Ordinary Chondrite, veined (H4; S3)
Find,1900; 14 kg

Three meteoritic stones were found [#1-7.5 kg, #2 - 1.1 kg, #3 -5.7 kg]. A fourth stone (11.6 kg) was found circa 1906. The four stones lie along a straight line nearly 4 km long and represent a strewnfield. Aerodynamic markings indicate that the stones were broken apart during flight. Olivine and pyroxene composition [Fa18.6-18.8; Fs16.3-Fs16.7] and textures are virtually identical for all four stones and are characteristic of the H chondrite geochemical group. Troilite is more abundant than Fe-Ni metal. Distinct chondrules and striated pyroxenes indicate an H4 petrologic type. A few accessory phases (chromite, copper, sulfides) are also present. Undulatory extinction and planar fractures of the olivine are characteristic of the S3 shock stage. Shock-melted veins and melt pockets rich in metal and sulfide provide evidence of thermal effects associated with the shock events. These veins, in turn, are often filled with hydrated iron oxides produced by terrestrial weathering. Likewise, terrestrial weathering has also converted some troilite into pentlandite. A cosmic ray exposure age of 17.7 Ma has been reported.

Stone#1 was obtained by the Field Museum of Natural History (Chicago). Stone#2 has been lost. Stone#3 was distributed to several institutions — the largest, 2.4 kg, to the United States National Museum (Washington); Stone#4 has been at the Texas Memorial Museum.

What's in a name?? The proper name for the meteorite is 'Cedar (Texas)'. It is not to be confused with the 'Cedar (Kansas)' meteorite — an H6 chondrite found in 1938 in Smith County, Kansas.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

ⓘ Chromite

ⓘ 'Fayalite-Forsterite Series'

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

ⓘ H4 chondrite meteorite

Detailed Mineral List:

ⓘ Chromite

Formula: Fe²⁺Cr³⁺₂O₄

References:

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

ⓘ 'Fayalite-Forsterite Series'

Description: Olivine composition [Fa18] in Mason, 1963, Fa18.6-18.8 in McCoy et al., 1995.

References:

Merrill, G.P. (1918) On the Fayette County, Texas, meteorite finds of 1978 and 1980 and the probability of their representing two distinct Falls: Proc. U.S. Natl. Mus. 54: 557-561.

Mason, Brian (1963) Olivine composition in chondrites. Geochimica et Cosmochimica Acta, 27 (10) 1011-1023 doi:10.1016/0016-7037(63)90062-0

McCoy, T.J., Ehlmann, A.J. & Keil, K. (1995) The Fayette County, Texas, meteorites: Meteoritics & Planetary Science 30(6): 776–780. (Nov. 1995).

ⓘ Isocubanite

Formula: CuFe₂S₃

References:

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

ⓘ 'Limonite'

References:

McCoy, T.J., Ehlmann, A.J. & Keil, K. (1995) The Fayette County, Texas, meteorites: Meteoritics & Planetary Science 30(6): 776–780. (Nov. 1995).

ⓘ Mackinawite

Formula: FeS

References:

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

ⓘ Native Copper

Formula: Cu

References:

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

ⓘ Native Iron

Formula: Fe

References:

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

ⓘ Native Iron var. Kamacite

Formula: (Fe,Ni)

References:

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

ⓘ Pentlandite

Formula: (Ni_xFe_y)_Σ9S₈

Description: A terrestrial weatherate (not primary!)

References:

McCoy, T.J., Ehlmann, A.J. & Keil, K. (1995) The Fayette County, Texas, meteorites: Meteoritics & Planetary Science 30(6): 776–780. (Nov. 1995).

ⓘ 'Pyroxene Group'

Formula: ADSi₂O₆

Description: Pyroxene is often polysynthetically twinned. Composition Fs16.3-Fs16.7Wo~1.

References:

Merrill, G.P. (1918) On the Fayette County, Texas, meteorite finds of 1978 and 1980 and the probability of their representing two distinct Falls: Proc. U.S. Natl. Mus. 54: 557-561.

McCoy, T.J., Ehlmann, A.J. & Keil, K. (1995) The Fayette County, Texas, meteorites: Meteoritics & Planetary Science 30(6): 776–780. (Nov. 1995).

ⓘ Taenite

Formula: (Fe,Ni)

References:

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

ⓘ Troilite

Formula: FeS

References:

Merrill, G.P. (1918) On the Fayette County, Texas, meteorite finds of 1978 and 1980 and the probability of their representing two distinct Falls: Proc. U.S. Natl. Mus. 54: 557-561.

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

McCoy, T.J., Ehlmann, A.J. & Keil, K. (1995) The Fayette County, Texas, meteorites: Meteoritics & Planetary Science 30(6): 776–780. (Nov. 1995).

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Native Copper	1.AA.05	Cu
ⓘ	Native Iron	1.AE.05	Fe
ⓘ	var. Kamacite	1.AE.05	(Fe,Ni)
ⓘ	Taenite	1.AE.10	(Fe,Ni)
Group 2 - Sulphides and Sulfosalts
ⓘ	Pentlandite	2.BB.15	(Ni_xFe_y)_Σ9S₈
ⓘ	Isocubanite	2.CB.55b	CuFe₂S₃
ⓘ	Troilite	2.CC.10	FeS
ⓘ	Mackinawite	2.CC.25	FeS
Group 4 - Oxides and Hydroxides
ⓘ	Chromite	4.BB.05	Fe²⁺Cr³⁺₂O₄
Unclassified
ⓘ	'Limonite'	-
ⓘ	'Fayalite-Forsterite Series'	-
ⓘ	'Pyroxene Group'	-	ADSi₂O₆

List of minerals for each chemical element

O	Oxygen
O	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
O	ⓘ Fayalite-Forsterite Series
O	ⓘ Pyroxene Group	ADSi₂O₆
Mg	Magnesium
Mg	ⓘ Fayalite-Forsterite Series
Si	Silicon
Si	ⓘ Fayalite-Forsterite Series
Si	ⓘ Pyroxene Group	ADSi₂O₆
S	Sulfur
S	ⓘ Isocubanite	CuFe₂S₃
S	ⓘ Mackinawite	FeS
S	ⓘ Pentlandite	(Ni_xFe_y)_Σ9S₈
S	ⓘ Troilite	FeS
Cr	Chromium
Cr	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
Fe	Iron
Fe	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
Fe	ⓘ Native Iron	Fe
Fe	ⓘ Isocubanite	CuFe₂S₃
Fe	ⓘ Native Iron var. Kamacite	(Fe,Ni)
Fe	ⓘ Mackinawite	FeS
Fe	ⓘ Pentlandite	(Ni_xFe_y)_Σ9S₈
Fe	ⓘ Taenite	(Fe,Ni)
Fe	ⓘ Troilite	FeS
Fe	ⓘ Fayalite-Forsterite Series
Ni	Nickel
Ni	ⓘ Native Iron var. Kamacite	(Fe,Ni)
Ni	ⓘ Pentlandite	(Ni_xFe_y)_Σ9S₈
Ni	ⓘ Taenite	(Fe,Ni)
Cu	Copper
Cu	ⓘ Native Copper	Cu
Cu	ⓘ Isocubanite	CuFe₂S₃

Other Regions, Features and Areas containing this locality

North AmericaContinent

North America PlateTectonic Plate

Gulf of Mexico BasinBasin
Sabine DomainDomain
Sabine TerraneVolcanic Arc

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References

www.lpi.usra.edu (n.d.) http://www.lpi.usra.edu/meteor/metbull.php?code=5303

Merrill, G.P. (1918) On the Fayette County, Texas, meteorite finds of 1978 and 1980 and the probability of their representing two distinct Falls: Proc. U.S. Natl. Mus. 54: 557-561.

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

McCoy, T.J., Ehlmann, A.J. & Keil, K. (1995) The Fayette County, Texas, meteorites: Meteoritics & Planetary Science 30(6): 776–780. (Nov. 1995).

Graf, Th. & Marti, K. (1995) Collisional history of H chondrites. J. Geophys. Res. (Planets) 100, 21247–21263.

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

www.encyclopedia-of-meteorites.com (n.d.) http://www.encyclopedia-of-meteorites.com/test/Cedar-texas_don_edwards.JPG

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Cedar (Texas) meteorite, Fayette County, Texas, USAiRegional Level TypesCedar (Texas) meteoriteMeteorite Fall Location Fayette 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

Cedar (Texas) meteorite, Fayette County, Texas, USA i
Regional Level Types
Cedar (Texas) meteorite Meteorite Fall Location
Fayette County County
Texas State
USA Country