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Umbarger meteorite, Randall Co., Texas, USAi
Regional Level Types
Umbarger meteoriteMeteorite Fall Location
Randall Co.County
TexasState
USACountry

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Key
Latitude & Longitude (WGS84):
34° 57' 0'' North , 102° 7' 3'' West
Latitude & Longitude (decimal):
Meteorite Class:
Meteoritical Society Class:
Nearest Settlements:
PlacePopulationDistance
Canyon14,887 (2017)18.4km
Bushland1,500 (2010)27.3km
Timbercreek Canyon445 (2017)29.6km
Hereford15,021 (2017)29.7km
Palisades335 (2017)31.3km


Ordinary chondrite, veined (L6)
Found, 1954; 13 kg

An unusual L chondrite with shock-induced melt veins. Unusually high pressure phases include ahrensite, akimotoite, lingunite, stishovite, and ringwoodite.

Shock stage S4 to S6 due to transient shockwaves with instances of crystallization occurring at ~18 MPa.

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


10 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:

Ahrensite
Formula: SiFe2O4
Reference: Tomioka, N. & Miyahara, M. (2017) High-pressure minerals in shocked meteorites: Meteoritics & Planetary Science 52(9): 2017-2039. (Sept 2017).
Akimotoite
Formula: (Mg,Fe2+)SiO3
Description: In melt vein.
Reference: Zhidong Xie et al. , Lunar and Planetary Science XXXVI (2005), 1216.pdf; Tomioka, N. & Miyahara, M. (2017) High-pressure minerals in shocked meteorites: Meteoritics & Planetary Science 52(9): 2017-2039. (Sept 2017).
'Albite-Anorthite Series'
Description: Hollandite-structured plagioclase.
Reference: Z. Xie and T.G. Sharp, Eos Trans. AGU, 83(47), Fall Meet. Suppl., Abstract xxxxx-xx, 2002
Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Reference: Z. Xie and T.G. Sharp, Eos Trans. AGU, 83(47), Fall Meet. Suppl., Abstract xxxxx-xx, 2002
'Clinopyroxene Subgroup'
Description: Low Ca and Ca-rich clinopyroxenes.
Reference: Zhidong Xie et al. , Lunar and Planetary Science XXXVI (2005), 1216.pdf
Enstatite
Formula: MgSiO3
Reference: Zhidong Xie et al. , Lunar and Planetary Science XXXI, 2065.pdf
Fayalite
Formula: Fe2+2SiO4
Reference: Zhidong Xie et al. , Lunar and Planetary Science XXXVI (2005), 1216.pdf
'Glass'
Reference: Zhidong Xie et al. , Lunar and Planetary Science XXXVI (2005), 1216.pdf
Lingunite
Formula: (Na,Ca)AlSi3O8
Reference: Tomioka, N. & Miyahara, M. (2017) High-pressure minerals in shocked meteorites: Meteoritics & Planetary Science 52(9): 2017-2039. (Sept 2017).
Majorite
Formula: Mg3(Fe2+,Si,Al)2(SiO4)3
Reference: Zhidong Xie et al. , Lunar and Planetary Science XXXI, 2065.pdf
'Maskelynite'
Reference: Zhidong Xie et al. , Lunar and Planetary Science XXXI, 2065.pdf
Ringwoodite
Formula: (Mg,Fe2+)2SiO4
Description: In melt vein.
Reference: Zhidong Xie et al. , Lunar and Planetary Science XXXVI (2005), 1216.pdf; Tomioka, N. & Miyahara, M. (2017) High-pressure minerals in shocked meteorites: Meteoritics & Planetary Science 52(9): 2017-2039. (Sept 2017).
Spinel
Formula: MgAl2O4
Description: Fe2SiO4-spinel. In melt-vein.
Reference: Zhidong Xie et al. , Lunar and Planetary Science XXXVI (2005), 1216.pdf
Stishovite
Formula: SiO2
Description: In melt-vein.
Reference: Zhidong Xie et al. , Lunar and Planetary Science XXXVI (2005), 1216.pdf; Tomioka, N. & Miyahara, M. (2017) High-pressure minerals in shocked meteorites: Meteoritics & Planetary Science 52(9): 2017-2039. (Sept 2017).

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Akimotoite4.CB.05(Mg,Fe2+)SiO3
Spinel4.BB.05MgAl2O4
Stishovite4.DA.40SiO2
Group 9 - Silicates
Ahrensite9.AC.SiFe2O4
Augite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
Enstatite9.DA.05MgSiO3
Fayalite9.AC.05Fe2+2SiO4
Lingunite9.FA.70(Na,Ca)AlSi3O8
Majorite9.AD.25Mg3(Fe2+,Si,Al)2(SiO4)3
Ringwoodite9.AC.15(Mg,Fe2+)2SiO4
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Clinopyroxene Subgroup'-
'Glass'-
'Maskelynite'-

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
AX2
Stishovite4.4.1.9SiO2
Group 7 - MULTIPLE OXIDES
AB2X4
Spinel7.2.1.1MgAl2O4
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with all cations in octahedral [6] coordination
Fayalite51.3.1.1Fe2+2SiO4
Ringwoodite51.3.3.1(Mg,Fe2+)2SiO4
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Majorite51.4.3a.5Mg3(Fe2+,Si,Al)2(SiO4)3
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
Enstatite65.1.2.1MgSiO3
Unclassified Minerals, Mixtures, etc.
Ahrensite-SiFe2O4
Akimotoite-(Mg,Fe2+)SiO3
'Albite-Anorthite Series'-
'Clinopyroxene Subgroup'-
'Glass'-
Lingunite-(Na,Ca)AlSi3O8
'Maskelynite'-

List of minerals for each chemical element

OOxygen
O Ringwoodite(Mg,Fe2+)2SiO4
O Akimotoite(Mg,Fe2+)SiO3
O SpinelMgAl2O4
O FayaliteFe22+SiO4
O StishoviteSiO2
O MajoriteMg3(Fe2+,Si,Al)2(SiO4)3
O EnstatiteMgSiO3
O Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
O AhrensiteSiFe2O4
O Lingunite(Na,Ca)AlSi3O8
NaSodium
Na Lingunite(Na,Ca)AlSi3O8
MgMagnesium
Mg Ringwoodite(Mg,Fe2+)2SiO4
Mg Akimotoite(Mg,Fe2+)SiO3
Mg SpinelMgAl2O4
Mg MajoriteMg3(Fe2+,Si,Al)2(SiO4)3
Mg EnstatiteMgSiO3
Mg Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
AlAluminium
Al SpinelMgAl2O4
Al Lingunite(Na,Ca)AlSi3O8
SiSilicon
Si Ringwoodite(Mg,Fe2+)2SiO4
Si Akimotoite(Mg,Fe2+)SiO3
Si FayaliteFe22+SiO4
Si StishoviteSiO2
Si MajoriteMg3(Fe2+,Si,Al)2(SiO4)3
Si EnstatiteMgSiO3
Si Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Si AhrensiteSiFe2O4
Si Lingunite(Na,Ca)AlSi3O8
CaCalcium
Ca Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Ca Lingunite(Na,Ca)AlSi3O8
FeIron
Fe Ringwoodite(Mg,Fe2+)2SiO4
Fe FayaliteFe22+SiO4
Fe Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Fe AhrensiteSiFe2O4

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Grady, M.M. (2000). Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge; New York; Oakleigh; Madrid; Cape Town. 689 pages.
Tomioka, N. & Miyahara, M. (2017) High-pressure minerals in shocked meteorites: Meteoritics & Planetary Science 52(9): 2017-2039. (Sept 2017).

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