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Murray meteorite, Calloway County, Kentucky, USAi
Regional Level Types
Murray meteoriteMeteorite Fall Location
Calloway CountyCounty
KentuckyState
USACountry

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Latitude & Longitude (WGS84):
36° 36' North , 88° 6' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Murray18,954 (2017)19.2km
Hazel406 (2017)22.9km
Dexter277 (2011)23.6km
Hardin599 (2017)25.3km
Dover1,457 (2017)26.5km
Mindat Locality ID:
210274
Long-form identifier:
mindat:1:2:210274:3
GUID (UUID V4):
0


Classification: CM2 Carbonaceous Chondrite

On September 20, 1950, after a brilliant fireball was seen in the neighboring state of Illinois, the Murray meteoroid exploded at a high altitude and after a number of sonic booms were heard, several pieces of the meteorite were recovered some 15 kilometers east of Murray, Kentucky. The largest recovered fragment (3.4 kg) created a small 15 cm deep crater. Murray is the second largest of the 15 recovered CM (Mighei-like) Carbonaceous Chondrite falls (Total Mass - 12.6 kg). Over 400 CM stones have been recovered, but most of them are quite small. The five largest CM meteorites are all witnessed falls. A half-century ago amino acids and other complex organic compounds were found in several extant CM2 meteorites. In the past two decades, interest in CM2 meteorites has quickened as tiny diamonds, corundum and other minerals appear to contain trapped gases which predate the beginnings of the solar nebula.

Murray and other carbonaceous chondrites share similar oxygen isotope ratios and have nearly solar Mg/Si ratios. In addition, the members of the CM chemical group are distinguished by small chondrules and inclusions, abundant fine-grained matrix (~70 vol%), and abundant hydrated minerals. The CM2 type meteorites are further characterized by their Ni-bearing sulfides.

Continuing concerns with Murray and other CM2 meteorites include: (1) Can we determine positively whether the hydrated minerals are preterrestrial? (2) Do exotic inclusions sample other bodies besides a putative CM parent body. (3) Do the minute particles/crystals of graphite, diamond, corundum, silicon carbide etc. tell us about the red giants, novae, and/or supernovae which supplied the heavier elements of the solar nebula.

The Meteoritical Society’s “Meteoritical Society Database” can lead interested parties to more information, references, and photographs.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


28 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

Detailed Mineral List:

Aragonite
Formula: CaCO3
Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Augite var. Fassaite
Formula: (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
Barringerite
Formula: (Fe,Ni)2P
Calcite
Formula: CaCO3
'Chlorite Group'
Chromite
Formula: Fe2+Cr3+2O4
'Clinopyroxene Subgroup'
Corundum
Formula: Al2O3
Cronstedtite
Formula: Fe2+2Fe3+((Si,Fe3+)2O5)(OH)4
Daubréelite
Formula: Fe2+Cr3+2S4
Diamond
Formula: C
Description: Includes very occasional pre-solar diamonds
Diopside
Formula: CaMgSi2O6
Enstatite
Formula: Mg2Si2O6
Eskolaite
Formula: Cr2O3
'Fayalite-Forsterite Series'
Forsterite
Formula: Mg2SiO4
Graphite
Formula: C
Hibonite
Formula: CaAl12O19
Mackinawite
Formula: FeS
Magnetite
Formula: Fe2+Fe3+2O4
Native Iron
Formula: Fe
Native Iron var. Kamacite
Formula: (Fe,Ni)
Paragonite
Formula: NaAl2(AlSi3O10)(OH)2
Pentlandite
Formula: (NixFey)Σ9S8
Perovskite
Formula: CaTiO3
'Pyroxene Group'
Formula: ADSi2O6
Description: Found in spinel-pyroxene inclusions
Pyrrhotite
Formula: Fe1-xS
Schreibersite
Formula: (Fe,Ni)3P
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
'Smectite Group'
Formula: A0.3D2-3[T4O10]Z2 · nH2O
Spinel
Formula: MgAl2O4
Description: Including a few pre-solar grains
Taenite
Formula: (Fe,Ni)
Tochilinite
Formula: Fe2+5-6(Mg,Fe2+)5S6(OH)10
Troilite
Formula: FeS
Tschermakite
Formula: ◻(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Native Iron1.AE.05Fe
var. Kamacite1.AE.05(Fe,Ni)
Taenite1.AE.10(Fe,Ni)
Schreibersite1.BD.05(Fe,Ni)3P
Barringerite1.BD.10(Fe,Ni)2P
Graphite1.CB.05aC
Diamond1.CB.10aC
Group 2 - Sulphides and Sulfosalts
Pentlandite2.BB.15(NixFey)Σ9S8
Pyrrhotite2.CC.10Fe1-xS
Troilite2.CC.10FeS
Mackinawite2.CC.25FeS
Daubréelite2.DA.05Fe2+Cr3+2S4
Tochilinite2.FD.35Fe2+5-6(Mg,Fe2+)5S6(OH)10
Group 4 - Oxides and Hydroxides
Chromite4.BB.05Fe2+Cr3+2O4
Magnetite4.BB.05Fe2+Fe3+2O4
Spinel4.BB.05MgAl2O4
Corundum4.CB.05Al2O3
Eskolaite4.CB.05Cr2O3
Perovskite4.CC.30CaTiO3
Hibonite4.CC.45CaAl12O19
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Aragonite5.AB.15CaCO3
Group 9 - Silicates
Forsterite9.AC.05Mg2SiO4
Enstatite9.DA.05Mg2Si2O6
Augite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
Diopside9.DA.15CaMgSi2O6
Augite
var. Fassaite
9.DA.15(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
Tschermakite9.DE.10◻(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2
Paragonite9.EC.15NaAl2(AlSi3O10)(OH)2
Cronstedtite9.ED.15Fe2+2Fe3+((Si,Fe3+)2O5)(OH)4
Unclassified
'Chlorite Group'-
'Clinopyroxene Subgroup'-
'Fayalite-Forsterite Series'-
'Pyroxene Group'-ADSi2O6
'Smectite Group'-A0.3D2-3[T4O10]Z2 · nH2O
'Serpentine Subgroup'-D3[Si2O5](OH)4

List of minerals for each chemical element

HHydrogen
H CronstedtiteFe22+Fe3+((Si,Fe3+)2O5)(OH)4
H ParagoniteNaAl2(AlSi3O10)(OH)2
H TochiliniteFe2+5-6(Mg,Fe2+)5S6(OH)10
H Tschermakite◻(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2
H Smectite GroupA0.3D2-3[T4O10]Z2 · nH2O
H Serpentine SubgroupD3[Si2O5](OH)4
CCarbon
C AragoniteCaCO3
C CalciteCaCO3
C DiamondC
C GraphiteC
OOxygen
O AragoniteCaCO3
O Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
O CalciteCaCO3
O ChromiteFe2+Cr23+O4
O CorundumAl2O3
O CronstedtiteFe22+Fe3+((Si,Fe3+)2O5)(OH)4
O DiopsideCaMgSi2O6
O EnstatiteMg2Si2O6
O EskolaiteCr2O3
O ForsteriteMg2SiO4
O HiboniteCaAl12O19
O MagnetiteFe2+Fe23+O4
O ParagoniteNaAl2(AlSi3O10)(OH)2
O PerovskiteCaTiO3
O SpinelMgAl2O4
O TochiliniteFe2+5-6(Mg,Fe2+)5S6(OH)10
O Tschermakite◻(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2
O Fayalite-Forsterite Series
O Pyroxene GroupADSi2O6
O Augite var. Fassaite(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
O Smectite GroupA0.3D2-3[T4O10]Z2 · nH2O
O Serpentine SubgroupD3[Si2O5](OH)4
NaSodium
Na ParagoniteNaAl2(AlSi3O10)(OH)2
Na Augite var. Fassaite(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
MgMagnesium
Mg Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mg DiopsideCaMgSi2O6
Mg EnstatiteMg2Si2O6
Mg ForsteriteMg2SiO4
Mg SpinelMgAl2O4
Mg TochiliniteFe2+5-6(Mg,Fe2+)5S6(OH)10
Mg Tschermakite◻(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2
Mg Fayalite-Forsterite Series
Mg Augite var. Fassaite(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
AlAluminium
Al CorundumAl2O3
Al HiboniteCaAl12O19
Al ParagoniteNaAl2(AlSi3O10)(OH)2
Al SpinelMgAl2O4
Al Tschermakite◻(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2
Al Augite var. Fassaite(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
SiSilicon
Si Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Si CronstedtiteFe22+Fe3+((Si,Fe3+)2O5)(OH)4
Si DiopsideCaMgSi2O6
Si EnstatiteMg2Si2O6
Si ForsteriteMg2SiO4
Si ParagoniteNaAl2(AlSi3O10)(OH)2
Si Tschermakite◻(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2
Si Fayalite-Forsterite Series
Si Pyroxene GroupADSi2O6
Si Augite var. Fassaite(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
Si Serpentine SubgroupD3[Si2O5](OH)4
PPhosphorus
P Barringerite(Fe,Ni)2P
P Schreibersite(Fe,Ni)3P
SSulfur
S DaubréeliteFe2+Cr23+S4
S MackinawiteFeS
S Pentlandite(NixFey)Σ9S8
S PyrrhotiteFe1-xS
S TochiliniteFe2+5-6(Mg,Fe2+)5S6(OH)10
S TroiliteFeS
CaCalcium
Ca AragoniteCaCO3
Ca Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Ca CalciteCaCO3
Ca DiopsideCaMgSi2O6
Ca HiboniteCaAl12O19
Ca PerovskiteCaTiO3
Ca Tschermakite◻(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2
Ca Augite var. Fassaite(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
TiTitanium
Ti PerovskiteCaTiO3
Ti Augite var. Fassaite(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
CrChromium
Cr ChromiteFe2+Cr23+O4
Cr DaubréeliteFe2+Cr23+S4
Cr EskolaiteCr2O3
FeIron
Fe Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Fe Barringerite(Fe,Ni)2P
Fe ChromiteFe2+Cr23+O4
Fe CronstedtiteFe22+Fe3+((Si,Fe3+)2O5)(OH)4
Fe DaubréeliteFe2+Cr23+S4
Fe Native IronFe
Fe Native Iron var. Kamacite(Fe,Ni)
Fe MackinawiteFeS
Fe MagnetiteFe2+Fe23+O4
Fe Pentlandite(NixFey)Σ9S8
Fe PyrrhotiteFe1-xS
Fe Schreibersite(Fe,Ni)3P
Fe Taenite(Fe,Ni)
Fe TochiliniteFe2+5-6(Mg,Fe2+)5S6(OH)10
Fe TroiliteFeS
Fe Fayalite-Forsterite Series
Fe Augite var. Fassaite(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
NiNickel
Ni Barringerite(Fe,Ni)2P
Ni Native Iron var. Kamacite(Fe,Ni)
Ni Pentlandite(NixFey)Σ9S8
Ni Schreibersite(Fe,Ni)3P
Ni Taenite(Fe,Ni)

Other Regions, Features and Areas containing this locality


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