SUPPORT US. If mindat.org is important to you, click here to donate to our Fall 2019 fundraiser!
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsBooks & Magazines
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryMineral Photography

Casas Grandes meteorite, Casas Grandes, Chihuahua, Mexico

This page is currently not sponsored. Click here to sponsor this page.
Key
Lock Map
Latitude & Longitude (WGS84): 30° 23' 59'' North , 107° 48' 0'' West
Latitude & Longitude (decimal): 30.40000,-107.80000
GeoHash:G#: 9t7kfynkv
Locality type:Meteorite Fall Location
Meteorite Class:IIIAB iron meteorite
Meteoritical Society Class:Iron, IIIAB
Metbull:View entry in Meteoritical Bulletin Database
Köppen climate type:BSk : Cold semi-arid (steppe) climate


Iron meteorite, Octahedrite (IIIAB, Om)
Find, 1867; 1.545 tons


A large lenticular mass of meteoritic iron was found wrapped and entombed in the Casas Grandes ruins on the Rio de las Casas Grandes. While the exterior is corroded, etched Widmanstätten patterns exhibit distinct long lamellae accompanied by profuse, often deformed Neumann bands. Taenite and plessite occupy ~40 vol% with some martensite and poorly resolvable "black taenite" also present. Accessory schreibersite is common as blebs in the comb plessite and as boundary precipitates. Troilite with very minor daubréelite and carlsbergite are also present. Graphite was reported by Tassin (1902), but was not observed by Buchwald (1975).

Casas Grandes is the 7th most massive of the 11 IIIAB irons with a mass of over one ton. The 299 recovered IIIAB irons represent the most numerous iron group recovered by the end of 2014 (27% of recovered irons). The IAB irons (n= 274) are nearly as numerous. The main mass has been held at the Smithsonian National Museum (Washington).

'Casas Grandes' is the name listed at the Meteoritical Bulletin Database and in the Catalogue of Meteorites (2000). 'Chihauhau' is also a recognized synonym used in the past.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


6 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:

Carlsbergite
Formula: CrN
Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages.
Daubréelite
Formula: Fe2+Cr3+2S4
Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages.
'IIIAB iron meteorite'
Reference: Meteoritical Society Database
Iron
Formula: Fe
Reference: Tassin, W. (1902) The Casa Grandes Meteorite: Proceedings U. S. National Museum 25: 69-74.; Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages.
Iron var: Kamacite
Formula: (Fe,Ni)
Reference: Tassin, W. (1902) The Casa Grandes Meteorite: Proceedings U. S. National Museum 25: 69-74.; Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages.
Iron var: Martensite
Formula: Fe
Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages.
'Plessite'
Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages.
Schreibersite
Formula: (Fe,Ni)3P
Reference: Tassin, W. (1902) The Casa Grandes Meteorite: Proceedings U. S. National Museum 25: 69-74.; Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages.
Taenite
Formula: (Fe,Ni)
Reference: Tassin, W. (1902) The Casa Grandes Meteorite: Proceedings U. S. National Museum 25: 69-74.; Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages.
Troilite
Formula: FeS
Description: Common as scattered nodules and as elongated bodies within a rim of swathing kamacite.
Reference: Tassin, W. (1902) The Casa Grandes Meteorite: Proceedings U. S. National Museum 25: 69-74.; Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Carlsbergite'1.BC.15CrN
'Iron'1.AE.05Fe
var: Kamacite1.AE.05(Fe,Ni)
var: Martensite1.AE.05Fe
Schreibersite1.BD.05(Fe,Ni)3P
Taenite1.AE.10(Fe,Ni)
Group 2 - Sulphides and Sulfosalts
'Daubréelite'2.DA.05Fe2+Cr3+2S4
Troilite2.CC.10FeS
Unclassified Minerals, Rocks, etc.
'IIIAB iron meteorite'-
Plessite-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Carlsbergite1.1.20.1CrN
Iron
var: Kamacite
1.1.11.1(Fe,Ni)
Schreibersite1.1.21.2(Fe,Ni)3P
Taenite1.1.11.2(Fe,Ni)
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Troilite2.8.9.1FeS
AmBnXp, with (m+n):p = 3:4
Daubréelite2.10.1.11Fe2+Cr3+2S4
Unclassified Minerals, Rocks, etc.
'IIIAB iron meteorite'-
Iron-Fe
var: Martensite-Fe
'Plessite'-

List of minerals for each chemical element

NNitrogen
N CarlsbergiteCrN
PPhosphorus
P Schreibersite(Fe,Ni)3P
SSulfur
S DaubréeliteFe2+Cr23+S4
S TroiliteFeS
CrChromium
Cr CarlsbergiteCrN
Cr DaubréeliteFe2+Cr23+S4
FeIron
Fe DaubréeliteFe2+Cr23+S4
Fe IronFe
Fe Iron (var: Kamacite)(Fe,Ni)
Fe Iron (var: Martensite)Fe
Fe Schreibersite(Fe,Ni)3P
Fe Taenite(Fe,Ni)
Fe TroiliteFeS
NiNickel
Ni Iron (var: Kamacite)(Fe,Ni)
Ni Schreibersite(Fe,Ni)3P
Ni Taenite(Fe,Ni)

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 - Miocene
0 - 23.03 Ma



ID: 3185380
Cenozoic sedimentary rocks

Age: Cenozoic (0 - 23.03 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]

Neogene
2.588 - 23.03 Ma



ID: 2430274

Age: Neogene (2.588 - 23.03 Ma)

Lithology: Acidic igneous extrusive

Reference: Instituto Nacional de Estadística, Geografía e Informática. Conjunto de Datos Vectoriales Geológicos. Continuo Nacional. Escala 1:1’000,000. [63]

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)
Fletcher, L. (1890) On the Mexican Meteorites, with especial regard to the occurrence of wide-spread meteoritic showers. Mineralogical Magazine 9 (42):91-180. (Aug 1890)
Tassin, W. (1902) The Casa Grandes Meteorite: Proceedings U. S. National Museum 25: 69-74.
Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages.
Grady, M. M. (2000). Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge; New York; Oakleigh; Madrid; Cape Town. 689 pages.

External Links



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.
 
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2019, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: September 19, 2019 15:50:47 Page generated: September 10, 2018 09:20:44
Go to top of page