroup. [Only a relatively small number (~40) of mesosiderites have been fully classified.] The main mass (3.9 kg) is with the MusΓ©um National d'Histoire Naturelle (Paris). A smaller mass (380 g) is at U.S. National Museum in Washington.
Those who can read French may be interested in the book by Monod & Zanda (1992).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
9 valid minerals.
Meteorite/Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
β Chromite Formula: Fe2+Cr3+2O4 References: |
β 'Fayalite-Forsterite Series' References: |
β Ilmenite Formula: Fe2+TiO3 |
β Iron Formula: Fe |
β Iron var. Kamacite Formula: (Fe,Ni) |
β Merrillite Formula: Ca9NaMg(PO4)7 |
β 'Meteoritic Iron' |
β 'Orthopyroxene Subgroup' Description: As yellow crystal fragments & elsewhere References: |
β 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 References: |
β 'Pyroxene Group' Formula: ADSi2O6 |
β Rutile Formula: TiO2 |
β Schreibersite Formula: (Fe,Ni)3P |
β Taenite Formula: (Fe,Ni) |
β Tridymite Formula: SiO2 |
β Troilite Formula: FeS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 1 - Elements | |||
---|---|---|---|
β | Iron | 1.AE.05 | Fe |
β | var. Kamacite | 1.AE.05 | (Fe,Ni) |
β | Taenite | 1.AE.10 | (Fe,Ni) |
β | Schreibersite | 1.BD.05 | (Fe,Ni)3P |
Group 2 - Sulphides and Sulfosalts | |||
β | Troilite | 2.CC.10 | FeS |
Group 4 - Oxides and Hydroxides | |||
β | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
β | Ilmenite | 4.CB.05 | Fe2+TiO3 |
β | Tridymite | 4.DA.10 | SiO2 |
β | Rutile | 4.DB.05 | TiO2 |
Group 8 - Phosphates, Arsenates and Vanadates | |||
β | Merrillite | 8.AC.45 | Ca9NaMg(PO4)7 |
Unclassified | |||
β | 'Fayalite-Forsterite Series' | - | |
β | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
β | 'Pyroxene Group' | - | ADSi2O6 |
β | 'Meteoritic Iron' | - | |
β | 'Orthopyroxene Subgroup' | - |
List of minerals for each chemical element
O | Oxygen | |
---|---|---|
O | β Chromite | Fe2+Cr23+O4 |
O | β Ilmenite | Fe2+TiO3 |
O | β Rutile | TiO2 |
O | β Tridymite | SiO2 |
O | β Merrillite | Ca9NaMg(PO4)7 |
O | β Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
O | β Pyroxene Group | ADSi2O6 |
Na | Sodium | |
Na | β Merrillite | Ca9NaMg(PO4)7 |
Na | β Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
Mg | Magnesium | |
Mg | β Merrillite | Ca9NaMg(PO4)7 |
Al | Aluminium | |
Al | β Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
Si | Silicon | |
Si | β Tridymite | SiO2 |
Si | β Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
Si | β Pyroxene Group | ADSi2O6 |
P | Phosphorus | |
P | β Schreibersite | (Fe,Ni)3P |
P | β Merrillite | Ca9NaMg(PO4)7 |
S | Sulfur | |
S | β Troilite | FeS |
Ca | Calcium | |
Ca | β Merrillite | Ca9NaMg(PO4)7 |
Ca | β Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
Ti | Titanium | |
Ti | β Ilmenite | Fe2+TiO3 |
Ti | β Rutile | TiO2 |
Cr | Chromium | |
Cr | β Chromite | Fe2+Cr23+O4 |
Fe | Iron | |
Fe | β Chromite | Fe2+Cr23+O4 |
Fe | β Ilmenite | Fe2+TiO3 |
Fe | β Iron | Fe |
Fe | β Iron var. Kamacite | (Fe,Ni) |
Fe | β Schreibersite | (Fe,Ni)3P |
Fe | β Taenite | (Fe,Ni) |
Fe | β Troilite | FeS |
Ni | Nickel | |
Ni | β Iron var. Kamacite | (Fe,Ni) |
Ni | β Schreibersite | (Fe,Ni)3P |
Ni | β Taenite | (Fe,Ni) |
Other Databases
Wikipedia: | https://en.wikipedia.org/wiki/Chinguetti_meteorite |
---|---|
Wikidata ID: | Q5101045 |
Other Regions, Features and Areas containing this locality
African PlateTectonic Plate
- Taoudenni basinBasin
- West African CratonCraton
North Africa
- Sahara DesertDesert
Northwest Africa MeteoritesGroup of Meteorite Fall Locations
West AfricaUN Subregion
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.
References
articles.adsabs.harvard.edu (n.d.) http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?1955Metic..1.308M&data_type=PDF_HIGH&whole_paper=YES&type=PRINTER&filetype=.pdf