Sombrerete contains ~7.3 vol% rounded or globular silicate inclusions located mainly at grain boundaries of the Fe,Ni metal host. In cut surfaces,
inclusions are ~1–10 mm in diameter (mainly ~2 mm), and have spacings from each other of >2 mm. Tiny cracklike features, possibly healed metal grain boundaries, extend between inclusions and may have once connected them.

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Standard Detailed Gallery Strunz Chemical Elements

Mineral List

17 valid minerals. 1 (TL) - type locality of valid minerals.

Meteorite/Rock Types Recorded

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Alphabetical List Tree Diagram

ⓘ IAB-sHL iron meteorite

Detailed Mineral List:

ⓘ Albite

Formula: Na(AlSi₃O₈)

References:

Ruzicka, Alex, Hutson, Melinda, Floss, Christine (2006) Petrology of silicate inclusions in the Sombrerete ungrouped iron meteorite: Implications for the origins of IIE-type silicate-bearing irons. Meteoritics & Planetary Science, 41 (11) 1797-1831 doi:10.1111/j.1945-5100.2006.tb00452.x

ⓘ Albite var. Oligoclase

Formula: (Na,Ca)[Al(Si,Al)Si₂O₈]

References:

ⓘ Anorthite

Formula: Ca(Al₂Si₂O₈)

References:

ⓘ Anorthite var. Bytownite

Formula: (Ca,Na)[Al(Al,Si)Si₂O₈]

References:

ⓘ 'Calcic plagioclase'

References:

ⓘ Chlorapatite

Formula: Ca₅(PO₄)₃Cl

References:

ⓘ Chromite

Formula: Fe²⁺Cr³⁺₂O₄

References:

ⓘ Enstatite

Formula: Mg₂Si₂O₆

References:

ⓘ Hematite

Formula: Fe₂O₃

References:

ⓘ Ilmenite

Formula: Fe²⁺TiO₃

References:

ⓘ Kaersutite

Formula: NaCa₂(Mg₃AlTi⁴⁺)(Si₆Al₂)O₂₂O₂

References:

ⓘ 'Low-calcium pyroxene'

References:

ⓘ Merrillite

Formula: Ca₉NaMg(PO₄)₇

References:

ⓘ 'Microlite Group'

Formula: A_2-mTa₂X_6-wZ_1-n

References:

ⓘ Native Iron

Formula: Fe

References:

ⓘ Native Iron var. Kamacite

Formula: (Fe,Ni)

References:

ⓘ Orthoclase

Formula: K(AlSi₃O₈)

References:

ⓘ 'Orthopyroxene Subgroup'

References:

ⓘ 'Plagioclase'

Formula: (Na,Ca)[(Si,Al)AlSi₂]O₈

References:

ⓘ 'Plessite'

References:

ⓘ 'Pyroxene Group'

Formula: ADSi₂O₆

References:

ⓘ 'Pyroxene Group var. Al-pyroxene'

Formula: M2M1(Si_1.5Al_0.5)O₆

References:

ⓘ Quartz

Formula: SiO₂

References:

ⓘ Schreibersite

Formula: (Fe,Ni)₃P

References:

ⓘ Sombrereteite (TL)

Formula: NaCa₃(Al₇Si₉)O₃₂

Type Locality:

References:

Gu, X., Ke, Z., Yang, H., Qu, K., Liu, G., Liu, Y., Chen, Y., Gao, R., Ai, Q., Huang, S., Ma, B. and Liu, Y. (2026) Sombrereteite, IMA 2025-095a. CNMNC Newsletter 91, Mineralogical Magazine, 90, https://doi.org/10.1180/mgm.2026.10236

ⓘ Taenite

Formula: (Ni,Fe)

References:

ⓘ Troilite

Formula: FeS

References:

ⓘ Yagiite

Formula: Na◻₂Mg₂Al₃[Al₂Si₁₀O₃₀]

References:

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	(Ni,Fe)
ⓘ	Schreibersite	1.BD.05	(Fe,Ni)₃P
Group 2 - Sulphides and Sulfosalts
ⓘ	Troilite	2.CC.10	FeS
Group 4 - Oxides and Hydroxides
ⓘ	'Microlite Group'	4.00.	A_2-mTa₂X_6-wZ_1-n
ⓘ	Chromite	4.BB.05	Fe²⁺Cr³⁺₂O₄
ⓘ	Hematite	4.CB.05	Fe₂O₃
ⓘ	Ilmenite	4.CB.05	Fe²⁺TiO₃
ⓘ	Quartz	4.DA.05	SiO₂
Group 8 - Phosphates, Arsenates and Vanadates
ⓘ	Merrillite	8.AC.45	Ca₉NaMg(PO₄)₇
ⓘ	Chlorapatite	8.BN.05	Ca₅(PO₄)₃Cl
Group 9 - Silicates
ⓘ	Yagiite	9.CM.05	Na◻₂Mg₂Al₃[Al₂Si₁₀O₃₀]
ⓘ	Enstatite	9.DA.05	Mg₂Si₂O₆
ⓘ	Kaersutite	9.DE.15	NaCa₂(Mg₃AlTi⁴⁺)(Si₆Al₂)O₂₂O₂
ⓘ	Orthoclase	9.FA.30	K(AlSi₃O₈)
ⓘ	Albite	9.FA.35	Na(AlSi₃O₈)
ⓘ	Anorthite	9.FA.35	Ca(Al₂Si₂O₈)
ⓘ	var. Bytownite	9.FA.35	(Ca,Na)[Al(Al,Si)Si₂O₈]
ⓘ	Albite var. Oligoclase	9.FA.35	(Na,Ca)[Al(Si,Al)Si₂O₈]
Unclassified
ⓘ	'Pyroxene Group var. Al-pyroxene'	-	M2M1(Si_1.5Al_0.5)O₆
ⓘ	'Plagioclase'	-	(Na,Ca)[(Si,Al)AlSi₂]O₈
ⓘ	'Pyroxene Group'	-	ADSi₂O₆
ⓘ	'Plessite'	-
ⓘ	'Orthopyroxene Subgroup'	-
ⓘ	'Low-calcium pyroxene'	-
ⓘ	'Calcic plagioclase'	-
ⓘ	Sombrereteite (TL)	-	NaCa₃(Al₇Si₉)O₃₂

List of minerals for each chemical element

O	Oxygen
O	ⓘ Pyroxene Group var. Al-pyroxene	M2M1(Si_1.5Al_0.5)O₆
O	ⓘ Albite	Na(AlSi₃O₈)
O	ⓘ Anorthite	Ca(Al₂Si₂O₈)
O	ⓘ Anorthite var. Bytownite	(Ca,Na)[Al(Al,Si)Si₂O₈]
O	ⓘ Chlorapatite	Ca₅(PO₄)₃Cl
O	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
O	ⓘ Enstatite	Mg₂Si₂O₆
O	ⓘ Hematite	Fe₂O₃
O	ⓘ Ilmenite	Fe²⁺TiO₃
O	ⓘ Kaersutite	NaCa₂(Mg₃AlTi⁴⁺)(Si₆Al₂)O₂₂O₂
O	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
O	ⓘ Orthoclase	K(AlSi₃O₈)
O	ⓘ Quartz	SiO₂
O	ⓘ Yagiite	Na◻₂Mg₂Al₃[Al₂Si₁₀O₃₀]
O	ⓘ Merrillite	Ca₉NaMg(PO₄)₇
O	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
O	ⓘ Pyroxene Group	ADSi₂O₆
O	ⓘ Sombrereteite	NaCa₃(Al₇Si₉)O₃₂
Na	Sodium
Na	ⓘ Albite	Na(AlSi₃O₈)
Na	ⓘ Anorthite var. Bytownite	(Ca,Na)[Al(Al,Si)Si₂O₈]
Na	ⓘ Kaersutite	NaCa₂(Mg₃AlTi⁴⁺)(Si₆Al₂)O₂₂O₂
Na	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
Na	ⓘ Yagiite	Na◻₂Mg₂Al₃[Al₂Si₁₀O₃₀]
Na	ⓘ Merrillite	Ca₉NaMg(PO₄)₇
Na	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Na	ⓘ Sombrereteite	NaCa₃(Al₇Si₉)O₃₂
Mg	Magnesium
Mg	ⓘ Enstatite	Mg₂Si₂O₆
Mg	ⓘ Kaersutite	NaCa₂(Mg₃AlTi⁴⁺)(Si₆Al₂)O₂₂O₂
Mg	ⓘ Yagiite	Na◻₂Mg₂Al₃[Al₂Si₁₀O₃₀]
Mg	ⓘ Merrillite	Ca₉NaMg(PO₄)₇
Al	Aluminium
Al	ⓘ Pyroxene Group var. Al-pyroxene	M2M1(Si_1.5Al_0.5)O₆
Al	ⓘ Albite	Na(AlSi₃O₈)
Al	ⓘ Anorthite	Ca(Al₂Si₂O₈)
Al	ⓘ Anorthite var. Bytownite	(Ca,Na)[Al(Al,Si)Si₂O₈]
Al	ⓘ Kaersutite	NaCa₂(Mg₃AlTi⁴⁺)(Si₆Al₂)O₂₂O₂
Al	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
Al	ⓘ Orthoclase	K(AlSi₃O₈)
Al	ⓘ Yagiite	Na◻₂Mg₂Al₃[Al₂Si₁₀O₃₀]
Al	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Al	ⓘ Sombrereteite	NaCa₃(Al₇Si₉)O₃₂
Si	Silicon
Si	ⓘ Pyroxene Group var. Al-pyroxene	M2M1(Si_1.5Al_0.5)O₆
Si	ⓘ Albite	Na(AlSi₃O₈)
Si	ⓘ Anorthite	Ca(Al₂Si₂O₈)
Si	ⓘ Anorthite var. Bytownite	(Ca,Na)[Al(Al,Si)Si₂O₈]
Si	ⓘ Enstatite	Mg₂Si₂O₆
Si	ⓘ Kaersutite	NaCa₂(Mg₃AlTi⁴⁺)(Si₆Al₂)O₂₂O₂
Si	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
Si	ⓘ Orthoclase	K(AlSi₃O₈)
Si	ⓘ Quartz	SiO₂
Si	ⓘ Yagiite	Na◻₂Mg₂Al₃[Al₂Si₁₀O₃₀]
Si	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	ⓘ Pyroxene Group	ADSi₂O₆
Si	ⓘ Sombrereteite	NaCa₃(Al₇Si₉)O₃₂
P	Phosphorus
P	ⓘ Chlorapatite	Ca₅(PO₄)₃Cl
P	ⓘ Schreibersite	(Fe,Ni)₃P
P	ⓘ Merrillite	Ca₉NaMg(PO₄)₇
S	Sulfur
S	ⓘ Troilite	FeS
Cl	Chlorine
Cl	ⓘ Chlorapatite	Ca₅(PO₄)₃Cl
K	Potassium
K	ⓘ Orthoclase	K(AlSi₃O₈)
Ca	Calcium
Ca	ⓘ Anorthite	Ca(Al₂Si₂O₈)
Ca	ⓘ Anorthite var. Bytownite	(Ca,Na)[Al(Al,Si)Si₂O₈]
Ca	ⓘ Chlorapatite	Ca₅(PO₄)₃Cl
Ca	ⓘ Kaersutite	NaCa₂(Mg₃AlTi⁴⁺)(Si₆Al₂)O₂₂O₂
Ca	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
Ca	ⓘ Merrillite	Ca₉NaMg(PO₄)₇
Ca	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Ca	ⓘ Sombrereteite	NaCa₃(Al₇Si₉)O₃₂
Ti	Titanium
Ti	ⓘ Ilmenite	Fe²⁺TiO₃
Ti	ⓘ Kaersutite	NaCa₂(Mg₃AlTi⁴⁺)(Si₆Al₂)O₂₂O₂
Cr	Chromium
Cr	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
Fe	Iron
Fe	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
Fe	ⓘ Hematite	Fe₂O₃
Fe	ⓘ Ilmenite	Fe²⁺TiO₃
Fe	ⓘ Native Iron	Fe
Fe	ⓘ Native Iron var. Kamacite	(Fe,Ni)
Fe	ⓘ Schreibersite	(Fe,Ni)₃P
Fe	ⓘ Taenite	(Ni,Fe)
Fe	ⓘ Troilite	FeS
Ni	Nickel
Ni	ⓘ Native Iron var. Kamacite	(Fe,Ni)
Ni	ⓘ Schreibersite	(Fe,Ni)₃P
Ni	ⓘ Taenite	(Ni,Fe)
Ta	Tantalum
Ta	ⓘ Microlite Group	A_2-mTa₂X_6-wZ_1-n

Other Regions, Features and Areas containing this locality

North AmericaContinent

North America Plate

Sierra Madre OccidentalMagmatic Province

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References

[1]Ruzicka, Alex, Hutson, Melinda, Floss, Christine (2006) Petrology of silicate inclusions in the Sombrerete ungrouped iron meteorite: Implications for the origins of IIE-type silicate-bearing irons. Meteoritics & Planetary Science, 41 (11) 1797-1831 doi:10.1111/j.1945-5100.2006.tb00452.x

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Sombrerete meteorite, Sombrerete Municipality, Zacatecas, MexicoiRegional Level TypesSombrerete meteoriteMeteorite Fall Location Sombrerete MunicipalityMunicipality ZacatecasState MexicoCountry 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

Sombrerete meteorite, Sombrerete Municipality, Zacatecas, Mexico i
Regional Level Types
Sombrerete meteorite Meteorite Fall Location
Sombrerete Municipality Municipality
Zacatecas State
Mexico Country