Enstatite Chondrite, low-iron [EL6; S2]
Fall, October 1946; 9.46 kg, weathered

A few months after a bright fireball appeared a single mass was recovered from a ploughed field SW of Eagle. However, the stone was not analyzed for nearly four decades. Chemically and mineralogically, Eagle appears to be a EL6 Enstatite chondrite — Enstatite is dominant and is accompanied by the expected Fe-Ni metal, Troilite, and other minor phases such as Alabandite and Schreibersite. Any Oldhamite, however, has apparently been weathered way. The absence of chondrules indicates extensive metamorphism even for an EL6 chondrites. A number of small clasts are apparently due to post-metamorphic brecciation.

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Standard Detailed Gallery Strunz Chemical Elements

Mineral List

11 valid minerals.

Meteorite/Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

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Alphabetical List Tree Diagram

ⓘ EL6 chondrite meteorite

Detailed Mineral List:

ⓘ Alabandite

Formula: MnS

Reference: Olsen, E. J., Huss, G. I. & Jarosewich, E. . (1988) The Eagle, Nebraska enstatite chondrite (EL6). Meteoritics 23(4): 379-380. (Dec 1988); Mészárosová, N. (2018). Occurrence of graphite and sinoite in EL6 chondrites Eagle and Pillistfer. Meteoritics and Planetary Science, 52(5), 781-806.

ⓘ Albite

Formula: Na(AlSi₃O₈)

Reference: Mészárosová, N. (2018). Occurrence of graphite and sinoite in EL6 chondrites Eagle and Pillistfer. Meteoritics and Planetary Science, 52(5), 781-806.

ⓘ Cristobalite

Formula: SiO₂

Reference: Mészárosová, N. (2018). Occurrence of graphite and sinoite in EL6 chondrites Eagle and Pillistfer. Meteoritics and Planetary Science, 52(5), 781-806.

ⓘ Daubréelite

Formula: Fe²⁺Cr³⁺₂S₄

ⓘ Enstatite

Formula: Mg₂Si₂O₆

ⓘ Graphite

Formula: C

Reference: Mészárosová, N. (2018). Occurrence of graphite and sinoite in EL6 chondrites Eagle and Pillistfer. Meteoritics and Planetary Science, 52(5), 781-806.

ⓘ Iron

Formula: Fe

Reference: Mészárosová, N. (2018). Occurrence of graphite and sinoite in EL6 chondrites Eagle and Pillistfer. Meteoritics and Planetary Science, 52(5), 781-806.

ⓘ Iron var. Kamacite

Formula: (Fe,Ni)

Reference: Mészárosová, N. (2018). Occurrence of graphite and sinoite in EL6 chondrites Eagle and Pillistfer. Meteoritics and Planetary Science, 52(5), 781-806.

ⓘ 'Nickel-iron'

Description: Variable Nickel (6-11 wt. %); Silicon ~ 1 wt.%

Reference: Olsen, E. J., Huss, G. I. & Jarosewich, E. . (1988) The Eagle, Nebraska enstatite chondrite (EL6). Meteoritics 23(4): 379-380. (Dec 1988)

ⓘ 'Plagioclase'

Formula: (Na,Ca)[(Si,Al)AlSi₂]O₈

Description: Albitic with An 15-17 and Or 5-7

ⓘ Schreibersite

Formula: (Fe,Ni)₃P

ⓘ 'Silica'

Description: The presence of 2 wt.% Al-oxide would be most readily accommodated into the mineral structure of the Tridymite polymorph

Reference: Olsen, E. J., Huss, G. I. & Jarosewich, E. . (1988) The Eagle, Nebraska enstatite chondrite (EL6). Meteoritics 23(4): 379-380. (Dec 1988)

ⓘ Sinoite

Formula: Si₂N₂O

Reference: Mészárosová, N. (2018). Occurrence of graphite and sinoite in EL6 chondrites Eagle and Pillistfer. Meteoritics and Planetary Science, 52(5), 781-806.

ⓘ Tridymite

Formula: SiO₂

Reference: Mészárosová, N. (2018). Occurrence of graphite and sinoite in EL6 chondrites Eagle and Pillistfer. Meteoritics and Planetary Science, 52(5), 781-806.

ⓘ Troilite

Formula: FeS

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Graphite	1.CB.05a	C
ⓘ	Iron	1.AE.05	Fe
ⓘ	var. Kamacite	1.AE.05	(Fe,Ni)
ⓘ	Schreibersite	1.BD.05	(Fe,Ni)₃P
ⓘ	Sinoite	1.DB.10	Si₂N₂O
Group 2 - Sulphides and Sulfosalts
ⓘ	Alabandite	2.CD.10	MnS
ⓘ	Daubréelite	2.DA.05	Fe²⁺Cr³⁺₂S₄
ⓘ	Troilite	2.CC.10	FeS
Group 4 - Oxides and Hydroxides
ⓘ	Cristobalite	4.DA.15	SiO₂
ⓘ	Tridymite	4.DA.10	SiO₂
Group 9 - Silicates
ⓘ	Albite	9.FA.35	Na(AlSi₃O₈)
ⓘ	Enstatite	9.DA.05	Mg₂Si₂O₆
Unclassified Minerals, Rocks, etc.
ⓘ	'Nickel-iron'	-
ⓘ	'Plagioclase'	-	(Na,Ca)[(Si,Al)AlSi₂]O₈
ⓘ	'Silica'	-

List of minerals for each chemical element

C	Carbon
C	ⓘ Graphite	C
N	Nitrogen
N	ⓘ Sinoite	Si₂N₂O
O	Oxygen
O	ⓘ Enstatite	Mg₂Si₂O₆
O	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
O	ⓘ Albite	Na(AlSi₃O₈)
O	ⓘ Cristobalite	SiO₂
O	ⓘ Sinoite	Si₂N₂O
O	ⓘ Tridymite	SiO₂
Na	Sodium
Na	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Na	ⓘ Albite	Na(AlSi₃O₈)
Mg	Magnesium
Mg	ⓘ Enstatite	Mg₂Si₂O₆
Al	Aluminium
Al	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Al	ⓘ Albite	Na(AlSi₃O₈)
Si	Silicon
Si	ⓘ Enstatite	Mg₂Si₂O₆
Si	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	ⓘ Albite	Na(AlSi₃O₈)
Si	ⓘ Cristobalite	SiO₂
Si	ⓘ Sinoite	Si₂N₂O
Si	ⓘ Tridymite	SiO₂
P	Phosphorus
P	ⓘ Schreibersite	(Fe,Ni)₃P
S	Sulfur
S	ⓘ Alabandite	MnS
S	ⓘ Daubréelite	Fe²⁺Cr₂³⁺S₄
S	ⓘ Troilite	FeS
Ca	Calcium
Ca	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Cr	Chromium
Cr	ⓘ Daubréelite	Fe²⁺Cr₂³⁺S₄
Mn	Manganese
Mn	ⓘ Alabandite	MnS
Fe	Iron
Fe	ⓘ Daubréelite	Fe²⁺Cr₂³⁺S₄
Fe	ⓘ Schreibersite	(Fe,Ni)₃P
Fe	ⓘ Troilite	FeS
Fe	ⓘ Iron var. Kamacite	(Fe,Ni)
Fe	ⓘ Iron	Fe
Ni	Nickel
Ni	ⓘ Schreibersite	(Fe,Ni)₃P
Ni	ⓘ Iron var. Kamacite	(Fe,Ni)

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)

Olsen, E. J., Huss, G. I. & Jarosewich, E. . (1988) The Eagle, Nebraska enstatite chondrite (EL6). Meteoritics 23(4): 379-380. (Dec 1988)

Grady, M. M. (2000). Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge, New York, Oakleigh, Madrid, Cape Town. 690 pages.

External Links

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Eagle meteorite, Eagle, Cass Co., Nebraska, USAiRegional Level TypesEagle meteoriteMeteorite Fall Location Eagle- not defined - Cass Co.County NebraskaState 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

References

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Other Regions, Features and Areas containing this locality

Eagle meteorite, Eagle, Cass Co., Nebraska, USA i
Regional Level Types
Eagle meteorite Meteorite Fall Location
Eagle - not defined -
Cass Co. County
Nebraska State
USA Country