Ordinary chondrite, unequilibrated (LL3.6;S3;W2)
Fall, 3 October 1883; 1.393 kg

A bolide and detonations were followed by the fall of at least 3 stones, 2 of which were recovered. The average olivine composition (Fa 30) and total iron (~19%) indicated a member of the very low-iron LL Ordinary chondrite group. Prominent chondrules (porphyritic olivine, radial pyroxene, …) and a wide range of pyroxene composition (Fs0-30) more specifically indicated an unequilibrated ordinary chondrite. Undulose extinction in olivine and twinned clinopyroxene record rather significant (level S3) pre-terrestrial shock event(s). In addition to the expected dominant olivine-pyroxene found in both chondrules and matrix, minor amounts of Fe-Ni metal, troilite, and plagioclase are prominent. However, much smaller carbide-magnetite aggregates and Al-rich inclusions have, perhaps, been more widely followed than the more predictable components of the meteorite. The meteorite is also a gas-rich breccia, suggesting that the pre-entry meteoroid must have been rather small for a significant period before its entry into the earth's atmosphere. A cosmic ray exposure age of ~ 25 Ma is reported.

Ngawi is one of only 44 witnessed unequilibrated ordinary chondrite falls. At the present time only Ngawi and the larger Parnallee 1857 fall (77.6 kg) are the only two meteorites specifically listed as LL3.6 ordinary chondrites at the Meteoritical Bulletin Database (Sept 2015). As the new millennium began the main masses of both Ngawi fragments ('Karang Mojo' and 'Ngawi') had been held at the University of Leiden for over a century.

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Standard Detailed Gallery Strunz Chemical Elements

Mineral List

12 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

ⓘ 'LL3.6 chondrite meteorite'

Detailed Mineral List:

ⓘ 'Apatite'

Formula: Ca₅(PO₄)₃(Cl/F/OH)

Reference: Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.

ⓘ Augite

Formula: (Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆

ⓘ Augite var. Fassaite

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

ⓘ Chromite

Formula: Fe²⁺Cr³⁺₂O₄

Reference: Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.

ⓘ 'Clinopyroxene Subgroup'

Reference: Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages. ; Fodor, R.V. & Keil, K. (1975) Implications of poikilitic textures in LL-group chondrites. Meteoritics 10 (4): 325-339. (Dec. 1975).

ⓘ Cohenite

Formula: Fe₃C

ⓘ Diopside

Formula: CaMgSi₂O₆

Description: Ca-rich clinopyroxene in poikilitic lithic fragments.

Reference: Fodor, R.V. & Keil, K. (1975) Implications of poikilitic textures in LL-group chondrites. Meteoritics 10(4), 325-340. (Dec 1975).

ⓘ 'Fayalite-Forsterite Series'

Description: Undulose extinction indicates moderately strong shock

Reference: 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). ; Scott, E. R. D., McCoy, T. J., & Keil, K. (1993) Post-metamorphic brecciation in type 3 ordinary chondrites: Lunar and Planetary Science Conference XXIV: Part 3: N-Z: 1267-1268. (March 1993).; Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages. ; Fodor, R.V. & Keil, K. (1975) Implications of poikilitic textures in LL-group chondrites. Meteoritics 10(4), 325-340. (Dec 1975).

ⓘ Haxonite

Formula: (Fe,Ni)₂₃C₆

ⓘ Iron

Formula: Fe

Description: In places Co-rich [35%] Kamacite; Kamacite w. variable amounts of both Co & Ni

ⓘ Iron var. Kamacite

Formula: (Fe,Ni)

Description: In places Co-rich [35%] Kamacite; Kamacite w. variable amounts of both Co & Ni

ⓘ Magnetite

Formula: Fe²⁺Fe³⁺₂O₄

Description: O-17-rich magnetite

Reference: Lange, D.E. & Larimer, J.W. (1973) Science 182(4115): 920-922. (Nov 1973).; Taylor, G. J., Okada, A., Scott, E. R. D., Rubin, A. E., Huss, G. R., & Keil, K. (1981) The Occurrence and Implications of Carbide-Magnetite Assemblages in Unequilibrated Ordinary Chondrites (abstract): Lunar and Planetary Science Conference XII: pp. 1076-1078. (March 1981).; Choi, B.-G., McKeegan, K. D., Krot, A. N., & Wasson, J. T. (1997) Magnetite in unequilibrated ordinary chondrites - Evidence for an O-17-rich reservoir in the solar nebula: Annual Lunar and Planetary Science Conference XXVIII: p. 227. (March 1997).; Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.

ⓘ Merrillite

Formula: Ca₉NaMg(PO₄)₇

Reference: Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.

ⓘ 'Orthopyroxene Subgroup'

Reference: Fodor, R.V. & Keil, K. (1975) Implications of poikilitic textures in LL-group chondrites. Meteoritics 10 (4): 325-339. (Dec. 1975).; Fodor, R.V. & Keil, K. (1975) Implications of poikilitic textures in LL-group chondrites. Meteoritics 10(4), 325-340. (Dec 1975).

ⓘ Pigeonite

Formula: (Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆

Reference: Mason, B. (1962) The Classification of Chondritic Meteorites: American Museum Novitates: No.2085. New York. 20 pp.

ⓘ 'Plagioclase'

Formula: (Na,Ca)[(Si,Al)AlSi₂]O₈

Reference: Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.

ⓘ 'Pyroxene Group'

Formula: ADSi₂O₆

Reference: Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.

ⓘ Taenite

Formula: (Fe,Ni)

Reference: Scott, E. R. D., McCoy, T. J., & Keil, K. (1993) Post-metamorphic brecciation in type 3 ordinary chondrites: Lunar and Planetary Science Conference XXIV: Part 3: N-Z: 1267-1268. (March 1993).

ⓘ Tetrataenite

Formula: FeNi

Reference: Clarke Jr, R.S. & Scott, E.R.D. (1980) Tetrataenite—ordered FeNi, a new mineral in meteorites. American Mineralogist 65(7-8): 624-639. (Jul-Aug 1980).

ⓘ Troilite

Formula: FeS

Reference: Taylor, G. J., Okada, A., Scott, E. R. D., Rubin, A. E., Huss, G. R., & Keil, K. (1981) The Occurrence and Implications of Carbide-Magnetite Assemblages in Unequilibrated Ordinary Chondrites (abstract): Lunar and Planetary Science Conference XII: pp. 1076-1078. (March 1981).; Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages. ; Fodor, R.V. & Keil, K. (1975) Implications of poikilitic textures in LL-group chondrites. Meteoritics 10 (4): 325-339. (Dec. 1975).; Fodor, R.V. & Keil, K. (1975) Implications of poikilitic textures in LL-group chondrites. Meteoritics 10(4), 325-340. (Dec 1975).

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Cohenite	1.BA.05	Fe₃C
ⓘ	Haxonite	1.BA.10	(Fe,Ni)₂₃C₆
ⓘ	Iron	1.AE.05	Fe
ⓘ	var. Kamacite	1.AE.05	(Fe,Ni)
ⓘ	Taenite	1.AE.10	(Fe,Ni)
ⓘ	Tetrataenite	1.AE.10	FeNi
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
Group 8 - Phosphates, Arsenates and Vanadates
ⓘ	Merrillite	8.AC.45	Ca₉NaMg(PO₄)₇
Group 9 - Silicates
ⓘ	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]
ⓘ	Diopside	9.DA.15	CaMgSi₂O₆
ⓘ	Pigeonite	9.DA.10	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Unclassified Minerals, Rocks, etc.
ⓘ	'Apatite'	-	Ca₅(PO₄)₃(Cl/F/OH)
ⓘ	'Clinopyroxene Subgroup'	-
ⓘ	'Fayalite-Forsterite Series'	-
ⓘ	'Orthopyroxene Subgroup'	-
ⓘ	'Plagioclase'	-	(Na,Ca)[(Si,Al)AlSi₂]O₈
ⓘ	'Pyroxene Group'	-	ADSi₂O₆

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
C	Carbon
C	ⓘ Cohenite	Fe₃C
C	ⓘ Haxonite	(Fe,Ni)₂₃C₆
O	Oxygen
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
O	ⓘ Augite var. Fassaite	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
O	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
O	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
O	ⓘ Merrillite	Ca₉NaMg(PO₄)₇
O	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
O	ⓘ Pyroxene Group	ADSi₂O₆
O	ⓘ Pigeonite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
O	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
O	ⓘ Diopside	CaMgSi₂O₆
F	Fluorine
F	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
Na	Sodium
Na	ⓘ Augite var. Fassaite	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
Na	ⓘ Merrillite	Ca₉NaMg(PO₄)₇
Na	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Mg	Magnesium
Mg	ⓘ Augite var. Fassaite	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
Mg	ⓘ Merrillite	Ca₉NaMg(PO₄)₇
Mg	ⓘ Pigeonite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Mg	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Mg	ⓘ Diopside	CaMgSi₂O₆
Al	Aluminium
Al	ⓘ Augite var. Fassaite	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
Al	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	Silicon
Si	ⓘ Augite var. Fassaite	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
Si	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	ⓘ Pyroxene Group	ADSi₂O₆
Si	ⓘ Pigeonite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Si	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Si	ⓘ Diopside	CaMgSi₂O₆
P	Phosphorus
P	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
P	ⓘ Merrillite	Ca₉NaMg(PO₄)₇
S	Sulfur
S	ⓘ Troilite	FeS
Cl	Chlorine
Cl	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
Ca	Calcium
Ca	ⓘ Augite var. Fassaite	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
Ca	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
Ca	ⓘ Merrillite	Ca₉NaMg(PO₄)₇
Ca	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Ca	ⓘ Pigeonite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Ca	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Ca	ⓘ Diopside	CaMgSi₂O₆
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	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
Fe	ⓘ Cohenite	Fe₃C
Fe	ⓘ Haxonite	(Fe,Ni)₂₃C₆
Fe	ⓘ Iron var. Kamacite	(Fe,Ni)
Fe	ⓘ Troilite	FeS
Fe	ⓘ Augite var. Fassaite	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
Fe	ⓘ Taenite	(Fe,Ni)
Fe	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
Fe	ⓘ Pigeonite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Fe	ⓘ Tetrataenite	FeNi
Fe	ⓘ Iron	Fe
Fe	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Ni	Nickel
Ni	ⓘ Haxonite	(Fe,Ni)₂₃C₆
Ni	ⓘ Iron var. Kamacite	(Fe,Ni)
Ni	ⓘ Taenite	(Fe,Ni)
Ni	ⓘ Tetrataenite	FeNi

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)

Mason, B. (1962) The Classification of Chondritic Meteorites: American Museum Novitates: No.2085. New York. 20 pp.

Lange, D.E. & Larimer, J.W. (1973) Science 182(4115): 920-922. (Nov 1973).

Fodor, R.V. & Keil, K. (1975) Implications of poikilitic textures in LL-group chondrites. Meteoritics 10 (4): 325-339. (Dec. 1975).

Clarke Jr, R.S. & Scott, E.R.D. (1980) Tetrataenite—ordered FeNi, a new mineral in meteorites. American Mineralogist 65(7-8): 624-639. (Jul-Aug 1980).

Taylor, G. J., Okada, A., Scott, E. R. D., Rubin, A. E., Huss, G. R., & Keil, K. (1981) The Occurrence and Implications of Carbide-Magnetite Assemblages in Unequilibrated Ordinary Chondrites (abstract): Lunar and Planetary Science Conference XII: pp. 1076-1078. (March 1981).

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).

Scott, E. R. D., McCoy, T. J., & Keil, K. (1993) Post-metamorphic brecciation in type 3 ordinary chondrites: Lunar and Planetary Science Conference XXIV: Part 3: N-Z: 1267-1268. (March 1993).

Choi, B.-G., McKeegan, K. D., Krot, A. N., & Wasson, J. T. (1997) Magnetite in unequilibrated ordinary chondrites - Evidence for an O-17-rich reservoir in the solar nebula: Annual Lunar and Planetary Science Conference XXVIII: p. 227. (March 1997).

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. (2000). Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge; New York; Oakleigh; Madrid; Cape Town. 689 pages.

Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.

External Links

http://www.lpi.usra.edu/meteor/metbull.php - Meteoritical Bulletin Database
http://www.lpi.usra.edu/meteor/metbull.php?code=16966 -Ngawi@MetBullDatabase
http://www.lpi.usra.edu/meteor/get_original_photo.php?recno=5630947 -photo

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Ngawi meteorite, Ngawi Regency, East Java Province, IndonesiaiRegional Level TypesNgawi meteoriteMeteorite Fall Location Ngawi RegencyRegency East Java ProvinceProvince IndonesiaCountry 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

References

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Ngawi meteorite, Ngawi Regency, East Java Province, Indonesia i
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