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Boriskino Meteorite, Orenburgskaya Oblast, Southern Urals, Urals Region, Russia

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Latitude & Longitude (WGS84): 54° 13' 59'' North , 52° 28' 59'' East
Latitude & Longitude (decimal): 54.23333,52.48333
GeoHash:G#: v1tkd2chn
Locality type:Meteorite Fall Location
Meteorite Class:CM2 chondrite meteorite
Meteoritical Society Class:CM2
Metbull:View entry in Meteoritical Bulletin Database
Köppen climate type:Dfb : Warm-summer humid continental climate


Carbonaceous Chondrite, Mighei-like (CM2)
Fall of 20 April 1930; 1.342 kg

After the meteorite fell in the early afternoon near the village of Staroe Boriskino, two stones were eventually recovered while three were lost. Boriskino and other CM chondrites are distinguished by small chondrules and inclusions, hydrated minerals, and abundant fine-grained matrix. All 15 Mighei-like CM chondrite falls have been assigned to petrologic CM2 type and are additionally characterized by their Ni-bearing sulfides. During the first four decades after the Boriskino fall, Boriskino’s phyllosilicates could not be mineralogically characterized with the instruments of the day. During the past four decades, mineralogical research interest has largely been focused on more specific issues involving inclusions, small aggregates, and pre-solar phases. Thus we know, for example, that Boriskino has small presolar nanodiamonds. Recent literature published in the English language, however, has precious few references to Boriskino’s (presumably complex) pyroxenes and phyllosilicates.

Regions containing this locality

Soviet Union (1922-1991)

Country (Former) - 3,734 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


12 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:

Barringerite
Formula: (Fe,Ni)2P
Reference: Nazarov, M. A., Brandstaetter, F. & Kurat, G. (1999). Phosphorian Sulfides from Banten and Boriskino CM Chondrites (abs). Annual Lunar and Planetary Science Conference XXX: Houston, TX, abstract no. 1260. (March 1999)
Calcite
Formula: CaCO3
Reference: Mason, B. H. (1962) Meteorites. John Wiley and Sons, Inc.: New York and London.; McSween et al., (1993) Trace-Element Concentrations in Calcite and Dolomite from Carbonaceous Chondrites Determined by Ion Microprobe, and Coexisting Fluid Compositions. Meteoritics 28 (3): 396. (July 1993)
'Chlorite Group'
Reference: Wiik, 0. B., 1956. The chemical composition of some stony meteorites. Geochim. Cosmochim. Acta 9, 279-289.
Chromite
Formula: Fe2+Cr3+2O4
Reference: Grady, M. M. (2000). Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge; New York; Oakleigh; Madrid; Cape Town. 689 pages.
'CM2 chondrite meteorite'
Reference: Meteoritical Society Database
Diamond
Formula: C
Description: Includes a presolar component; Such unusually small diamonds are frequently referred to as 'nanodiamonds' as their largest dimensions are almost invariably much less than a micrometer.
Reference: Verchovsky et al., (1999) Presolar Diamonds from Efremovka & Boriskino: C, N and Noble Gas Isotopes in Grain Size Fractions and Implications for the Origin of Diamonds (abs). Annual Lunar and Planetary Science Conference XXX: Houston, TX, abstract no. 1746. (March 1999)
Dolomite
Formula: CaMg(CO3)2
Reference: McSween et al., (1993) Trace-Element Concentrations in Calcite and Dolomite from Carbonaceous Chondrites Determined by Ion Microprobe, and Coexisting Fluid Compositions. Meteoritics 28 (3): 396. (July 1993)
'Fayalite-Forsterite Series'
Reference: Boctor et al., (2002) Sulfide Mineral Assemblages in Boriskino CM Chondrite (abs). Annual Lunar and Planetary Science Conference XXXIII: Houston, Texas, abstract no. 1534. (March 2002)
Forsterite
Formula: Mg2SiO4
Reference: Grady, M. M. (2000). Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge; New York; Oakleigh; Madrid; Cape Town. 689 pages.
Mackinawite
Formula: (Fe,Ni)9S8
Reference: Boctor et al., (2002) Sulfide Mineral Assemblages in Boriskino CM Chondrite (abs). Annual Lunar and Planetary Science Conference XXXIII: Houston, Texas, abstract no. 1534. (March 2002)
Magnesite
Formula: MgCO3
Reference: Mason, B. H. (1962) Meteorites. John Wiley and Sons, Inc.: New York and London.
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Boctor et al., (2002) Sulfide Mineral Assemblages in Boriskino CM Chondrite (abs). Annual Lunar and Planetary Science Conference XXXIII: Houston, Texas, abstract no. 1534. (March 2002)
Pentlandite
Formula: (FexNiy)Σ9S8
Description: minor sulfide
Reference: Boctor et al., (2002) Sulfide Mineral Assemblages in Boriskino CM Chondrite (abs). Annual Lunar and Planetary Science Conference XXXIII: Houston, Texas, abstract no. 1534. (March 2002); Nazarov, M. A., Brandstaetter, F. & Kurat, G. (1999). Phosphorian Sulfides from Banten and Boriskino CM Chondrites (abs). Annual Lunar and Planetary Science Conference XXX: Houston, TX, abstract no. 1260. (March 1999)
'Pyroxene Group'
Reference: Boctor et al., (2002) Sulfide Mineral Assemblages in Boriskino CM Chondrite (abs). Annual Lunar and Planetary Science Conference XXXIII: Houston, Texas, abstract no. 1534. (March 2002)
Pyrrhotite
Formula: Fe7S8
Reference: Boctor et al., (2002) Sulfide Mineral Assemblages in Boriskino CM Chondrite (abs). Annual Lunar and Planetary Science Conference XXXIII: Houston, Texas, abstract no. 1534. (March 2002); Nazarov, M. A., Brandstaetter, F. & Kurat, G. (1999). Phosphorian Sulfides from Banten and Boriskino CM Chondrites (abs). Annual Lunar and Planetary Science Conference XXX: Houston, TX, abstract no. 1260. (March 1999)
Schreibersite
Formula: (Fe,Ni)3P
Description: sparse
Reference: Nazarov, M. A., Brandstaetter, F. & Kurat, G. (1999). Phosphorian Sulfides from Banten and Boriskino CM Chondrites (abs). Annual Lunar and Planetary Science Conference XXX: Houston, TX, abstract no. 1260. (March 1999)

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Barringerite'1.BD.10(Fe,Ni)2P
'Diamond'1.CB.10aC
'Schreibersite'1.BD.05(Fe,Ni)3P
Group 2 - Sulphides and Sulfosalts
'Mackinawite'2.CC.25(Fe,Ni)9S8
'Pentlandite'2.BB.15(FexNiy)Σ9S8
'Pyrrhotite'2.CC.10Fe7S8
Group 4 - Oxides and Hydroxides
'Chromite'4.BB.05Fe2+Cr3+2O4
'Magnetite'4.BB.05Fe2+Fe3+2O4
Group 5 - Nitrates and Carbonates
'Calcite'5.AB.05CaCO3
'Dolomite'5.AB.10CaMg(CO3)2
'Magnesite'5.AB.05MgCO3
Group 9 - Silicates
'Forsterite'9.AC.05Mg2SiO4
Unclassified Minerals, Rocks, etc.
'CM2 chondrite meteorite'-
'Chlorite Group'-
'Fayalite-Forsterite Series'-
'Pyroxene Group'-

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
Schreibersite1.1.21.2(Fe,Ni)3P
Semi-metals and non-metals
Diamond1.3.6.1C
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
Group 7 - MULTIPLE OXIDES
AB2X4
Chromite7.2.3.3Fe2+Cr3+2O4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Magnesite14.1.1.2MgCO3
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with all cations in octahedral [6] coordination
Forsterite51.3.1.2Mg2SiO4
Unclassified Minerals, Rocks, etc.
'CM2 chondrite meteorite'-
'Chlorite Group'-
'Fayalite-Forsterite Series'-
'Pyroxene Group'-

List of minerals for each chemical element

CCarbon
C CalciteCaCO3
C DiamondC
C DolomiteCaMg(CO3)2
C MagnesiteMgCO3
OOxygen
O CalciteCaCO3
O ChromiteFe2+Cr23+O4
O DolomiteCaMg(CO3)2
O ForsteriteMg2SiO4
O MagnesiteMgCO3
O MagnetiteFe2+Fe23+O4
MgMagnesium
Mg DolomiteCaMg(CO3)2
Mg ForsteriteMg2SiO4
Mg MagnesiteMgCO3
SiSilicon
Si ForsteriteMg2SiO4
PPhosphorus
P Barringerite(Fe,Ni)2P
P Schreibersite(Fe,Ni)3P
SSulfur
S Mackinawite(Fe,Ni)9S8
S Pentlandite(FexNiy)Σ9S8
S PyrrhotiteFe7S8
CaCalcium
Ca CalciteCaCO3
Ca DolomiteCaMg(CO3)2
CrChromium
Cr ChromiteFe2+Cr23+O4
FeIron
Fe Barringerite(Fe,Ni)2P
Fe ChromiteFe2+Cr23+O4
Fe Mackinawite(Fe,Ni)9S8
Fe MagnetiteFe2+Fe23+O4
Fe Pentlandite(FexNiy)Σ9S8
Fe PyrrhotiteFe7S8
Fe Schreibersite(Fe,Ni)3P
NiNickel
Ni Barringerite(Fe,Ni)2P
Ni Mackinawite(Fe,Ni)9S8
Ni Pentlandite(FexNiy)Σ9S8
Ni Schreibersite(Fe,Ni)3P

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

Late Permian
251.902 - 272.95 Ma



ID: 3137359
East European plate

Age: Phanerozoic (251.902 - 272.95 Ma)

Lithology: Major:{carbonates}, Minor{clay,sandstone}

Reference: Asch, K. The 1:5M International Geological Map of Europe and Adjacent Areas: Development and Implementation of a GIS-enabled Concept. Geologisches Jahrbuch, SA 3. [147]

Permian
251.902 - 298.9 Ma



ID: 3186311
Paleozoic sedimentary rocks

Age: Phanerozoic (251.902 - 298.9 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)
Wiik, 0. B., 1956. The chemical composition of some stony meteorites. Geochim. Cosmochim. Acta 9, 279-289.
Mason, B. H. (1962) Meteorites. John Wiley and Sons, Inc.: New York and London.
Mason, B. H. (1963). The Carbonaceous Chondrites. Space Science Reviews 1 (4): 621-646.
McSween et al., (1993) Trace-Element Concentrations in Calcite and Dolomite from Carbonaceous Chondrites Determined by Ion Microprobe, and Coexisting Fluid Compositions. Meteoritics 28 (3): 396. (July 1993)
Nazarov, M. A., Brandstaetter, F. & Kurat, G. (1999). Phosphorian Sulfides from Banten and Boriskino CM Chondrites (abs). Annual Lunar and Planetary Science Conference XXX: Houston, TX, abstract no. 1260. (March 1999)
Verchovsky et al., (1999) Presolar Diamonds from Efremovka & Boriskino: C, N and Noble Gas Isotopes in Grain Size Fractions and Implications for the Origin of Diamonds (abs). Annual Lunar and Planetary Science Conference XXX: Houston, TX, abstract no. 1746. (March 1999)
Grady, M. M. (2000). Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge, New York, Oakleigh, Madrid, Cape Town.
Boctor et al., (2002) Sulfide Mineral Assemblages in Boriskino CM Chondrite (abs). Annual Lunar and Planetary Science Conference XXXIII: Houston, Texas, abstract no.1534. (March 2002)

External Links

_Meteoritical Bulletin Database
http://www.lpi.usra.edu/meteor/metbull.php


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