A 4.65 kg. meteorite (aubrite) found in 1936.

Shallowater is the only known unbrecciated, igneous aubrite. It is a coarse-grained orthopyroxenite consisting of (in vol%) poikilitic orthoenstatite crystals (80 vol%) up to 4.5 cm in size which contain, as inclusions and in the interstices, xenoliths of an assemblage of twinned low-Ca clinoenstatite (1), forsterite (2.9 vol%), plagioclase (2.5 vol%), metallic Fe,Ni (3.3), troilite (2.9), schreibersite (0.4), weathered opaques (8 vol%), and traces of niningerite and oldhamite.

A number of mineralogical peculiarities have led Klaus Keil and others to suggest that Shallowater's parent body was different from the parent body of the other aubrite falls.

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Standard Detailed Gallery Strunz Chemical Elements

Mineral List

15 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

ⓘ Aubrite meteorite

Detailed Mineral List:

ⓘ Albite

Formula: Na(AlSi₃O₈)

References:

Meteoritics (ISSN 0026-1114), vol. 24, Dec. 1989, p. 195-208.

ⓘ Albite var. Anorthoclase

Formula: (Na,K)AlSi₃O₈

References:

www.meteoritestudies.com (n.d.) http://www.meteoritestudies.com/protected_SHALLOW.HTM

ⓘ Albite var. Oligoclase

Formula: (Na,Ca)[Al(Si,Al)Si₂O₈]

References:

Meteoritics (ISSN 0026-1114), vol. 24, Dec. 1989, p. 195-208.

ⓘ Chromite

Formula: Fe²⁺Cr³⁺₂O₄

References:

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

ⓘ Clinoenstatite

Formula: MgSiO₃

References:

Meteoritics (ISSN 0026-1114), vol. 24, Dec. 1989, p. 195-208.

ⓘ Daubréelite

Formula: Fe²⁺Cr³⁺₂S₄

References:

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

ⓘ Enstatite

Formula: Mg₂Si₂O₆

References:

Meteoritics (ISSN 0026-1114), vol. 24, Dec. 1989, p. 195-208.

Watters, T. R. & Prinz, M (1979) Aubrites - Their origin and relationship to enstatite chondrites. In: Lunar and Planetary Science Conference, 10th, Houston, Tex., March 19-23, 1979, Proceedings. Volume 1. (A80-23557 08-91) New York, Pergamon Press, Inc., 1979, p. 1073-1093.

ⓘ Forsterite

Formula: Mg₂SiO₄

References:

Meteoritics (ISSN 0026-1114), vol. 24, Dec. 1989, p. 195-208.

ⓘ Graphite

Formula: C

References:

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

ⓘ Ilmenite

Formula: Fe²⁺TiO₃

References:

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

ⓘ Native Iron

Formula: Fe

References:

Meteoritics (ISSN 0026-1114), vol. 24, Dec. 1989, p. 195-208.

ⓘ Native Iron var. Kamacite

Formula: (Fe,Ni)

References:

Meteoritics (ISSN 0026-1114), vol. 24, Dec. 1989, p. 195-208.

ⓘ Niningerite

Formula: MgS

References:

Geochimica et Cosmochimica Acta (1989), 53(12), 3291-307

ⓘ Oldhamite

Formula: CaS

References:

Meteoritics (ISSN 0026-1114), vol. 24, Dec. 1989, p. 195-208.

Geochimica et Cosmochimica Acta (1989), 53(12), 3291-307

ⓘ 'Orthopyroxene Subgroup'

Description: Shallowater is ~80 vol% Orthopyroxene [Other aubrites are predominantly clinoenstatite]

References:

Mittlefehldt, D. W., McCoy, T. J., Goodrich, C. A. & Kracher, A. (1998) Non-chondritic meteorites from Asteroidal bodies. In: Planetary Materials (Papike, J. J., Editor): Chapter 4, 195 pages. Mineralogical Society of America: Washington, DC, USA.

ⓘ 'Plessite'

References:

London: New York.

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

ⓘ Schreibersite

Formula: (Fe,Ni)₃P

References:

Meteoritics (ISSN 0026-1114), vol. 24, Dec. 1989, p. 195-208.

ⓘ Taenite

Formula: (Fe,Ni)

References:

Meteoritics (ISSN 0026-1114), vol. 24, Dec. 1989, p. 195-208.

ⓘ Troilite

Formula: FeS

References:

Meteoritics (ISSN 0026-1114), vol. 24, Dec. 1989, p. 195-208.

ⓘ Vivianite

Formula: Fe²⁺Fe²⁺₂(PO₄)₂ · 8H₂O

Description: Product of terrestrial weathering.

References:

a new aubrite. American Mineralogist 25:279-286

Foshag, W. F. (1940). The Shallowater meteorite

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Native Iron	1.AE.05	Fe
ⓘ	var. Kamacite	1.AE.05	(Fe,Ni)
ⓘ	Taenite	1.AE.10	(Fe,Ni)
ⓘ	Schreibersite	1.BD.05	(Fe,Ni)₃P
ⓘ	Graphite	1.CB.05a	C
Group 2 - Sulphides and Sulfosalts
ⓘ	Troilite	2.CC.10	FeS
ⓘ	Niningerite	2.CD.10	MgS
ⓘ	Oldhamite	2.CD.10	CaS
ⓘ	Daubréelite	2.DA.05	Fe²⁺Cr³⁺₂S₄
Group 4 - Oxides and Hydroxides
ⓘ	Chromite	4.BB.05	Fe²⁺Cr³⁺₂O₄
ⓘ	Ilmenite	4.CB.05	Fe²⁺TiO₃
Group 8 - Phosphates, Arsenates and Vanadates
ⓘ	Vivianite	8.CE.40	Fe²⁺Fe²⁺₂(PO₄)₂ · 8H₂O
Group 9 - Silicates
ⓘ	Forsterite	9.AC.05	Mg₂SiO₄
ⓘ	Enstatite	9.DA.05	Mg₂Si₂O₆
ⓘ	Clinoenstatite	9.DA.10	MgSiO₃
ⓘ	Albite	9.FA.35	Na(AlSi₃O₈)
ⓘ	var. Anorthoclase	9.FA.35	(Na,K)AlSi₃O₈
ⓘ	var. Oligoclase	9.FA.35	(Na,Ca)[Al(Si,Al)Si₂O₈]
Unclassified
ⓘ	'Plessite'	-
ⓘ	'Orthopyroxene Subgroup'	-

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Vivianite	Fe²⁺Fe₂²⁺(PO₄)₂ · 8H₂O
C	Carbon
C	ⓘ Graphite	C
O	Oxygen
O	ⓘ Albite	Na(AlSi₃O₈)
O	ⓘ Albite var. Anorthoclase	(Na,K)AlSi₃O₈
O	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
O	ⓘ Clinoenstatite	MgSiO₃
O	ⓘ Enstatite	Mg₂Si₂O₆
O	ⓘ Forsterite	Mg₂SiO₄
O	ⓘ Ilmenite	Fe²⁺TiO₃
O	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
O	ⓘ Vivianite	Fe²⁺Fe₂²⁺(PO₄)₂ · 8H₂O
Na	Sodium
Na	ⓘ Albite	Na(AlSi₃O₈)
Na	ⓘ Albite var. Anorthoclase	(Na,K)AlSi₃O₈
Na	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
Mg	Magnesium
Mg	ⓘ Clinoenstatite	MgSiO₃
Mg	ⓘ Enstatite	Mg₂Si₂O₆
Mg	ⓘ Forsterite	Mg₂SiO₄
Mg	ⓘ Niningerite	MgS
Al	Aluminium
Al	ⓘ Albite	Na(AlSi₃O₈)
Al	ⓘ Albite var. Anorthoclase	(Na,K)AlSi₃O₈
Al	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
Si	Silicon
Si	ⓘ Albite	Na(AlSi₃O₈)
Si	ⓘ Albite var. Anorthoclase	(Na,K)AlSi₃O₈
Si	ⓘ Clinoenstatite	MgSiO₃
Si	ⓘ Enstatite	Mg₂Si₂O₆
Si	ⓘ Forsterite	Mg₂SiO₄
Si	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
P	Phosphorus
P	ⓘ Schreibersite	(Fe,Ni)₃P
P	ⓘ Vivianite	Fe²⁺Fe₂²⁺(PO₄)₂ · 8H₂O
S	Sulfur
S	ⓘ Daubréelite	Fe²⁺Cr₂³⁺S₄
S	ⓘ Niningerite	MgS
S	ⓘ Oldhamite	CaS
S	ⓘ Troilite	FeS
K	Potassium
K	ⓘ Albite var. Anorthoclase	(Na,K)AlSi₃O₈
Ca	Calcium
Ca	ⓘ Oldhamite	CaS
Ca	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
Ti	Titanium
Ti	ⓘ Ilmenite	Fe²⁺TiO₃
Cr	Chromium
Cr	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
Cr	ⓘ Daubréelite	Fe²⁺Cr₂³⁺S₄
Fe	Iron
Fe	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
Fe	ⓘ Daubréelite	Fe²⁺Cr₂³⁺S₄
Fe	ⓘ Ilmenite	Fe²⁺TiO₃
Fe	ⓘ Native Iron	Fe
Fe	ⓘ Native Iron var. Kamacite	(Fe,Ni)
Fe	ⓘ Schreibersite	(Fe,Ni)₃P
Fe	ⓘ Taenite	(Fe,Ni)
Fe	ⓘ Troilite	FeS
Fe	ⓘ Vivianite	Fe²⁺Fe₂²⁺(PO₄)₂ · 8H₂O
Ni	Nickel
Ni	ⓘ Native Iron var. Kamacite	(Fe,Ni)
Ni	ⓘ Schreibersite	(Fe,Ni)₃P
Ni	ⓘ Taenite	(Fe,Ni)

Other Regions, Features and Areas containing this locality

North AmericaContinent

North America PlateTectonic Plate

Mazatzal TerraneVolcanic Arc
Permian BasinBasin
Shawnee DomainDomain

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References

Foshag, William F. (1940). The Shallowater Meteorite, A New Aubrite. American Mineralogist: 25: 779-786.

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

Keil, Klaus, Th. Ntaflos, G. J. Taylor, A. J. Brearley, H. E. Newsom, A. D. Romig Jr. (1989). The Shallowater aubrite: Evidence for origin by planetesimal impacts. Geochimica et Cosmochimica Acta: 53(12): 3291–3307. (December 1989).

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

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Shallowater meteorite, Lubbock County, Texas, USAiRegional Level TypesShallowater meteoriteMeteorite Fall Location Lubbock CountyCounty TexasState 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

Shallowater meteorite, Lubbock County, Texas, USA i
Regional Level Types
Shallowater meteorite Meteorite Fall Location
Lubbock County County
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