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Broken Bow meteorite, Custer County, Nebraska, USAi
Regional Level Types
Broken Bow meteoriteMeteorite Fall Location
Custer CountyCounty
NebraskaState
USACountry

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Latitude & Longitude (WGS84):
41° 25' 59'' North , 99° 42' 0'' West
Latitude & Longitude (decimal):
41.43333,-99.70000
GRN:
N28W54
Type:
Meteorite Fall Location
Meteorite Class:
H4 chondrite meteorite
Meteoritical Society Class:
H4
Metbull:
View entry in Meteoritical Bulletin Database
Köppen climate type:
Dfa : Hot-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Broken Bow3,551 (2017)6.1km
Merna362 (2017)7.5km
Callaway522 (2017)24.3km
Anselmo143 (2017)24.8km
Ansley426 (2017)31.1km
Mindat Locality ID:
296698
Long-form identifier:
mindat:1:2:296698:7
GUID (UUID V4):
0


Ordinary chondrite (H4)
Find, 1937; 6.8 kg

A single stone was found. Inspections reveal distinct chondrules, chondrule fragments, and Fe-Ni metal within a moderately equilibrated and sometimes weathered matrix. Compositionally, mostly equilibrated olivine (Fa20) and roughly equilibrated low Ca-pyroxene are characteristic of H4-chondrites. Mineralogically, the meteorite consists primarily of dominant olivine and pyroxene along with minor plagioclase, troilite, and Fe-Ni metal. Accessory chromite and very minor copper, ilmenite, isocubanite, and mackinawite are also reported.

As with many meteorites collected by Harvey Nininger, a moderately large mass is held at the Center for Meteorite Studies [1.5938 kg in 2017].

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


8 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 Diagram

Detailed Mineral List:

ⓘ Chromite
Formula: Fe2+Cr3+2O4
ⓘ 'Fayalite-Forsterite Series'
ⓘ Ilmenite
Formula: Fe2+TiO3
ⓘ Isocubanite
Formula: CuFe2S3
ⓘ Mackinawite
Formula: FeS
ⓘ Native Copper
Formula: Cu
ⓘ Native Iron
Formula: Fe
ⓘ Native Iron var. Kamacite
Formula: (Fe,Ni)
ⓘ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
ⓘ 'Pyroxene Group'
Formula: ADSi2O6
ⓘ Taenite
Formula: (Ni,Fe)
ⓘ Troilite
Formula: FeS

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Copper1.AA.05Cu
ⓘNative Iron1.AE.05Fe
ⓘvar. Kamacite1.AE.05(Fe,Ni)
ⓘTaenite1.AE.10(Ni,Fe)
Group 2 - Sulphides and Sulfosalts
ⓘIsocubanite2.CB.55bCuFe2S3
ⓘTroilite2.CC.10FeS
ⓘMackinawite2.CC.25FeS
Group 4 - Oxides and Hydroxides
ⓘChromite4.BB.05Fe2+Cr3+2O4
ⓘIlmenite4.CB.05Fe2+TiO3
Unclassified
ⓘ'Fayalite-Forsterite Series'-
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
ⓘ'Pyroxene Group'-ADSi2O6

List of minerals for each chemical element

OOxygen
Oⓘ ChromiteFe2+Cr23+O4
Oⓘ IlmeniteFe2+TiO3
Oⓘ Fayalite-Forsterite Series
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Oⓘ Pyroxene GroupADSi2O6
NaSodium
Naⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
Mgⓘ Fayalite-Forsterite Series
AlAluminium
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Siⓘ Fayalite-Forsterite Series
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Siⓘ Pyroxene GroupADSi2O6
SSulfur
Sⓘ IsocubaniteCuFe2S3
Sⓘ MackinawiteFeS
Sⓘ TroiliteFeS
CaCalcium
Caⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
TiTitanium
Tiⓘ IlmeniteFe2+TiO3
CrChromium
Crⓘ ChromiteFe2+Cr23+O4
FeIron
Feⓘ ChromiteFe2+Cr23+O4
Feⓘ IlmeniteFe2+TiO3
Feⓘ Native IronFe
Feⓘ IsocubaniteCuFe2S3
Feⓘ Native Iron var. Kamacite(Fe,Ni)
Feⓘ MackinawiteFeS
Feⓘ Taenite(Ni,Fe)
Feⓘ TroiliteFeS
Feⓘ Fayalite-Forsterite Series
NiNickel
Niⓘ Native Iron var. Kamacite(Fe,Ni)
Niⓘ Taenite(Ni,Fe)
CuCopper
Cuⓘ Native CopperCu
Cuⓘ IsocubaniteCuFe2S3

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

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

www.lpi.usra.edu (n.d.) https://www.lpi.usra.edu/meteor/get_original_photo.php?recno=5628308
Nininger, H.H. (1950) The Nininger Collection of Meteorites. A Catalogue and a History. Winslow, Arizona. 144 pages.
Mason, Brian (1963) Olivine composition in chondrites. Geochimica et Cosmochimica Acta, 27 (10) 1011-1023 doi:10.1016/0016-7037(63)90062-0
Ramdohr, Paul (1972) The Opaque Minerals in Stony Meteorites. De Gruyter. doi:10.1515/9783112651025
Graham, A. L., Bevan, A. W. R., Hutchison, R. (1985) Catalogue of Meteorites - With Special Reference to those Represented in the Collection of the British Museum (Natural History) (4th ed.) British Museum (Natural History), London.
Grady, Monica (2000) Catalogue of Meteorites (5th ed.). Cambridge University Press.
Rubin, Alan E (2003) Chromite-plagioclase assemblages as a new shock indicator; implications for the shock and thermal histories of ordinary chondrites. Geochimica et Cosmochimica Acta, 67 (14) 2695-2709 doi:10.1016/s0016-7037(03)00107-8
www.lpi.usra.edu (n.d.) http://www.lpi.usra.edu/meteor/metbull.php
www.lpi.usra.edu (n.d.) http://www.lpi.usra.edu/meteor/metbull.php?code=5145
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