Ordinary chondrite, veined (LL5; S5; W0)
Fell, 4 August 1835; 700 g

A 700 g mass & several smaller stones were recovered after a bolide and detonations at Cirencester. Fresh hand specimens reveal a compact light surface with thin dark veins. Indistinct chondrules, often elongated, and chondrule fragments merge into a fine-grained recrystallized matrix. Relic chondrules include those with radial pyroxene (RP), barred olivine (BO), and porphyritic olivine pyroxene (POP) textures. Olivine grains and twinned clinopyroxene are set in a matrix with turbid, devitrified glass. Fe-Ni metal and troilite are found as interstitial patches and as blebs within the matrix. Compositionally, total iron (20.24 wt%) and olivine (Fa28) are characteristic of the H-chondrite geochemical group. Minor amounts of chromite and diopsidic pyroxene have been reported. Mosaicized olivine with planar fractures indicated strong preterrestrial shocks (level S5).

Aldsworth is the both the 5th oldest and 5th smallest [least massive] of the 20 meteorite falls classified exactly as an LL5 chondrite (in July 2016). The main mass has been at the Natural History Museum in London (~0.5 kg).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

ⓘ Chromite

ⓘ 'Clinopyroxene Subgroup'

ⓘ Diopside

ⓘ 'Fayalite-Forsterite Series'

ⓘ 'Meteoritic Iron'

ⓘ 'Orthopyroxene Subgroup'

ⓘ 'Plagioclase'

ⓘ Troilite

3 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

ⓘ LL5 chondrite meteorite

Detailed Mineral List:

ⓘ Chromite

Formula: Fe²⁺Cr³⁺₂O₄

References:

New York

Oakleigh

Madrid

Cape Town. 689 pages.

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

ⓘ 'Clinopyroxene Subgroup'

Description: Twinned Ca-poor monoclinic pyroxene (shocked produced) as well as diopsidic pyroxene are reported.

References:

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

ⓘ Diopside

Formula: CaMgSi₂O₆

References:

Dunn, T.L., Cressy, G., McSween Jr, H.Y. & McCoy, T.J. (2010) Analysis of ordinary chondrites using powder X-ray diffraction: 1. Modal mineral abundances. MAPS 45(1):123-134. (Jan 2010).

ⓘ 'Fayalite-Forsterite Series'

Description: Olivine composition Fa28.

References:

New York

Oakleigh

Madrid

Cape Town. 689 pages.

Graham, A. L., Bevan, A. W. R., Hutchison, R. (1985) Catalogue of Meteorites - With Special Reference to those Represented in the Collection of the British Museum (Natural History) (4th ed.) British Museum (Natural History), London.

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

Dunn, T.L., Cressy, G., McSween Jr, H.Y. & McCoy, T.J. (2010) Analysis of ordinary chondrites using powder X-ray diffraction: 1. Modal mineral abundances. MAPS 45(1):123-134. (Jan 2010).

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

ⓘ 'Meteoritic Iron'

References:

Dunn, T.L., Cressy, G., McSween Jr, H.Y. & McCoy, T.J. (2010) Analysis of ordinary chondrites using powder X-ray diffraction: 1. Modal mineral abundances. MAPS 45(1):123-134. (Jan 2010).

ⓘ 'Orthopyroxene Subgroup'

References:

Dunn, T.L., Cressy, G., McSween Jr, H.Y. & McCoy, T.J. (2010) Analysis of ordinary chondrites using powder X-ray diffraction: 1. Modal mineral abundances. MAPS 45(1):123-134. (Jan 2010).

ⓘ 'Plagioclase'

Formula: (Na,Ca)[(Si,Al)AlSi₂]O₈

References:

Dunn, T.L., Cressy, G., McSween Jr, H.Y. & McCoy, T.J. (2010) Analysis of ordinary chondrites using powder X-ray diffraction: 1. Modal mineral abundances. MAPS 45(1):123-134. (Jan 2010).

ⓘ Troilite

Formula: FeS

References:

Dunn, T.L., Cressy, G., McSween Jr, H.Y. & McCoy, T.J. (2010) Analysis of ordinary chondrites using powder X-ray diffraction: 1. Modal mineral abundances. MAPS 45(1):123-134. (Jan 2010).

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘ	Troilite	2.CC.10	FeS
Group 4 - Oxides and Hydroxides
ⓘ	Chromite	4.BB.05	Fe²⁺Cr³⁺₂O₄
Group 9 - Silicates
ⓘ	Diopside	9.DA.15	CaMgSi₂O₆
Unclassified
ⓘ	'Clinopyroxene Subgroup'	-
ⓘ	'Fayalite-Forsterite Series'	-
ⓘ	'Plagioclase'	-	(Na,Ca)[(Si,Al)AlSi₂]O₈
ⓘ	'Meteoritic Iron'	-
ⓘ	'Orthopyroxene Subgroup'	-

List of minerals for each chemical element

O	Oxygen
O	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
O	ⓘ Diopside	CaMgSi₂O₆
O	ⓘ Fayalite-Forsterite Series
O	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Na	Sodium
Na	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Mg	Magnesium
Mg	ⓘ Diopside	CaMgSi₂O₆
Mg	ⓘ Fayalite-Forsterite Series
Al	Aluminium
Al	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	Silicon
Si	ⓘ Diopside	CaMgSi₂O₆
Si	ⓘ Fayalite-Forsterite Series
Si	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
S	Sulfur
S	ⓘ Troilite	FeS
Ca	Calcium
Ca	ⓘ Diopside	CaMgSi₂O₆
Ca	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Cr	Chromium
Cr	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
Fe	Iron
Fe	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
Fe	ⓘ Troilite	FeS
Fe	ⓘ Fayalite-Forsterite Series

Other Regions, Features and Areas containing this locality

British and Irish IslesGroup of Islands

Eurasian PlateTectonic Plate

AvaloniaVolcanic Arc

EuropeContinent

England
- South-East England Sedimentary AreaGeologic Region

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

www.lpi.usra.edu (n.d.) http://www.lpi.usra.edu/meteor/metbull.php?code=461

www.lpi.usra.edu (n.d.) http://www.lpi.usra.edu/meteor/get_original_photo.php?recno=5638777

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

Dunn, T.L., Cressy, G., McSween Jr, H.Y. & McCoy, T.J. (2010) Analysis of ordinary chondrites using powder X-ray diffraction: 1. Modal mineral abundances. MAPS 45(1):123-134. (Jan 2010).

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.

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 22, 2026 02:23:42 Page updated: July 23, 2025 14:27:37

Go to top of page