Home Page About Mindat The Mindat Manual History of Mindat Copyright Status Who We Are Our Science Mindat Newsletter [Free Download]Contact Us

Donate to Mindat Sponsor a Page Corporate Sponsorship Sponsored Pages

Learning Center What Is a Mineral?The Most Common Minerals on Earth Information for Educators Mindat Articles Mindat Newsletter [Free Download]The Elements The Mineral Quiz

Search Form Minerals by Properties Minerals by Chemistry Mineral Visual Explorer Advanced Locality Search Random Mineral Random Locality Search by minID Minerals by Country Alphabetical Mineral Index Alphabetical Locality Search Mineral Association Search List of Countries Localities Near Me Photo Search Search Articles Search Glossary The Rock H. Currier Digital Library More Search Options

The Mindat Manual Add a New Photo Rate Photos Locality Edit Report Coordinate Completion Report Add Glossary Item

Minerals Petrology Fossils Meteorites Geologic Time

Mining Companies Statistics Mineral Museums Clubs & Organizations Mineral Shows & Events Device Settings Time Machine

Read Discussions Identification Request

Photo Search Photo Galleries Search by Colour Photo Colour Explorer New Photos Today New Photos Yesterday Members' Photo Galleries Past Photo of the Day Gallery Photography

Dimmitt meteorite, Dimmitt, Castro County, Texas, USA i
Regional Level Types
Dimmitt meteorite Meteorite Fall Location
Dimmitt - not defined -
Castro County County
Texas State
USA Country

Regional Level Types
Dimmitt meteorite	Meteorite Fall Location
Dimmitt	- not defined -
Castro County	County
Texas	State
USA	Country

This page is currently not sponsored. Click here to sponsor this page.

Photos Maps Search

Standard

Specimen Photos (1)Photos by Color Add Photo

Map Pages Nearest Localities

Mineral Search Similar Localities Nearest Localities Predictive Mineralogy Search Google

H3.7 chondrite meteorite

Dimmitt meteorite, Dimmitt, Castro County, Texas, USA

H3.7 chondrite meteorite

Dimmitt meteorite, Dimmitt, Castro County, Texas, USA

H3.7 chondrite meteorite

Dimmitt meteorite, Dimmitt, Castro County, Texas, USA

Latitude & Longitude (WGS84):

34° 34' 59'' North , 102° 10' 0'' West

Latitude & Longitude (decimal):

G#: 9wpkepsw8

Type:

Meteorite Fall Location

Meteorite Class:

H3.7 chondrite meteorite

Meteoritical Society Class:

H3.7

Metbull:

View entry in Meteoritical Bulletin Database

Köppen climate type:

BSk : Cold semi-arid (steppe) climate

Nearest Settlements:

Place	Population	Distance
Nazareth	294 (2017)	7.3km
Dimmitt	4,195 (2017)	13.8km
Hart	1,044 (2017)	22.5km
Hereford	15,021 (2017)	33.4km
Happy	656 (2017)	33.6km

Mindat Locality ID:

28340

Long-form identifier:

mindat:1:2:28340:2

GUID (UUID V4):

Unequilibrated ordinary H chondrite, brecciated (H3.7; S3; W4)
Found, 1942; ~200 kg, many stones

Dimmitt is a blackened regolith breccia dominated by H3 and H5 clasts (40 vol%?) and a dark clastic matrix which together account for ~95% of the meteorite's volume. Impact melt rocks (3%) and non-H chondrite clasts (1-2%) account for most of the remaining content. The major constituents and their compositions are typical of the ordinary H (high iron) chondrites — olivine (Fa29), low Ca pyroxene (Fs24Wo1) [mostly orthopyroxene], Fe-Ni (3.1 wt%) [including kamacite with 2.8 wt% Co]. The complex textures and minor inclusions, however, point to prior near-catastrophic disruption on the original parent body before a 'daughter' fragment was ejected with constituents destined for an eventual earth encounter.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

16 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

ⓘ 'H3.7 chondrite meteorite'

Detailed Mineral List:

ⓘ Albite

Formula: Na(AlSi₃O₈)

References:

Rubin, A. E., Scott, E. R., Taylor, G. J., Keil, K., Allen, J. S., Mayeda, T. K., ... & Bogard, D. D. (1983). Nature of the H chondrite parent body regolith: Evidence from the Dimmitt breccia. Journal of Geophysical Research: Solid Earth (1978–2012), 88(S02), A741-A754.

ⓘ Aragonite

Formula: CaCO₃

Description: In this instance, almost certainly a product of terrestrial weathering.

References:

Scott, E.R.D., Taylor, G.J., Rubin, A.E., Okada, A. & Keil, K. (1981) Graphite-magnetite aggregates in ordinary chondritic meteorites: Nature 291: 544-546. (18 June 1981).

ⓘ Augite

Formula: (Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆

References:

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:

Bischoff, A. & Keil, K. (1983) Ca-Al Chondrules and Inclusions in Ordinary Chondrites Evidence for a Related Genesis of Ordinary and Carbonaceous Chondrites (abstract): Lunar and Planetary Science Conference XIV: 47-48. (March 1983).

ⓘ Chlorapatite

Formula: Ca₅(PO₄)₃Cl

References:

ⓘ Chromite

Formula: Fe²⁺Cr³⁺₂O₄

References:

ⓘ Diamond

Formula: C

References:

Huss, G.R. & Lewis, R.S. (1995) Presolar diamond, SiC, and graphite in primitive chondrites: Abundances as a function of meteorite class and petrologic type. Geochimica et Cosmochimica Acta 59 (1):115-160 (Jan 1995).

ⓘ 'Fayalite-Forsterite Series'

References:

LUNAR AND PLANETARY SCIENCE XI, P. 118. Abstract.

Scott, E.R.D., Taylor, G.J., Rubin, A.E., Okada, A. & Keil, K. (1981) Graphite-magnetite aggregates in ordinary chondritic meteorites: Nature 291: 544-546. (18 June 1981).

ⓘ Forsterite

Formula: Mg₂SiO₄

References:

ⓘ Graphite

Formula: C

References:

ⓘ Magnetite

Formula: Fe²⁺Fe³⁺₂O₄

References:

Scott, E.R.D., Taylor, G.J., Rubin, A.E., Okada, A. & Keil, K. (1981) Graphite-magnetite aggregates in ordinary chondritic meteorites: Nature 291: 544-546. (18 June 1981).

ⓘ Native Iron

Formula: Fe

References:

ⓘ Native Iron var. Kamacite

Formula: (Fe,Ni)

References:

ⓘ 'Orthopyroxene Subgroup'

References:

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

ⓘ 'Plagioclase'

Formula: (Na,Ca)[(Si,Al)AlSi₂]O₈

References:

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

ⓘ 'Plessite'

References:

ⓘ 'Pyroxene Group'

Formula: ADSi₂O₆

References:

Scott, E.R.D., Taylor, G.J., Rubin, A.E., Okada, A. & Keil, K. (1981) Graphite-magnetite aggregates in ordinary chondritic meteorites: Nature 291: 544-546. (18 June 1981).

ⓘ Schreibersite

Formula: (Fe,Ni)₃P

References:

ⓘ Spinel

Formula: MgAl₂O₄

References:

ⓘ Taenite

Formula: (Fe,Ni)

References:

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

ⓘ Tetrataenite

Formula: FeNi

References:

ⓘ Troilite

Formula: FeS

References:

ⓘ Whitlockite

Formula: Ca₉Mg(PO₄)₆(PO₃OH)

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	(Fe,Ni)
ⓘ	Tetrataenite	1.AE.10	FeNi
ⓘ	Schreibersite	1.BD.05	(Fe,Ni)₃P
ⓘ	Graphite	1.CB.05a	C
ⓘ	Diamond	1.CB.10a	C
Group 2 - Sulphides and Sulfosalts
ⓘ	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
Group 5 - Nitrates and Carbonates
ⓘ	Aragonite	5.AB.15	CaCO₃
Group 8 - Phosphates, Arsenates and Vanadates
ⓘ	Whitlockite	8.AC.45	Ca₉Mg(PO₄)₆(PO₃OH)
ⓘ	Chlorapatite	8.BN.05	Ca₅(PO₄)₃Cl
Group 9 - Silicates
ⓘ	Forsterite	9.AC.05	Mg₂SiO₄
ⓘ	Augite	9.DA.15	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
ⓘ	var. Fassaite	9.DA.15	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
ⓘ	Albite	9.FA.35	Na(AlSi₃O₈)
Unclassified
ⓘ	'Fayalite-Forsterite Series'	-
ⓘ	'Plagioclase'	-	(Na,Ca)[(Si,Al)AlSi₂]O₈
ⓘ	'Pyroxene Group'	-	ADSi₂O₆
ⓘ	'Plessite'	-
ⓘ	'Orthopyroxene Subgroup'	-

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Whitlockite	Ca₉Mg(PO₄)₆(PO₃OH)
C	Carbon
C	ⓘ Aragonite	CaCO₃
C	ⓘ Diamond	C
C	ⓘ Graphite	C
O	Oxygen
O	ⓘ Albite	Na(AlSi₃O₈)
O	ⓘ Aragonite	CaCO₃
O	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
O	ⓘ Chlorapatite	Ca₅(PO₄)₃Cl
O	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
O	ⓘ Forsterite	Mg₂SiO₄
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
O	ⓘ Spinel	MgAl₂O₄
O	ⓘ Whitlockite	Ca₉Mg(PO₄)₆(PO₃OH)
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	ⓘ Albite	Na(AlSi₃O₈)
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	ⓘ Forsterite	Mg₂SiO₄
Mg	ⓘ Spinel	MgAl₂O₄
Mg	ⓘ Whitlockite	Ca₉Mg(PO₄)₆(PO₃OH)
Mg	ⓘ Fayalite-Forsterite Series
Mg	ⓘ Augite var. Fassaite	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
Al	Aluminium
Al	ⓘ Albite	Na(AlSi₃O₈)
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	ⓘ Albite	Na(AlSi₃O₈)
Si	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Si	ⓘ Forsterite	Mg₂SiO₄
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
P	ⓘ Schreibersite	(Fe,Ni)₃P
P	ⓘ Whitlockite	Ca₉Mg(PO₄)₆(PO₃OH)
S	Sulfur
S	ⓘ Troilite	FeS
Cl	Chlorine
Cl	ⓘ Chlorapatite	Ca₅(PO₄)₃Cl
Ca	Calcium
Ca	ⓘ Aragonite	CaCO₃
Ca	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Ca	ⓘ Chlorapatite	Ca₅(PO₄)₃Cl
Ca	ⓘ Whitlockite	Ca₉Mg(PO₄)₆(PO₃OH)
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	ⓘ 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	ⓘ Native Iron	Fe
Fe	ⓘ Native Iron var. Kamacite	(Fe,Ni)
Fe	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
Fe	ⓘ Schreibersite	(Fe,Ni)₃P
Fe	ⓘ Taenite	(Fe,Ni)
Fe	ⓘ Tetrataenite	FeNi
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	ⓘ Schreibersite	(Fe,Ni)₃P
Ni	ⓘ Taenite	(Fe,Ni)
Ni	ⓘ Tetrataenite	FeNi

Other Regions, Features and Areas containing this locality

North AmericaContinent

North America PlateTectonic Plate

Mazatzal TerraneVolcanic Arc
Palo Duro BasinBasin
Shawnee DomainDomain

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

(n.d.) Meteoritical Bulletin Database. The International Society for Meteoritics and Planetary Science.

www.lpi.usra.edu (n.d.) http://www.lpi.usra.edu/meteor/metbull.php?code=7645

www.lpi.usra.edu (n.d.) http://www.lpi.usra.edu/meteor/get_original_photo.php?recno=5629388

Scott, E.R.D., Taylor, G.J., Rubin, A.E., Okada, A. & Keil, K. (1981) Graphite-magnetite aggregates in ordinary chondritic meteorites: Nature 291: 544-546. (18 June 1981).

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

Quick NavTop Mineral List Rock Types Other Regions References

Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: October 21, 2026 21:08:36 Page updated: August 12, 2025 01:23:43

Go to top of page

Dimmitt meteorite, Dimmitt, Castro County, Texas, USAiRegional Level TypesDimmitt meteoriteMeteorite Fall Location Dimmitt- not defined - Castro CountyCounty TexasState USACountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

Select Mineral List Type

Mineral List

Meteorite/Rock Types Recorded

Select Rock List Type

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

Dimmitt meteorite, Dimmitt, Castro County, Texas, USA i
Regional Level Types
Dimmitt meteorite Meteorite Fall Location
Dimmitt - not defined -
Castro County County
Texas State
USA Country