Iron, hexahedrite (IIAB)
Find 1953, 7 kg.

A weathered metallic mass (5.65% Ni) was recovered and later identified, acquired, and distributed by Harvey Nininger. Before sectioning, the entire mass was a single kamacite crystal profusely decorated by rhabdite prisms and lamellae. Small troilite-daubréelite inclusions are present in some sections. Tiny Carlsbergite plates are also found within the kamacite. Numerous Neumann bands are present and some cold annealing may have transpired before the meteoroid encountered the earth.

Much of the mass was distributed in 5 mm thick slices so that today no one museum appears to hold as much as 10% of the original mass.

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Standard Detailed Gallery Strunz Chemical Elements

Mineral List

ⓘ Carlsbergite

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

ⓘ IIAB iron meteorite

Detailed Mineral List:

ⓘ Carlsbergite

Formula: CrN

References:

H. J. Axon, J. Kinder, C. W. Haworth and J. W. Horsfield (1981) Carlsbergite, CrN, in Troilite, FeS, of the Sikhote Alin Meteoritic Iron. Mineralogical Magazine 44:107-109.

ⓘ Cohenite

Formula: Fe₃C

References:

Axon, H. J. & Waine, C. V. (1972) A Metallographic Study of Some Hexahedrites: Mineralogical Magazine 38 (298): 725-735. (June 1972).

ⓘ Daubréelite

Formula: Fe²⁺Cr³⁺₂S₄

References:

Axon, H. J. & Waine, C. V. (1972) A Metallographic Study of Some Hexahedrites: Mineralogical Magazine 38 (298): 725-735. (June 1972).

ⓘ Iron

Formula: Fe

References:

Ramdohr, Paul (1972) The Opaque Minerals in Stony Meteorites. De Gruyter. doi:10.1515/9783112651025

H. J. Axon, J. Kinder, C. W. Haworth and J. W. Horsfield (1981) Carlsbergite, CrN, in Troilite, FeS, of the Sikhote Alin Meteoritic Iron. Mineralogical Magazine 44:107-109.

ⓘ Iron var. Kamacite

Formula: (Fe,Ni)

References:

Ramdohr, Paul (1972) The Opaque Minerals in Stony Meteorites. De Gruyter. doi:10.1515/9783112651025

H. J. Axon, J. Kinder, C. W. Haworth and J. W. Horsfield (1981) Carlsbergite, CrN, in Troilite, FeS, of the Sikhote Alin Meteoritic Iron. Mineralogical Magazine 44:107-109.

ⓘ Niningerite

Formula: MgS

References:

Ramdohr, Paul (1972) The Opaque Minerals in Stony Meteorites. De Gruyter. doi:10.1515/9783112651025

ⓘ Schreibersite

Formula: (Fe,Ni)₃P

References:

Ramdohr, Paul (1972) The Opaque Minerals in Stony Meteorites. De Gruyter. doi:10.1515/9783112651025

Axon, H. J. & Waine, C. V. (1972) A Metallographic Study of Some Hexahedrites: Mineralogical Magazine 38 (298): 725-735. (June 1972).

ⓘ Taenite

Formula: (Fe,Ni)

References:

Ramdohr, Paul (1972) The Opaque Minerals in Stony Meteorites. De Gruyter. doi:10.1515/9783112651025

Axon, H. J. & Waine, C. V. (1972) A Metallographic Study of Some Hexahedrites: Mineralogical Magazine 38 (298): 725-735. (June 1972).

ⓘ Troilite

Formula: FeS

References:

Axon, H. J. & Waine, C. V. (1972) A Metallographic Study of Some Hexahedrites: Mineralogical Magazine 38 (298): 725-735. (June 1972).

H. J. Axon, J. Kinder, C. W. Haworth and J. W. Horsfield (1981) Carlsbergite, CrN, in Troilite, FeS, of the Sikhote Alin Meteoritic Iron. Mineralogical Magazine 44:107-109.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Iron	1.AE.05	Fe
ⓘ	var. Kamacite	1.AE.05	(Fe,Ni)
ⓘ	Taenite	1.AE.10	(Fe,Ni)
ⓘ	Cohenite	1.BA.05	Fe₃C
ⓘ	Carlsbergite	1.BC.15	CrN
ⓘ	Schreibersite	1.BD.05	(Fe,Ni)₃P
Group 2 - Sulphides and Sulfosalts
ⓘ	Troilite	2.CC.10	FeS
ⓘ	Niningerite	2.CD.10	MgS
ⓘ	Daubréelite	2.DA.05	Fe²⁺Cr³⁺₂S₄

List of minerals for each chemical element

C	Carbon
C	ⓘ Cohenite	Fe₃C
N	Nitrogen
N	ⓘ Carlsbergite	CrN
Mg	Magnesium
Mg	ⓘ Niningerite	MgS
P	Phosphorus
P	ⓘ Schreibersite	(Fe,Ni)₃P
S	Sulfur
S	ⓘ Daubréelite	Fe²⁺Cr₂³⁺S₄
S	ⓘ Niningerite	MgS
S	ⓘ Troilite	FeS
Cr	Chromium
Cr	ⓘ Carlsbergite	CrN
Cr	ⓘ Daubréelite	Fe²⁺Cr₂³⁺S₄
Fe	Iron
Fe	ⓘ Cohenite	Fe₃C
Fe	ⓘ Daubréelite	Fe²⁺Cr₂³⁺S₄
Fe	ⓘ Iron	Fe
Fe	ⓘ Iron var. Kamacite	(Fe,Ni)
Fe	ⓘ Schreibersite	(Fe,Ni)₃P
Fe	ⓘ Taenite	(Fe,Ni)
Fe	ⓘ Troilite	FeS
Ni	Nickel
Ni	ⓘ Iron var. Kamacite	(Fe,Ni)
Ni	ⓘ Schreibersite	(Fe,Ni)₃P
Ni	ⓘ Taenite	(Fe,Ni)

Other Regions, Features and Areas containing this locality

North AmericaContinent

Rocky MountainsMountain Range

North America PlateTectonic Plate

USA

Montana
- North Montana Thrust BeltBasin

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References

evols.library.manoa.hawaii.edu (n.d.) http://evols.library.manoa.hawaii.edu/bitstream/handle/10524/35691/vol2-Loc-Mag(LO)pdf#page=3

Axon, H. J. & Waine, C. V. (1972) A Metallographic Study of Some Hexahedrites: Mineralogical Magazine 38 (298): 725-735. (June 1972).

Ramdohr, Paul (1972) The Opaque Minerals in Stony Meteorites. De Gruyter. doi:10.1515/9783112651025

Buchwald, Vagn F. (1975) Handbook of Iron Meteorites - Their History, Distribution, Composition and Structure. University of California Press.

Grady, Monica (2000) Catalogue of Meteorites (5th ed.). Cambridge University Press.

Wasson, J.T., Huber, H., Malvin, D.J., (2007). Formation of IIAB iron meteorites. Geochim. Cosmochim. Acta: 71: 760–781.

www.lpi.usra.edu (n.d.) http://www.lpi.usra.edu/meteor/metbull.php

www.minersoc.org (n.d.) http://www.minersoc.org/pages/Archive-MM/Volume_38/38-298-725.pdf

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Lombard meteorite, Broadwater County, Montana, USAiRegional Level TypesLombard meteoriteMeteorite Fall Location Broadwater CountyCounty MontanaState USACountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

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Mineral List

Meteorite/Rock Types Recorded

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Detailed Mineral List:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

List of minerals for each chemical element

Other Regions, Features and Areas containing this locality

References

Lombard meteorite, Broadwater County, Montana, USA i
Regional Level Types
Lombard meteorite Meteorite Fall Location
Broadwater County County
Montana State
USA Country