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Murray meteorite, Calloway Co., Kentucky, USA

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Latitude & Longitude (WGS84): 36° 36' North , 88° 6' West
Latitude & Longitude (decimal): 36.60000,-88.10000
GeoHash:G#: dn925nzd3
Locality type:Meteorite Fall Location
Meteorite Class:CM2 chondrite meteorite
Meteoritical Society Class:CM2
Metbull:View entry in Meteoritical Bulletin Database
Köppen climate type:Cfa : Humid subtropical climate


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 Strunz Dana Chemical Elements

Mineral List


28 valid minerals.

Meteorite/Rock Types Recorded

Note: this is a very new system on mindat.org and 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
Reference: Martin R. Lee & Rachael Ellen (2008). Aragonite in the Murray (CM2) carbonaceous chondrite: Implications for parent body compaction and aqueous alteration. Meteoritics & Planetary Science 43, #7, 1219-1231. (Oct 2008).
Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Reference: Martin R. Lee & Richard C. Greenwood (1994). Alteration of calcium-and aluminium-rich inclusions in the Murray (CM2) carbonaceous chondrite. Meteoritics (ISSN 0026-1114), #29, no. 6, p. 780-790. (Dec 1994).
Augite var: Fassaite
Formula: (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
Reference: Martin R. Lee & Richard C. Greenwood (1994). Alteration of calcium-and aluminium-rich inclusions in the Murray (CM2) carbonaceous chondrite. Meteoritics (ISSN 0026-1114), #29, no. 6, p. 780-790. (Dec 1994).
Barringerite
Formula: (Fe,Ni)2P
Reference: M. A. Nazarov, G. Kurat, F. Brandstaetter, T. Ntaflos, M. Chaussidon, and P. Hoppe (2009). Phosphorus-Bearing Sulfides and Their Associations in CM Chondrites. Petrology vol. 17, #2, 101-123.
Calcite
Formula: CaCO3
Reference: Martin R. Lee & Rachael Ellen (2008). Aragonite in the Murray (CM2) carbonaceous chondrite: Implications for parent body compaction and aqueous alteration. Meteoritics & Planetary Science 43, #7, 1219-1231. (Oct 2008).
'Chlorite Group'
Reference: Brearley, A. J. & Jones, R. H. (1998): Chondritic Meteorites. In: Planetary Materials (Papike, J. J., Editor): Chapter 3, 398 pages. Mineralogical Society of America: Washington, DC, USA. (1998)
Chromite
Formula: Fe2+Cr3+2O4
Reference: Paul Ramdohr (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages. ; Palmer, E.E. & Lauretta, D.S. (Oct 2011) Aqueous alteration of kamacite in CM chondrites: Meteoritics & Planetary Science: 46 (10): 1587-1607 (Oct 2011)
'Clinopyroxene Subgroup'
Reference: Palmer, E.E. & Lauretta, D.S. (Oct 2011) Aqueous alteration of kamacite in CM chondrites: Meteoritics & Planetary Science: 46 (10): 1587-1607 (Oct 2011)
'CM2 chondrite meteorite'
Reference: Meteoritical Society Database
Corundum
Formula: Al2O3
Reference: Ernst Zinner, Sachiko Amari, Robert Guinness, Ann Nguyen, Frank J. Stadermann, Robert M. Walker & Roy S. Lewis (2003). Presolar spinel grains from the Murray and Murchison carbonaceous chondrites.
Cronstedtite
Formula: Fe2+2Fe3+((Si,Fe3+)2O5)(OH)4
Reference: Theodore E Bunch & S. Chang (1980) Carbonaceous chondrites--II. Carbonaceous chondrite phyllosilicates and light element geochemistry as indicators of parent body processes and surface conditions. Geochim. Cosmochim. Acta 44, 1543-1578. ; Palmer, E.E. & Lauretta, D.S. (Oct 2011) Aqueous alteration of kamacite in CM chondrites: Meteoritics & Planetary Science: 46 (10): 1587-1607 (Oct 2011)
Daubréelite
Formula: Fe2+Cr3+2S4
Reference: Paul Ramdohr (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
Diamond
Formula: C
Description: Includes very occasional pre-solar diamonds
Reference: Huss, G. R., Meshik, A. P., Smith, J. B. & Hohenberg, C. M. (2003) Presolar diamond, silicon carbide, and graphite in carbonaceous chondrites: Implications for thermal processing in the solar nebula . Geochimica et Cosmochimica Acta 67 (24): 4823-4848. (Dec 2003)
Diopside
Formula: CaMgSi2O6
Reference: American Mineralogist, Volume 94, pages 1483–1486, 2009; Martin R. Lee & Richard C. Greenwood (1994). Alteration of calcium-and aluminium-rich inclusions in the Murray (CM2) carbonaceous chondrite. Meteoritics (ISSN 0026-1114), #29, no. 6, p. 780-790. (Dec 1994).
Enstatite
Formula: MgSiO3
Reference: Palmer, E.E. & Lauretta, D.S. (Oct 2011) Aqueous alteration of kamacite in CM chondrites: Meteoritics & Planetary Science: 46 (10): 1587-1607 (Oct 2011)
Eskolaite
Formula: Cr2O3
Reference: Palmer, E.E. & Lauretta, D.S. (Oct 2011) Aqueous alteration of kamacite in CM chondrites: Meteoritics & Planetary Science: 46 (10): 1587-1607 (Oct 2011)
'Fayalite-Forsterite Series'
Reference: J. Douglas MacDougall & B. K. Kothari (1976). Formation chronology for C2 meteorites. Earth and Planetary Science Letters, vol. 33, p. 36-44. (Nov. 1976)
Forsterite
Formula: Mg2SiO4
Reference: Martin R. Lee & Richard C. Greenwood (1994). Alteration of calcium- and aluminum-rich inclusions in the Murray (CM2) carbonaceous chondrite. Meteoritics 29, #6, 780-790.; Palmer, E.E. & Lauretta, D.S. (Oct 2011) Aqueous alteration of kamacite in CM chondrites: Meteoritics & Planetary Science: 46 (10): 1587-1607 (Oct 2011)
Graphite
Formula: C
Reference: Huss, G. R., Meshik, A. P., Smith, J. B. & Hohenberg, C. M. (2003) Presolar diamond, silicon carbide, and graphite in carbonaceous chondrites: Implications for thermal processing in the solar nebula . Geochimica et Cosmochimica Acta 67 (24): 4823-4848. (Dec 2003)
Hibonite
Formula: (Ca,Ce)(Al,Ti,Mg)12O19
Reference: American Mineralogist, Volume 94, pages 1483–1486, 2009; Phinney, D., MacDougall, J. D., & Whitehead, B. (1979). Magnesium Isotopes in Hibonite-Bearing Inclusions from CM Meteorites (Abstract). LUNAR AND PLANETARY SCIENCE X, P. 975-977.
Iron
Formula: Fe
Reference: Paul Ramdohr (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages. ; Palmer, E.E. & Lauretta, D.S. (Oct 2011) Aqueous alteration of kamacite in CM chondrites: Meteoritics & Planetary Science: 46 (10): 1587-1607 (Oct 2011)
Iron var: Kamacite
Formula: (Fe,Ni)
Reference: Paul Ramdohr (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages. ; Palmer, E.E. & Lauretta, D.S. (Oct 2011) Aqueous alteration of kamacite in CM chondrites: Meteoritics & Planetary Science: 46 (10): 1587-1607 (Oct 2011)
Mackinawite
Formula: (Fe,Ni)9S8
Reference: Paul Ramdohr (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Paul Ramdohr (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages. ; Martin R. Lee & Rachael Ellen (2008). Aragonite in the Murray (CM2) carbonaceous chondrite: Implications for parent body compaction and aqueous alteration. Meteoritics & Planetary Science 43, #7, 1219-1231. (Oct 2008).; Palmer, E.E. & Lauretta, D.S. (Oct 2011) Aqueous alteration of kamacite in CM chondrites: Meteoritics & Planetary Science: 46 (10): 1587-1607 (Oct 2011)
Paragonite
Formula: NaAl2(AlSi3O10)(OH)2
Reference: Martin R. Lee & Richard C. Greenwood (1994). Alteration of calcium-and aluminium-rich inclusions in the Murray (CM2) carbonaceous chondrite. Meteoritics (ISSN 0026-1114), #29, no. 6, p. 780-790. (Dec 1994).
Pentlandite
Formula: (FexNiy)Σ9S8
Reference: Paul Ramdohr (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages. ; Palmer, E.E. & Lauretta, D.S. (Oct 2011) Aqueous alteration of kamacite in CM chondrites: Meteoritics & Planetary Science: 46 (10): 1587-1607 (Oct 2011)
Perovskite
Formula: CaTiO3
Reference: Martin R. Lee & Richard C. Greenwood (1994). Alteration of calcium-and aluminium-rich inclusions in the Murray (CM2) carbonaceous chondrite. Meteoritics (ISSN 0026-1114), #29, no. 6, p. 780-790. (Dec 1994).
'Pyroxene Group'
Description: Found in spinel-pyroxene inclusions
Reference: Brearley, A. J. & Jones, R. H. (1998): Chondritic Meteorites. In: Planetary Materials (Papike, J. J., Editor): Chapter 3, 398 pages. Mineralogical Society of America: Washington, DC, USA. (1998)
Pyrrhotite
Formula: Fe7S8
Reference: Emma S. Bullock, Kevin D. McKeegan, Matthieu Gounelle, Monica M. Grady & Sara S. Russell (2010 ). Sulfur isotopic composition of Fe-Ni sulfide grains in CI and CM carbonaceous chondrites. Meteoritics & Planetary Science 45, #5, 885–898. (May 2010).
Schreibersite
Formula: (Fe,Ni)3P
Reference: M. A. Nazarov, G. Kurat, F. Brandstaetter, T. Ntaflos, M. Chaussidon, and P. Hoppe (2009). Phosphorus-Bearing Sulfides and Their Associations in CM Chondrites. Petrology vol. 17, #2, 101-123.; Palmer, E.E. & Lauretta, D.S. (Oct 2011) Aqueous alteration of kamacite in CM chondrites: Meteoritics & Planetary Science: 46 (10): 1587-1607 (Oct 2011)
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Reference: Brian Harold Mason (1962). Meteorites. John Wiley and Sons, Inc.: New York and London. 274 pages.; Palmer, E.E. & Lauretta, D.S. (Oct 2011) Aqueous alteration of kamacite in CM chondrites: Meteoritics & Planetary Science: 46 (10): 1587-1607 (Oct 2011)
'Smectite Group'
Formula: A0.3D2-3[T4O10]Z2 · nH2O
Reference: Zolensky, M. E., Barrett, R. A., Kloeck, W., & Gooding, J. L. (1990). Abstracts of the Lunar and Planetary Science Conference, vol. 21, pp. 1383-1384. (1990)
Spinel
Formula: MgAl2O4
Description: Including a few pre-solar grains
Reference: Phinney, D., MacDougall, J. D., & Whitehead, B. (1979). Magnesium Isotopes in Hibonite-Bearing Inclusions from CM Meteorites (Abstract). LUNAR AND PLANETARY SCIENCE X, P. 975-977. ; Martin R. Lee & Richard C. Greenwood (1994). Alteration of calcium-and aluminium-rich inclusions in the Murray (CM2) carbonaceous chondrite. Meteoritics (ISSN 0026-1114), #29, no. 6, p. 780-790. (Dec 1994).;Zinner, E. et al. (2003). Presolar spinel grains from the Murray and Murchison carbonaceous chondrites. Geochimica et Cosmochimica Acta: 67(24): 5083-5095. (December, 2003).
Taenite
Formula: (Fe,Ni)
Reference: Paul Ramdohr (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
Tochilinite
Formula: Fe2+5-6(Mg,Fe2+)5S6(OH)10
Reference: Zolensky, M. E., Barrett, R. A., Kloeck, W., & Gooding, J. L. (1990). Abstracts of the Lunar and Planetary Science Conference, vol. 21, pp. 1383-1384. (1990) ; Palmer, E.E. & Lauretta, D.S. (Oct 2011) Aqueous alteration of kamacite in CM chondrites: Meteoritics & Planetary Science: 46 (10): 1587-1607 (Oct 2011)
Troilite
Formula: FeS
Reference: Paul Ramdohr (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages. ; Palmer, E.E. & Lauretta, D.S. (Oct 2011) Aqueous alteration of kamacite in CM chondrites: Meteoritics & Planetary Science: 46 (10): 1587-1607 (Oct 2011)
Tschermakite
Formula: ☐(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2
Reference: American Mineralogist, Volume 94, pages 1483–1486, 2009

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Barringerite'1.BD.10(Fe,Ni)2P
'Diamond'1.CB.10aC
Graphite1.CB.05aC
Iron1.AE.05Fe
var: Kamacite1.AE.05(Fe,Ni)
Schreibersite1.BD.05(Fe,Ni)3P
Taenite1.AE.10(Fe,Ni)
Group 2 - Sulphides and Sulfosalts
'Daubréelite'2.DA.05Fe2+Cr3+2S4
Mackinawite2.CC.25(Fe,Ni)9S8
Pentlandite2.BB.15(FexNiy)Σ9S8
Pyrrhotite2.CC.10Fe7S8
Tochilinite2.FD.35Fe2+5-6(Mg,Fe2+)5S6(OH)10
Troilite2.CC.10FeS
Group 4 - Oxides and Hydroxides
'Chromite'4.BB.05Fe2+Cr3+2O4
'Corundum'4.CB.05Al2O3
'Eskolaite'4.CB.05Cr2O3
Hibonite4.CC.45(Ca,Ce)(Al,Ti,Mg)12O19
Magnetite4.BB.05Fe2+Fe3+2O4
Perovskite4.CC.30CaTiO3
Spinel4.BB.05MgAl2O4
Group 5 - Nitrates and Carbonates
'Aragonite'5.AB.15CaCO3
'Calcite'5.AB.05CaCO3
Group 9 - Silicates
'Augite'9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
var: Fassaite9.DA.15(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
'Cronstedtite'9.ED.15Fe2+2Fe3+((Si,Fe3+)2O5)(OH)4
'Diopside'9.DA.15CaMgSi2O6
'Enstatite'9.DA.05MgSiO3
Forsterite9.AC.05Mg2SiO4
Paragonite9.EC.15NaAl2(AlSi3O10)(OH)2
Tschermakite9.DE.10☐(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2
Unclassified Minerals, Rocks, etc.
'CM2 chondrite meteorite'-
'Chlorite Group'-
'Clinopyroxene Subgroup'-
Fayalite-Forsterite Series-
Pyroxene Group-
Serpentine Subgroup-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Smectite Group-A0.3D2-3[T4O10]Z2 · nH2O

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Barringerite1.1.21.1(Fe,Ni)2P
Iron
var: Kamacite
1.1.11.1(Fe,Ni)
Schreibersite1.1.21.2(Fe,Ni)3P
Taenite1.1.11.2(Fe,Ni)
Semi-metals and non-metals
Diamond1.3.6.1C
Graphite1.3.6.2C
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 9:8
Mackinawite2.7.2.1(Fe,Ni)9S8
Pentlandite2.7.1.1(FexNiy)Σ9S8
AmXp, with m:p = 1:1
Pyrrhotite2.8.10.1Fe7S8
Troilite2.8.9.1FeS
AmBnXp, with (m+n):p = 3:4
Daubréelite2.10.1.11Fe2+Cr3+2S4
Hydroxysulfides and Hydrated Sulfides
Tochilinite2.14.2.1Fe2+5-6(Mg,Fe2+)5S6(OH)10
Group 4 - SIMPLE OXIDES
A2X3
Corundum4.3.1.1Al2O3
Eskolaite4.3.1.3Cr2O3
Perovskite4.3.3.1CaTiO3
Group 7 - MULTIPLE OXIDES
AB2X4
Chromite7.2.3.3Fe2+Cr3+2O4
Magnetite7.2.2.3Fe2+Fe3+2O4
Spinel7.2.1.1MgAl2O4
AB12X19
Hibonite7.4.1.1(Ca,Ce)(Al,Ti,Mg)12O19
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with all cations in octahedral [6] coordination
Forsterite51.3.1.2Mg2SiO4
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Augite65.1.3a.3(CaxMgyFez)(Mgy1Fez1)Si2O6
Diopside65.1.3a.1CaMgSi2O6
Enstatite65.1.2.1MgSiO3
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 1:1 layers
Cronstedtite71.1.4.7Fe2+2Fe3+((Si,Fe3+)2O5)(OH)4
Sheets of 6-membered rings with 2:1 layers
Paragonite71.2.2a.2NaAl2(AlSi3O10)(OH)2
Unclassified Minerals, Rocks, etc.
Aragonite-CaCO3
Augite
var: Fassaite
-(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
'CM2 chondrite meteorite'-
'Chlorite Group'-
'Clinopyroxene Subgroup'-
'Fayalite-Forsterite Series'-
Iron-Fe
'Pyroxene Group'-
'Serpentine Subgroup'-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
'Smectite Group'-A0.3D2-3[T4O10]Z2 · nH2O
Tschermakite-☐(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2

List of minerals for each chemical element

HHydrogen
H CronstedtiteFe22+Fe3+((Si,Fe3+)2O5)(OH)4
H ParagoniteNaAl2(AlSi3O10)(OH)2
H Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
H Smectite GroupA0.3D2-3[T4O10]Z2 · nH2O
H TochiliniteFe2+5-6(Mg,Fe2+)5S6(OH)10
H Tschermakite☐(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2
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 EnstatiteMgSiO3
O EskolaiteCr2O3
O Augite (var: Fassaite)(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
O ForsteriteMg2SiO4
O Hibonite(Ca,Ce)(Al,Ti,Mg)12O19
O MagnetiteFe2+Fe23+O4
O ParagoniteNaAl2(AlSi3O10)(OH)2
O PerovskiteCaTiO3
O Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
O Smectite GroupA0.3D2-3[T4O10]Z2 · nH2O
O SpinelMgAl2O4
O TochiliniteFe2+5-6(Mg,Fe2+)5S6(OH)10
O Tschermakite☐(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2
NaSodium
Na Augite (var: Fassaite)(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
Na ParagoniteNaAl2(AlSi3O10)(OH)2
MgMagnesium
Mg Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mg DiopsideCaMgSi2O6
Mg EnstatiteMgSiO3
Mg Augite (var: Fassaite)(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
Mg ForsteriteMg2SiO4
Mg Hibonite(Ca,Ce)(Al,Ti,Mg)12O19
Mg Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Mg SpinelMgAl2O4
Mg TochiliniteFe2+5-6(Mg,Fe2+)5S6(OH)10
Mg Tschermakite☐(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2
AlAluminium
Al CorundumAl2O3
Al Augite (var: Fassaite)(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
Al Hibonite(Ca,Ce)(Al,Ti,Mg)12O19
Al ParagoniteNaAl2(AlSi3O10)(OH)2
Al Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Al SpinelMgAl2O4
Al Tschermakite☐(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2
SiSilicon
Si Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Si CronstedtiteFe22+Fe3+((Si,Fe3+)2O5)(OH)4
Si DiopsideCaMgSi2O6
Si EnstatiteMgSiO3
Si Augite (var: Fassaite)(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
Si ForsteriteMg2SiO4
Si ParagoniteNaAl2(AlSi3O10)(OH)2
Si Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Si Tschermakite☐(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2
PPhosphorus
P Barringerite(Fe,Ni)2P
P Schreibersite(Fe,Ni)3P
SSulfur
S DaubréeliteFe2+Cr23+S4
S Mackinawite(Fe,Ni)9S8
S Pentlandite(FexNiy)Σ9S8
S PyrrhotiteFe7S8
S TochiliniteFe2+5-6(Mg,Fe2+)5S6(OH)10
S TroiliteFeS
CaCalcium
Ca AragoniteCaCO3
Ca Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Ca CalciteCaCO3
Ca DiopsideCaMgSi2O6
Ca Augite (var: Fassaite)(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
Ca Hibonite(Ca,Ce)(Al,Ti,Mg)12O19
Ca PerovskiteCaTiO3
Ca Tschermakite☐(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2
TiTitanium
Ti Augite (var: Fassaite)(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
Ti Hibonite(Ca,Ce)(Al,Ti,Mg)12O19
Ti PerovskiteCaTiO3
CrChromium
Cr ChromiteFe2+Cr23+O4
Cr DaubréeliteFe2+Cr23+S4
Cr EskolaiteCr2O3
MnManganese
Mn Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
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 Augite (var: Fassaite)(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
Fe IronFe
Fe Iron (var: Kamacite)(Fe,Ni)
Fe Mackinawite(Fe,Ni)9S8
Fe MagnetiteFe2+Fe23+O4
Fe Pentlandite(FexNiy)Σ9S8
Fe PyrrhotiteFe7S8
Fe Schreibersite(Fe,Ni)3P
Fe Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Fe Taenite(Fe,Ni)
Fe TochiliniteFe2+5-6(Mg,Fe2+)5S6(OH)10
Fe TroiliteFeS
NiNickel
Ni Barringerite(Fe,Ni)2P
Ni Iron (var: Kamacite)(Fe,Ni)
Ni Mackinawite(Fe,Ni)9S8
Ni Pentlandite(FexNiy)Σ9S8
Ni Schreibersite(Fe,Ni)3P
Ni Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Ni Taenite(Fe,Ni)
ZnZinc
Zn Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
CeCerium
Ce Hibonite(Ca,Ce)(Al,Ti,Mg)12O19

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Tertiary - Cretaceous
2.588 - 145 Ma



ID: 2799136
Clayton and McNairy Formations, undivided

Age: Phanerozoic (2.588 - 145 Ma)

Stratigraphic Name: Clayton Formation; McNairy Formation

Description: in Jackson Purchase, combined thickness ranges from 40-85 m

Comments: Original map source: In 2002, the 1:500,000 scale geologic map (including a separate fault file) was digitized by the Kentucky Geological Survey and made available to the public through the website http://www.uky.edu/KGS/gis/kygeol.htm. In 2004 the USGS re-digitized the exi

Lithology: Major:{sandstone,shale}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Late Cretaceous
66 - 100.5 Ma



ID: 1879430
McNairy Formation

Age: Late Cretaceous (66 - 100.5 Ma)

Stratigraphic Name: McNairy Formation

Description: Sand, clay, and gravel: Sand, reddish-tan, very light tan, and very light gray; very fine to medium grains, locally fine to coarse grains, angular to rounded, predominantly quartz; contains minor amounts of chert and minor but locally abundant heavy minerals, generally micaceous, locally silty; locally contains thin stringers of well rounded chert pebbles. Sand, thin-bedded, locally crossbedded; commonly with scour-and-fill structure; locally cemented with iron oxide. Clay, very light gray and light-yellowish-gray; occurs in sand as small tabular fragments along bedding planes and as small tubes up to 1 inch in diameter identified as Halymenites major (Lesquereux). Clay, very dark gray and greenish-gray, silty; less commonly sandy; commonly contains marcasite(?) concretions; commonly occurs between sand described above and underlying limestone residuum. Samples of very dark gray silty clay from a fossil locality on Grindstone Creek and from auger holes labeled Km 373, Km 394, and Km 348 (USGS Paleobotanical Locality numbers D3330, D3329, and D3328) in the western and southwestern part of the quadrangle were examined for plant microfossils and were interpreted by R. H. Tschudy (written communication, 1964) to be of McNairy age. Gravel, tan and gray, sandy and silty; composed of angular to rounded granules, pebbles, and cobbles of chert; occurs locally at base of sand and as lenses within the sand. Thickness in part based on drill-hole information.

Comments: Km; Hamlin Quadrangle (GQ-498) | http://kgs.uky.edu/kgsweb/PubsSearching/MoreInfo.asp?titleInput=718 | Map description and column: http://kgs.uky.edu/kgsmap/kgsgeoserver/geolDescID.asp?idType=pointID&fmcode=211MCNR&gq_num=498&map_level=24K

Lithology: Sand | clay | gravel

Reference: KGS Databases, Maps, and Publications. Kentucky 1:24,000 Geologic Map. Kentucky Geological Survey. [22]

Paleozoic
251.902 - 541 Ma



ID: 3187973
Paleozoic sedimentary rocks

Age: Phanerozoic (251.902 - 541 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Horan, J.R. (May 1953) The Murray, Calloway County, Kentucky, Aerolite. Meteoritics: 1(1): 114-121.
Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
MacDougall, J.D. and Kothari, B.K. (November 1976) Formation chronology for C2 meteorites. Earth and Planetary Science Letters: 33: 36-44.
Phinney, D., MacDougall, J.D., and Whitehead, B. (1979) Magnesium Isotopes in Hibonite-Bearing Inclusions from CM Meteorites (Abstract). Lunar and Planetary Science X: 975-977.
Bernatowicz, T., Fraundorf, G., Tang, M., Anders, E., Wopenka, B., Zinner, E., and Fraundorf, P. (1987) Evidence for interstellar SiC in the Murray carbonaceous meteorite. Nature: 330: 728–730.
Zinner, E., Tang, M., and Anders, E. (1989) Interstellar SiC in the Murchison and Murray meteorites: Isotopic composition of Ne, Xe, Si, C and N. Geochimica et Cosmochimica Acta: 53: 3273–3290.
Grady, M.M. (2000) Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge, New York, Oakleigh, Madrid, Cape Town. 690 pages.
Huss, G.R., Meshik, A.P., Smith, J.B., and Hohenberg, C.M. (December 2003) Presolar diamond, silicon carbide, and graphite in carbonaceous chondrites: Implications for thermal processing in the solar nebula. Geochimica et Cosmochimica Acta 67 (24): 4823-4848.
Zinner, E., Amari, S., Guinness, R., Nguyen, A., Stadermann, F.J., Walker, R.M., and Lewis, R.S. (December 2003) Presolar spinel grains from the Murray and Murchison carbonaceous chondrites. Geochimica et Cosmochimica Acta: 67(24) [special issue]: 5083-5095.
Lee, M.R. & Ellen, R. (October 2008) Aragonite in the Murray (CM2) carbonaceous chondrite: Implications for parent body compaction and aqueous alteration. Meteoritics & Planetary Science: 43(7): 1219-1231.
American Mineralogist (2009) 94: 1483–1486.
Palmer, E.E. and Lauretta, D.S. (October 2011) Aqueous alteration of kamacite in CM chondrites: Meteoritics & Planetary Science: 46 (10): 1587-1607.

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