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Alfianello meteorite, Alfianello, Brescia Province, Lombardy, Italy

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Latitude & Longitude (WGS84): 45° 16' 0'' North , 10° 8' 60'' East
Latitude & Longitude (decimal): 45.26667,10.15000
GeoHash:G#: u0p1wbx12
Locality type:Meteorite Fall Location
Meteorite Class:L6 chondrite meteorite
Meteoritical Society Class:L6
Metbull:View entry in Meteoritical Bulletin Database
Köppen climate type:Cfa : Humid subtropical climate
Name(s) in local language(s):Meteorite di Alfianello, Alfianello, provincia di Brescia, Lombardia, Italia


Ordinary chondrite, veined (L6, S5, W0)
Fell, 16 February 1883; 228 kg
Italy's most massive meteorite fall

After detonations were heard a single large stone fell to the earth penetrating the soil to a depth of ~ 1m. The stone, which fell entire, was broken into pieces by the farmer who owned the land. Silicates, mostly equilibrated olivine (Fa24) and orthopyroxene (Fs22), occupy nearly 90% of the meteorite. Chondrules are very poorly defined. Fe-Ni metal (mostly kamacite) and troilite are the most important accessory phases. The Fe-Ni metal is disseminated in very small grains. Chromite and other minor opaques are also present. Planar deformation of olivine and conversion of plagioclase into maskelynite are two of several indicators of strong preterrestrial shock (stage S5). A cosmic ray exposure age of ~28.0 MA is reported.

Alfianello is one of 269 meteorite falls classified exactly as an L6 chondrite at The Meteoritical Bulletin Database (January 2016). After recovery, the main mass was sliced and distributed widely. Masses in the 4-10 kg range are still held by several museums.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


9 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:

'Albite-Anorthite Series'
Reference: Levi-Donati, G. R. (1971) Petrological Features of Shock Metamorphism in Chondrites: Alfianello. Meteoritics 6(4): 225-235.
'Apatite'
Reference: Mold, P., Bull, R.K. & Durrani, S.A. (1982) Plutonium-244 concentrations in chondritic phosphates and their significance in fission-tracks dating of meteorites. pp. 851-854.
Chromite
Formula: Fe2+Cr3+2O4
Reference: Levi-Donati, G. R. (1971) Petrological Features of Shock Metamorphism in Chondrites: Alfianello. Meteoritics 6(4): 225-235.; Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
Copper
Formula: Cu
Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
'Fayalite-Forsterite Series'
Reference: Flight, W. (1883) Examination of the Meteorite Which Fell on the 16th February, 1883, at Alfianello, in the District of Verolannova, in the Province of Brescia, Italy: Proceedings of the Royal Society of London 35: 258-260; Keil, K. & Fredriksson, K. (1964) The Fe.Mg and Ca Distribution in Coexisting Olivines and Rhombic Pyroxenes of Chondrites. Journal of Geophysical Research Atmospheres 69 (16): 3487-3515. (August 1964). ; Levi-Donati, G. R. (1971) Petrological Features of Shock Metamorphism in Chondrites: Alfianello. Meteoritics 6(4): 225-235.
Ilmenite
Formula: Fe2+TiO3
Reference: Levi-Donati, G. R. (1971) Petrological Features of Shock Metamorphism in Chondrites: Alfianello. Meteoritics 6(4): 225-235.; Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
Iron
Formula: Fe
Reference: - Comptes rendus hebdomadaires des séances de l'Académie des sciences, vol. 96, 1883
Iron var: Kamacite
Formula: (Fe,Ni)
Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
'L6 chondrite meteorite'
Reference: Meteoritical Society Database
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
'Maskelynite'
Reference: Levi-Donati, G. R. (1971) Petrological Features of Shock Metamorphism in Chondrites: Alfianello. Meteoritics 6(4): 225-235.
Merrillite
Formula: Ca9NaMg(PO4)7
Reference: Levi-Donati, G. R. (1971) Petrological Features of Shock Metamorphism in Chondrites: Alfianello. Meteoritics 6(4): 225-235.
'Orthopyroxene Subgroup'
Reference: Keil, K. & Fredriksson, K. (1964) The Fe.Mg and Ca Distribution in Coexisting Olivines and Rhombic Pyroxenes of Chondrites. Journal of Geophysical Research Atmospheres 69 (16): 3487-3515. (August 1964). ; Levi-Donati, G. R. (1971) Petrological Features of Shock Metamorphism in Chondrites: Alfianello. Meteoritics 6(4): 225-235.
'Plessite'
Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
'Pyroxene Group'
Reference: - Comptes rendus hebdomadaires des séances de l'Académie des sciences, vol. 96, 1883
Taenite
Formula: (Fe,Ni)
Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
Tetrataenite
Formula: FeNi
Reference: Scorzelli, R.B. & 4 others (1992). Iron-nickel superstructure in metal particles of Alfianello meteorite. Hyperfine Interactions 83(1): 479-482. (Dec 1992).
Troilite
Formula: FeS
Reference: Flight, W. (1883) Examination of the Meteorite Which Fell on the 16th February, 1883, at Alfianello, in the District of Verolannova, in the Province of Brescia, Italy: Proceedings of the Royal Society of London 35: 258-260; Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Copper'1.AA.05Cu
'Iron'1.AE.05Fe
var: Kamacite1.AE.05(Fe,Ni)
Taenite1.AE.10(Fe,Ni)
Tetrataenite1.AE.10FeNi
Group 2 - Sulphides and Sulfosalts
Troilite2.CC.10FeS
Group 4 - Oxides and Hydroxides
'Chromite'4.BB.05Fe2+Cr3+2O4
'Ilmenite'4.CB.05Fe2+TiO3
Magnetite4.BB.05Fe2+Fe3+2O4
Group 8 - Phosphates, Arsenates and Vanadates
Merrillite8.AC.45Ca9NaMg(PO4)7
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Apatite'-
'Fayalite-Forsterite Series'-
L6 chondrite meteorite-
Maskelynite-
Orthopyroxene Subgroup-
Plessite-
Pyroxene Group-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Copper1.1.1.3Cu
Iron
var: Kamacite
1.1.11.1(Fe,Ni)
Taenite1.1.11.2(Fe,Ni)
Tetrataenite1.1.11.3FeNi
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Troilite2.8.9.1FeS
Group 4 - SIMPLE OXIDES
A2X3
Ilmenite4.3.5.1Fe2+TiO3
Group 7 - MULTIPLE OXIDES
AB2X4
Chromite7.2.3.3Fe2+Cr3+2O4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 38 - ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
(AB)3(XO4)2
Merrillite38.3.4.4Ca9NaMg(PO4)7
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Apatite'-
'Fayalite-Forsterite Series'-
Iron-Fe
'L6 chondrite meteorite'-
'Maskelynite'-
'Orthopyroxene Subgroup'-
'Plessite'-
'Pyroxene Group'-

List of minerals for each chemical element

OOxygen
O ChromiteFe2+Cr23+O4
O IlmeniteFe2+TiO3
O MagnetiteFe2+Fe23+O4
O MerrilliteCa9NaMg(PO4)7
NaSodium
Na MerrilliteCa9NaMg(PO4)7
MgMagnesium
Mg MerrilliteCa9NaMg(PO4)7
PPhosphorus
P MerrilliteCa9NaMg(PO4)7
SSulfur
S TroiliteFeS
CaCalcium
Ca MerrilliteCa9NaMg(PO4)7
TiTitanium
Ti IlmeniteFe2+TiO3
CrChromium
Cr ChromiteFe2+Cr23+O4
FeIron
Fe ChromiteFe2+Cr23+O4
Fe IlmeniteFe2+TiO3
Fe IronFe
Fe Iron (var: Kamacite)(Fe,Ni)
Fe MagnetiteFe2+Fe23+O4
Fe Taenite(Fe,Ni)
Fe TetrataeniteFeNi
Fe TroiliteFeS
NiNickel
Ni Iron (var: Kamacite)(Fe,Ni)
Ni Taenite(Fe,Ni)
Ni TetrataeniteFeNi
CuCopper
Cu CopperCu

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

Neogene
2.588 - 23.03 Ma



ID: 3185031
Cenozoic sedimentary rocks

Age: Neogene (2.588 - 23.03 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]

Pliocene
2.588 - 5.333 Ma



ID: 3152889
Pliocene clay

Age: Pliocene (2.588 - 5.333 Ma)

Lithology: Major:{clay}, Minor{sand,conglomerate,limestone}

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]

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)
---. Comptes rendus hebdomadaires des séances de l'Académie des sciences, vol. 96, 1883.
Flight, W. (1883) Examination of the Meteorite Which Fell on the 16th February, 1883, at Alfianello, in the District of Verolannova, in the Province of Brescia, Italy: Proceedings of the Royal Society of London 35: 258-260.
Keil, K. & Fredriksson, K. (1964) The Fe.Mg and Ca Distribution in Coexisting Olivines and Rhombic Pyroxenes of Chondrites. Journal of Geophysical Research Atmospheres 69 (16): 3487-3515. (August 1964).
Levi-Donati, G. R. (1971) Petrological Features of Shock Metamorphism in Chondrites: Alfianello: Meteoritics 6( 4): 225-235. (Dec 1971) .
Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
Mold, P., Bull, R.K. & Durrani, S.A. (1982) Plutonium-244 concentrations in chondritic phosphates and their significance in fission-tracks dating of meteorites. pp. 851-854.
Scorzelli, R.B. & 4 others (1992) Iron-nickel superstructure in metal particles of Alfianello meteorite: Hyperfine Interactions 83(1): 479-482. (Dec 1992).
Scorzelli, R. B., Azevedo, I., Souza; Ortalli, I.; Pedrazzi, G.; Bonazzi, A. (1994) "Fe-Ni phases in the Alfianello meteorite", Meteoritics (ISSN 0026-1114), vol. 29, no. 4, p. 530. (July 1994).
Grady, M.M. (2000) Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge; New York; Oakleigh; Madrid; Cape Town. 689 pages.
Chinellato, M. (2001) Two Brescian Meteorites: Trenzano & Alfianello: Meteorite, Vol. 7, pp. 38-40. (2001).
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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