Ordinary chondrite, brecciated (LL4; S4; W0,W2)
Fell, 13 October 1959; 3.705 kg

A 2.045 kg conical stone stuck a home and was found in the yard 30 minutes later. A second stone was recovered from a farm pasture in 1963. The stone is a clearly brecciated meteorite with diverse clasts that are both chondrule-rich and recrystallized within a chondritic host. Chondrules, both olivine-rich and pyroxene-rich (BO, PO, POP, RP) range in size from ~ 0.4—1.5 mm. Olivine (Fa22) and orthopyroxene are dominant with Fe-Ni metal, troilite, and a few other minor opaques. Total iron (~20 wt%) is characteristic of the LL ordinary chondrite group (very low in total iron). The unexpected presence of nepheline indicates some unusual chemistry for this particular meteorite. A cosmic ray exposure age of ~ 40.6 Ma has been reported.

Hamlet is one of only 88 witnessed LL falls and one of only 7 falls listed exactly as an LL4 with The Meteoritical Bulletin Database (Tally of late January 2016). The LL group of ordinary chondrites account for somewhat less than 10% of all meteorite falls.

Major portions of the two stones have been kept at the Field Museum of Natural History (Chicago) and the U.S. National Museum (Washington), respectively.

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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

ⓘ LL4 chondrite meteorite

Detailed Mineral List:

ⓘ Chromite

Formula: Fe²⁺Cr³⁺₂O₄

References:

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

ⓘ Copper

Formula: Cu

References:

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

ⓘ 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: Fayalite value in Mason (1963) and Rubin (1990) are very similar (Fa27),(Fa26.9), respectively.

References:

Mason, B. (1963) Olivine in ordinary chondrites. Geochimica et Cosmochimica Acta 27(9): 1011-1023. (Sept 1963).

Rubin, A. (1990) Olivine & Kamacite in Ordinary Chondrites: Intergroup and Intragroup relationships. Geochimica et Cosmochimica Acta 54: 1217-1230.

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

ⓘ Ilmenite

Formula: Fe²⁺TiO₃

References:

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

ⓘ Iron

Formula: Fe

References:

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

Rubin, A. (1990) Olivine & Kamacite in Ordinary Chondrites: Intergroup and Intragroup relationships. Geochimica et Cosmochimica Acta 54: 1217-1230.

ⓘ Iron var. Kamacite

Formula: (Fe,Ni)

References:

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

Rubin, A. (1990) Olivine & Kamacite in Ordinary Chondrites: Intergroup and Intragroup relationships. Geochimica et Cosmochimica Acta 54: 1217-1230.

ⓘ Merrillite

Formula: Ca₉NaMg(PO₄)₇

Description: Reading "Merrillite" (preferred) for "Whitlockite" (the terrestrial analogue).

References:

Fuchs, L.H. (1969) The Phosphate Mineralogy of Meteorites: IN: Meteoritic Research: Millman, P.M.-Ed.: pp. 683-695.D. Reidel Publishing Company: Dordrecht-Holland.

ⓘ Nepheline

Formula: Na₃K(Al₄Si₄O₁₆)

References:

Fuchs, L.H. (1968) X-ray crystallographic evidence for the meteoritic occurrence of nepheline. Earth and Planetary Science Letters 5(3): 187-190.

ⓘ '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).

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

ⓘ '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).

ⓘ 'Plessite'

References:

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

ⓘ Schreibersite

Formula: (Fe,Ni)₃P

References:

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

ⓘ Spinel

Formula: MgAl₂O₄

References:

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

ⓘ Taenite

Formula: (Fe,Ni)

References:

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

Rubin, A.E. (1994) Metallic copper in ordinary chondrites. Meteoritics 29 (1): 93-98. (Jan 1994).

ⓘ Tetrataenite

Formula: FeNi

References:

Rubin, A.E. (1994) Metallic copper in ordinary chondrites. Meteoritics 29 (1): 93-98. (Jan 1994).

ⓘ Troilite

Formula: FeS

References:

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

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

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Copper	1.AA.05	Cu
ⓘ	Iron var. Kamacite	1.AE.05	(Fe,Ni)
ⓘ		1.AE.05	Fe
ⓘ	Tetrataenite	1.AE.10	FeNi
ⓘ	Taenite	1.AE.10	(Fe,Ni)
ⓘ	Schreibersite	1.BD.05	(Fe,Ni)₃P
Group 2 - Sulphides and Sulfosalts
ⓘ	Troilite	2.CC.10	FeS
Group 4 - Oxides and Hydroxides
ⓘ	Spinel	4.BB.05	MgAl₂O₄
ⓘ	Chromite	4.BB.05	Fe²⁺Cr³⁺₂O₄
ⓘ	Ilmenite	4.CB.05	Fe²⁺TiO₃
Group 8 - Phosphates, Arsenates and Vanadates
ⓘ	Merrillite	8.AC.45	Ca₉NaMg(PO₄)₇
Group 9 - Silicates
ⓘ	Diopside	9.DA.15	CaMgSi₂O₆
ⓘ	Nepheline	9.FA.05	Na₃K(Al₄Si₄O₁₆)
Unclassified Minerals, Rocks, etc.
ⓘ	'Plessite'	-
ⓘ	'Orthopyroxene Subgroup'	-
ⓘ	'Plagioclase'	-	(Na,Ca)[(Si,Al)AlSi₂]O₈
ⓘ	'Fayalite-Forsterite Series'	-

List of minerals for each chemical element

O	Oxygen
O	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
O	ⓘ Ilmenite	Fe²⁺TiO₃
O	ⓘ Spinel	MgAl₂O₄
O	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
O	ⓘ Diopside	CaMgSi₂O₆
O	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
O	ⓘ Merrillite	Ca₉NaMg(PO₄)₇
Na	Sodium
Na	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
Na	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Na	ⓘ Merrillite	Ca₉NaMg(PO₄)₇
Mg	Magnesium
Mg	ⓘ Spinel	MgAl₂O₄
Mg	ⓘ Diopside	CaMgSi₂O₆
Mg	ⓘ Merrillite	Ca₉NaMg(PO₄)₇
Al	Aluminium
Al	ⓘ Spinel	MgAl₂O₄
Al	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
Al	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	Silicon
Si	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
Si	ⓘ Diopside	CaMgSi₂O₆
Si	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
P	Phosphorus
P	ⓘ Schreibersite	(Fe,Ni)₃P
P	ⓘ Merrillite	Ca₉NaMg(PO₄)₇
S	Sulfur
S	ⓘ Troilite	FeS
K	Potassium
K	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
Ca	Calcium
Ca	ⓘ Diopside	CaMgSi₂O₆
Ca	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Ca	ⓘ Merrillite	Ca₉NaMg(PO₄)₇
Ti	Titanium
Ti	ⓘ Ilmenite	Fe²⁺TiO₃
Cr	Chromium
Cr	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
Fe	Iron
Fe	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
Fe	ⓘ Ilmenite	Fe²⁺TiO₃
Fe	ⓘ Iron var. Kamacite	(Fe,Ni)
Fe	ⓘ Schreibersite	(Fe,Ni)₃P
Fe	ⓘ Taenite	(Fe,Ni)
Fe	ⓘ Troilite	FeS
Fe	ⓘ Iron	Fe
Fe	ⓘ Tetrataenite	FeNi
Ni	Nickel
Ni	ⓘ Iron var. Kamacite	(Fe,Ni)
Ni	ⓘ Schreibersite	(Fe,Ni)₃P
Ni	ⓘ Taenite	(Fe,Ni)
Ni	ⓘ Tetrataenite	FeNi
Cu	Copper
Cu	ⓘ Copper	Cu

Other Regions, Features and Areas containing this locality

North America PlateTectonic Plate

Mazatzal DomainDomain
Michigan BasinBasin

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References

(n.d.)

Krinov, E. L. - Editor (1960) The Meteoritical Bulletin, No. 17. Moscow.

Mason, B. (1963) Olivine in ordinary chondrites. Geochimica et Cosmochimica Acta 27(9): 1011-1023. (Sept 1963).

Krinov, E. L. - Editor (1965) The Meteoritical Bulletin, No. 34. Moscow.

Fuchs, L.H. (1968) X-ray crystallographic evidence for the meteoritic occurrence of nepheline. Earth and Planetary Science Letters 5(3): 187-190.

Fuchs, L.H. (1969) The Phosphate Mineralogy of Meteorites: IN: Meteoritic Research: Millman, P.M.-Ed.: pp. 683-695.D. Reidel Publishing Company: Dordrecht-Holland.

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

Rubin, A. (1990) Olivine & Kamacite in Ordinary Chondrites: Intergroup and Intragroup relationships. Geochimica et Cosmochimica Acta 54: 1217-1230.

Rubin, A.E. (1994) Metallic copper in ordinary chondrites. Meteoritics 29 (1): 93-98. (Jan 1994).

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

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

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Hamlet meteorite, Starke County, Indiana, USAiRegional Level TypesHamlet meteoriteMeteorite Fall Location Starke CountyCounty IndianaState USACountry 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

Hamlet meteorite, Starke County, Indiana, USA i
Regional Level Types
Hamlet meteorite Meteorite Fall Location
Starke County County
Indiana State
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