Ordinary chondrite, unequilibrated (H3.6; S2; W5)
Find, 1961; 283 kg, a single stone

The Clovis (no. 1) meteorite was uncovered when a plow broke upon striking a heavy and very weathered iron-rich mass (~55 x 54 x 60 cm). Observations of the interior reveal prominent and distinct chondritic textures with usually small (0.5 mm) olivine/pyroxene chondrules present in a 2:1 volumetric ratio. Both olivine (Fa1-28) and pyroxene (Fs1-22) were quite variable as is characteristic of the unequilibrated type 3 ordinary chondrites. Broken chondrules and various, sometimes glassy inclusions are ubiquitous in the fine-grained, dark matrix. Diopside rims, plagioclase, and spinel are less abundant, but still readily observed. Prominent opaques include primary Fe-Ni metal, troilite, and lesser ilmenite. Other phases — sometimes quite minor — but indicative of the rich variety of inclusions include fassaite, anorthic plagioclase, tridymite, and chlorapatite. Weatherates (Fe-oxides and carbonates) are common with the result that the original inventories of troilite and Fe-Ni metal have altered and reduced .

Clovis (no. 1) is the most massive recovered H3.6 chondrite and, indeed, the 3rd most massive of over 2,500 unequilibrated ordinary chondrites recovered by the end of August 2015. Only the NWA 869 L3-6 chondrite and the Sahara 02500 L3 chondrite are more massive among recovered unequilibrated ordinary chondrites. The main mass is with the U.S. National Museum (Smithsonian) in Washington, D.C.

What's in a name? 'Clovis (no. 2)' is a rather large (41.3 kg) but slightly less impressive L6 chondrite which was found not too far away only two years later (1963). In the older literature, the name 'Clovis (a)' occasionally appears for Clovis (no.1). The Grady (1933) and Grady (1937) meteorites had been previously recovered in Curry County so that distinguishing fragments of the various meteorites which have fallen over past decades and centuries has required additional studies.

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Standard Detailed Gallery Strunz Chemical Elements

Mineral List

14 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

ⓘ 'H3.6 chondrite meteorite'

Detailed Mineral List:

ⓘ Augite

Formula: (Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆

References:

Noonan, A. F. (1975) The Clovis /no. 1/, New Mexico, meteorite and Ca, AL and Ti-rich inclusions in ordinary chondrites: Meteoritics 10(1): 51-59. (Mar 1975).

Grady, M. M., Pratesi, G., Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press.

ⓘ Augite var. Fassaite

Formula: (Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]

References:

Noonan, A. F. (1975) The Clovis /no. 1/, New Mexico, meteorite and Ca, AL and Ti-rich inclusions in ordinary chondrites: Meteoritics 10(1): 51-59. (Mar 1975).

Grady, M. M., Pratesi, G., Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press.

ⓘ Chlorapatite

Formula: Ca₅(PO₄)₃Cl

References:

Noonan, A. F. (1975) The Clovis /no. 1/, New Mexico, meteorite and Ca, AL and Ti-rich inclusions in ordinary chondrites: Meteoritics 10(1): 51-59. (Mar 1975).

Grady, M. M., Pratesi, G., Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press.

ⓘ 'Chrome-Spinel (of Dana)'

References:

Wlotzka, F. (2005) Cr spinel and chromite as petrogenetic indicators in ordinary chondrites: Equilibration temperatures of petrologic types 3.7 to 6. Meteoritics & Planetary Science 40 (11) 1673-1702. (Nov 1905).

ⓘ Chromite

Formula: Fe²⁺Cr³⁺₂O₄

References:

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

Wlotzka, F. (2005) Cr spinel and chromite as petrogenetic indictors in ordinary chondrites: Equilibrium temperatures of petrologic type 3.7 to 6. Meteoritics & Planetary Science 40 (11): 1673-1702. (Nov 2005).

ⓘ Clinoenstatite

Formula: MgSiO₃

Description: Fe-poor pyroxene grains within chondrules reach levels as low as Fs2.

References:

Noonan, A.F. (1975) The Clovis (no.1), New Mexico meteorite and Ca, Al, and Ti-rich inclusions in ordinary chondrites. Meteoritics 10 (1): 51-59. (March 1975).

ⓘ 'Clinopyroxene Subgroup'

Description: Clinopyroxene is mostly Ca-poor 'clinobronzite', but both 'clinoenstatite' sensu strictu and diopside are present.

References:

Noonan, A.F. (1975) The Clovis (no.1), New Mexico meteorite and Ca, Al, and Ti-rich inclusions in ordinary chondrites. Meteoritics 10 (1): 51-59. (March 1975).

Grady, M. M., Pratesi, G., Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press.

ⓘ Diopside

Formula: CaMgSi₂O₆

Description: Several Fe-rich spinels w. ilmenite inclusions are rimmed w. diopside.

References:

Brearley, A.J. & Jones, R.H. (1998) Chondritic Meteorites. In: Planetary Materials (Papike, JJ - Ed.), Chapter 3: 1-398: Mineralogical Society of America, Washington, DC, USA.

Grady, M. M., Pratesi, G., Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press.

ⓘ 'Fayalite-Forsterite Series'

Description: Olivine in Chondrules (Fa1-28) has wider range than Olivine in matrix (Fa12-22).

References:

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

Noonan, A. F. (1975) The Clovis /no. 1/, New Mexico, meteorite and Ca, AL and Ti-rich inclusions in ordinary chondrites: Meteoritics 10(1): 51-59. (Mar 1975).

Grady, M. M., Pratesi, G., Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press.

ⓘ Forsterite

Formula: Mg₂SiO₄

Description: Olivine in Chondrules (Fa1-28) is sometimes nearly pure forsterite.

References:

Noonan, A. F. (1975) The Clovis /no. 1/, New Mexico, meteorite and Ca, AL and Ti-rich inclusions in ordinary chondrites: Meteoritics 10(1): 51-59. (Mar 1975).

ⓘ 'Glass'

Description: Glass of nepheline composition in one amoeboid inclusion.

References:

Noonan, A. F. (1975) The Clovis /no. 1/, New Mexico, meteorite and Ca, AL and Ti-rich inclusions in ordinary chondrites: Meteoritics 10(1): 51-59. (Mar 1975).

Grady, M. M., Pratesi, G., Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press.

ⓘ Ilmenite

Formula: Fe²⁺TiO₃

References:

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

Brearley, A.J. & Jones, R.H. (1998) Chondritic Meteorites. In: Planetary Materials (Papike, JJ - Ed.), Chapter 3: 1-398: Mineralogical Society of America, Washington, DC, USA.

Grady, M. M., Pratesi, G., Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press.

ⓘ Isocubanite

Formula: CuFe₂S₃

References:

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

ⓘ Magnetite

Formula: Fe²⁺Fe³⁺₂O₄

Description: Secondary product of Fe-Ni metal weathering.

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

ⓘ 'Orthopyroxene Subgroup'

Description: Olivine, plagioclase, and orthopyroxene in chondrules.

References:

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

ⓘ 'Plagioclase'

Formula: (Na,Ca)[(Si,Al)AlSi₂]O₈

Description: Plagioclase - An75-80.

References:

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

Noonan, A. F. (1975) The Clovis /no. 1/, New Mexico, meteorite and Ca, AL and Ti-rich inclusions in ordinary chondrites: Meteoritics 10(1): 51-59. (Mar 1975).

Grady, M. M., Pratesi, G., Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press.

ⓘ 'Pyroxene Group'

Formula: ADSi₂O₆

References:

Noonan, A. F. (1975) The Clovis /no. 1/, New Mexico, meteorite and Ca, AL and Ti-rich inclusions in ordinary chondrites: Meteoritics 10(1): 51-59. (Mar 1975).

Grady, M. M., Pratesi, G., Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press.

ⓘ Spinel

Formula: MgAl₂O₄

Description: Spinel - Both Fe-rich and Cr-rich spinels are noted in addition to chromite, sensu strictu.

References:

Noonan, A. F. (1975) The Clovis /no. 1/, New Mexico, meteorite and Ca, AL and Ti-rich inclusions in ordinary chondrites: Meteoritics 10(1): 51-59. (Mar 1975).

Brearley, A.J. & Jones, R.H. (1998) Chondritic Meteorites. In: Planetary Materials (Papike, JJ - Ed.), Chapter 3: 1-398: Mineralogical Society of America, Washington, DC, USA.

Grady, M. M., Pratesi, G., Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press.

ⓘ Taenite

Formula: (Fe,Ni)

References:

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

ⓘ Tridymite

Formula: SiO₂

Description: Tridymite dendrites observed in bladed pyroxene chondrule.

References:

Noonan, A. F. (1975) The Clovis /no. 1/, New Mexico, meteorite and Ca, AL and Ti-rich inclusions in ordinary chondrites: Meteoritics 10(1): 51-59. (Mar 1975).

Grady, M. M., Pratesi, G., Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press.

ⓘ Troilite

Formula: FeS

References:

Krinov, E. L. - Editor (1961) The Meteoritical Bulletin, No. 22. Moscow. (Oct 1961).

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

Noonan, A. F. (1975) The Clovis /no. 1/, New Mexico, meteorite and Ca, AL and Ti-rich inclusions in ordinary chondrites: Meteoritics 10(1): 51-59. (Mar 1975).

Grady, M. M., Pratesi, G., Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press.

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)
Group 2 - Sulphides and Sulfosalts
ⓘ	Isocubanite	2.CB.55b	CuFe₂S₃
ⓘ	Troilite	2.CC.10	FeS
Group 4 - Oxides and Hydroxides
ⓘ	Chromite	4.BB.05	Fe²⁺Cr³⁺₂O₄
ⓘ	Magnetite	4.BB.05	Fe²⁺Fe³⁺₂O₄
ⓘ	Spinel	4.BB.05	MgAl₂O₄
ⓘ	Ilmenite	4.CB.05	Fe²⁺TiO₃
ⓘ	Tridymite	4.DA.10	SiO₂
Group 8 - Phosphates, Arsenates and Vanadates
ⓘ	Chlorapatite	8.BN.05	Ca₅(PO₄)₃Cl
Group 9 - Silicates
ⓘ	Forsterite	9.AC.05	Mg₂SiO₄
ⓘ	Clinoenstatite	9.DA.10	MgSiO₃
ⓘ	Augite	9.DA.15	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
ⓘ	Diopside	9.DA.15	CaMgSi₂O₆
ⓘ	Augite var. Fassaite	9.DA.15	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
Unclassified
ⓘ	'Clinopyroxene Subgroup'	-
ⓘ	'Fayalite-Forsterite Series'	-
ⓘ	'Plagioclase'	-	(Na,Ca)[(Si,Al)AlSi₂]O₈
ⓘ	'Pyroxene Group'	-	ADSi₂O₆
ⓘ	'Chrome-Spinel (of Dana)'	-
ⓘ	'Orthopyroxene Subgroup'	-
ⓘ	'Glass'	-

List of minerals for each chemical element

O	Oxygen
O	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
O	ⓘ Chlorapatite	Ca₅(PO₄)₃Cl
O	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
O	ⓘ Clinoenstatite	MgSiO₃
O	ⓘ Diopside	CaMgSi₂O₆
O	ⓘ Forsterite	Mg₂SiO₄
O	ⓘ Ilmenite	Fe²⁺TiO₃
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
O	ⓘ Spinel	MgAl₂O₄
O	ⓘ Tridymite	SiO₂
O	ⓘ Fayalite-Forsterite Series
O	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
O	ⓘ Pyroxene Group	ADSi₂O₆
O	ⓘ Augite var. Fassaite	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
Na	Sodium
Na	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Na	ⓘ Augite var. Fassaite	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
Mg	Magnesium
Mg	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Mg	ⓘ Clinoenstatite	MgSiO₃
Mg	ⓘ Diopside	CaMgSi₂O₆
Mg	ⓘ Forsterite	Mg₂SiO₄
Mg	ⓘ Spinel	MgAl₂O₄
Mg	ⓘ Fayalite-Forsterite Series
Mg	ⓘ Augite var. Fassaite	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
Al	Aluminium
Al	ⓘ Spinel	MgAl₂O₄
Al	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Al	ⓘ Augite var. Fassaite	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
Si	Silicon
Si	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Si	ⓘ Clinoenstatite	MgSiO₃
Si	ⓘ Diopside	CaMgSi₂O₆
Si	ⓘ Forsterite	Mg₂SiO₄
Si	ⓘ Tridymite	SiO₂
Si	ⓘ Fayalite-Forsterite Series
Si	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	ⓘ Pyroxene Group	ADSi₂O₆
Si	ⓘ Augite var. Fassaite	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
P	Phosphorus
P	ⓘ Chlorapatite	Ca₅(PO₄)₃Cl
S	Sulfur
S	ⓘ Isocubanite	CuFe₂S₃
S	ⓘ Troilite	FeS
Cl	Chlorine
Cl	ⓘ Chlorapatite	Ca₅(PO₄)₃Cl
Ca	Calcium
Ca	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Ca	ⓘ Chlorapatite	Ca₅(PO₄)₃Cl
Ca	ⓘ Diopside	CaMgSi₂O₆
Ca	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Ca	ⓘ Augite var. Fassaite	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
Ti	Titanium
Ti	ⓘ Ilmenite	Fe²⁺TiO₃
Ti	ⓘ Augite var. Fassaite	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
Cr	Chromium
Cr	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
Fe	Iron
Fe	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Fe	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
Fe	ⓘ Ilmenite	Fe²⁺TiO₃
Fe	ⓘ Native Iron	Fe
Fe	ⓘ Isocubanite	CuFe₂S₃
Fe	ⓘ Native Iron var. Kamacite	(Fe,Ni)
Fe	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
Fe	ⓘ Taenite	(Fe,Ni)
Fe	ⓘ Troilite	FeS
Fe	ⓘ Fayalite-Forsterite Series
Fe	ⓘ Augite var. Fassaite	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
Ni	Nickel
Ni	ⓘ Native Iron var. Kamacite	(Fe,Ni)
Ni	ⓘ Taenite	(Fe,Ni)
Cu	Copper
Cu	ⓘ Isocubanite	CuFe₂S₃

Other Regions, Features and Areas containing this locality

North AmericaContinent

North America PlateTectonic Plate

Mazatzal DomainDomain
Mazatzal TerraneVolcanic Arc

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References

www.lpi.usra.edu (n.d.) http://www.lpi.usra.edu/meteor/docs/mb22.pdf

www.lpi.usra.edu (n.d.) http://www.lpi.usra.edu/meteor/metbull.php?code=5385

www.lpi.usra.edu (n.d.) http://www.lpi.usra.edu/meteor/get_original_photo.php?recno=5628518

Krinov, E. L. - Editor (1961) The Meteoritical Bulletin, No. 22. Moscow. (Oct 1961).

Noonan, A.F. (1975) The Clovis (no.1), New Mexico meteorite and Ca, Al, and Ti-rich inclusions in ordinary chondrites. Meteoritics 10 (1): 51-59. (March 1975).

(1975)

Brearley, A.J. & Jones, R.H. (1998) Chondritic Meteorites. In: Planetary Materials (Papike, JJ - Ed.), Chapter 3: 1-398: Mineralogical Society of America, Washington, DC, USA.

Hanon, P., Chaussidon, M. & Robert, F. (1999) Distribution of Li-Be-B in meteoritic chondrules: Meteoritics & Planetary Science 34(2): 247-258. (March 1999).

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

Lauretta, Dante. S.; Killgore, Marvin (2005) A Color Atlas of Meteorites in Thin Section. Southwest Meteorite Press.

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

Grady, M. M., Pratesi, G., Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press.

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Clovis (no. 1) meteorite, Roosevelt County, New Mexico, USAiRegional Level TypesClovis (no. 1) meteoriteMeteorite Fall Location Roosevelt CountyCounty New MexicoState USACountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

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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

Clovis (no. 1) meteorite, Roosevelt County, New Mexico, USA i
Regional Level Types
Clovis (no. 1) meteorite Meteorite Fall Location
Roosevelt County County
New Mexico State
USA Country