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Siena meteorite, Lucignano d'Asso, Siena Province, Tuscany, Italyi
Regional Level Types
Siena meteoriteMeteorite Fall Location
Lucignano d'Asso- not defined -
Siena ProvinceProvince
TuscanyRegion
ItalyCountry

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Name(s) in local language(s):Meteorite di Siena, Lucignano d'Asso, provincia di Siena, Toscana, Italia
Latitude & Longitude (WGS84): 43° 7' North , 11° 36' East
Latitude & Longitude (decimal): 43.11667,11.60000
GeoHash:G#: sr8jrcnug
Locality type:Meteorite Fall Location
Meteorite Class:LL5 chondrite meteorite
Meteoritical Society Class:LL5
Metbull:View entry in Meteoritical Bulletin Database
Köppen climate type:Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
San Giovanni d'Asso329 (2017)4.2km
Torrenieri1,342 (2017)5.4km
Castelmuzio245 (2014)5.6km
Montisi298 (2017)5.9km
San Quirico d'Orcia2,467 (2014)6.6km


One of the first confirmed meteorite falls in Italy.

SIENA - Fall 16 June 1794, Siena, Tuscany Region, Italy.
Ordinary Chondrite, brecciated (LL5,br; S4; W0). Total mass 3.7 kg.

In the early evening a large number of stones fell after detonations and a fireball near small villages 47 km SE. of Siena. Most stones were lost, but ~ 3.7 kg in small stones and fragments are still known to exist. The interior consists of fine-grained material with numerous metallic grains and dust dispersed throughout. However, grains in several darker regions are even smaller than nearby lighter regions. Olivine is found in both chondrules and matrix with lesser amounts of prismatic pyroxene. Albitic plagioclase grains are usually quite small. Equilibrated olivine (Fa28) and orthopyroxene (Fs24) composition are characteristic of the LL Chondrite group.

Regions containing this locality

Eurasian PlateTectonic Plate
EuropeContinent

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
Formula: Na(AlSi3O8)
Reference: Fodor, R.V. & Keil, K. (1975) Implications of poikilitic textures in LL-group chondrites. Meteoritics 10(4), 325-340. (Dec 1975).
Albite var: Oligoclase
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
Reference: Fodor, R.V. & Keil, K. (1975) Implications of poikilitic textures in LL-group chondrites. Meteoritics 10(4), 325-340. (Dec 1975).
'Albite-Anorthite Series'
Reference: Baldanza, B., Levi-Donati, G.R. & Wiik, H.B. (1969) The Siena Meteorite: Mineralogy and Chemistry. Mineralogical Magazine 37(285): 34-44. (March 1969).
'Apatite'
Reference: Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.
Chromite
Formula: Fe2+Cr3+2O4
Description: As xenomorphic grains against silicate and as idiomorphic and rounded grains against metal and troilite.
Reference: Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.; Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.; Baldanza, B., Levi-Donati, G.R. & Wiik, H.B. (1969) The Siena Meteorite: Mineralogy and Chemistry. Mineralogical Magazine 37(285): 34-44. (March 1969).
Copper
Formula: Cu
Reference: Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.; Baldanza, B., Levi-Donati, G.R. & Wiik, H.B. (1969) The Siena Meteorite: Mineralogy and Chemistry. Mineralogical Magazine 37(285): 34-44. (March 1969).
Diopside
Formula: CaMgSi2O6
Description: Ca-rich clinopyroxene in poikilitic lithic fragments.
Reference: Fodor, R.V. & Keil, K. (1975) Implications of poikilitic textures in LL-group chondrites. Meteoritics 10(4), 325-340. (Dec 1975).
'Fayalite-Forsterite Series'
Description: Olivine also within orthopyroxene oikocrysts.
Reference: Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.; Baldanza, B., Levi-Donati, G.R. & Wiik, H.B. (1969) The Siena Meteorite: Mineralogy and Chemistry. Mineralogical Magazine 37(285): 34-44. (March 1969).; Fodor, R.V. & Keil, K. (1975) Implications of poikilitic textures in LL-group chondrites. Meteoritics 10(4), 325-340. (Dec 1975).
'Feldspar Group'
Description: Feldspar is mostly or entirely albitic plagioclase.
Reference: Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.
Ilmenite
Formula: Fe2+TiO3
Reference: Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.; Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.; Baldanza, B., Levi-Donati, G.R. & Wiik, H.B. (1969) The Siena Meteorite: Mineralogy and Chemistry. Mineralogical Magazine 37(285): 34-44. (March 1969).
Iron
Formula: Fe
Reference: - M. Chinellato : "Rocks From the Sky: Siena 1794", Meteorite Magazine, 08/2000
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.; Baldanza, B., Levi-Donati, G.R. & Wiik, H.B. (1969) The Siena Meteorite: Mineralogy and Chemistry. Mineralogical Magazine 37(285): 34-44. (March 1969).
'Orthopyroxene Subgroup'
Reference: Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.; Baldanza, B., Levi-Donati, G.R. & Wiik, H.B. (1969) The Siena Meteorite: Mineralogy and Chemistry. Mineralogical Magazine 37(285): 34-44. (March 1969).; Fodor, R.V. & Keil, K. (1975) Implications of poikilitic textures in LL-group chondrites. Meteoritics 10(4), 325-340. (Dec 1975).
'Plessite'
Reference: Baldanza, B., Levi-Donati, G.R. & Wiik, H.B. (1969) The Siena Meteorite: Mineralogy and Chemistry. Mineralogical Magazine 37(285): 34-44. (March 1969).
'Pyroxene Group'
Reference: - M. Chinellato : "Rocks From the Sky: Siena 1794", Meteorite Magazine, 08/2000
Spinel
Formula: MgAl2O4
Description: Present, but rare.
Reference: Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.; Baldanza, B., Levi-Donati, G.R. & Wiik, H.B. (1969) The Siena Meteorite: Mineralogy and Chemistry. Mineralogical Magazine 37(285): 34-44. (March 1969).
Taenite
Formula: (Fe,Ni)
Reference: Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.; Baldanza, B., Levi-Donati, G.R. & Wiik, H.B. (1969) The Siena Meteorite: Mineralogy and Chemistry. Mineralogical Magazine 37(285): 34-44. (March 1969).
Troilite
Formula: FeS
Reference: - M. Chinellato : "Rocks From the Sky: Siena 1794", Meteorite Magazine, 08/2000 ; Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.; Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.; Baldanza, B., Levi-Donati, G.R. & Wiik, H.B. (1969) The Siena Meteorite: Mineralogy and Chemistry. Mineralogical Magazine 37(285): 34-44. (March 1969).; Fodor, R.V. & Keil, K. (1975) Implications of poikilitic textures in LL-group chondrites. Meteoritics 10(4), 325-340. (Dec 1975).

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Copper1.AA.05Cu
Iron1.AE.05Fe
var: Kamacite1.AE.05(Fe,Ni)
Taenite1.AE.10(Fe,Ni)
Group 2 - Sulphides and Sulfosalts
Troilite2.CC.10FeS
Group 4 - Oxides and Hydroxides
Chromite4.BB.05Fe2+Cr3+2O4
Ilmenite4.CB.05Fe2+TiO3
Spinel4.BB.05MgAl2O4
Group 9 - Silicates
Albite9.FA.35Na(AlSi3O8)
var: Oligoclase9.FA.35(Na,Ca)[Al(Si,Al)Si2O8]
Diopside9.DA.15CaMgSi2O6
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Apatite'-
'Fayalite-Forsterite Series'-
'Feldspar Group'-
'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)
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
Spinel7.2.1.1MgAl2O4
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Diopside65.1.3a.1CaMgSi2O6
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
var: Oligoclase-(Na,Ca)[Al(Si,Al)Si2O8]
'Albite-Anorthite Series'-
'Apatite'-
'Fayalite-Forsterite Series'-
'Feldspar Group'-
Iron-Fe
'Orthopyroxene Subgroup'-
'Plessite'-
'Pyroxene Group'-

List of minerals for each chemical element

OOxygen
O ChromiteFe2+Cr23+O4
O IlmeniteFe2+TiO3
O SpinelMgAl2O4
O DiopsideCaMgSi2O6
O Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
O AlbiteNa(AlSi3O8)
NaSodium
Na Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
Na AlbiteNa(AlSi3O8)
MgMagnesium
Mg SpinelMgAl2O4
Mg DiopsideCaMgSi2O6
AlAluminium
Al SpinelMgAl2O4
Al Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
Al AlbiteNa(AlSi3O8)
SiSilicon
Si DiopsideCaMgSi2O6
Si Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
Si AlbiteNa(AlSi3O8)
SSulfur
S TroiliteFeS
CaCalcium
Ca DiopsideCaMgSi2O6
Ca Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
TiTitanium
Ti IlmeniteFe2+TiO3
CrChromium
Cr ChromiteFe2+Cr23+O4
FeIron
Fe IronFe
Fe TroiliteFeS
Fe ChromiteFe2+Cr23+O4
Fe IlmeniteFe2+TiO3
Fe Iron (var: Kamacite)(Fe,Ni)
Fe Taenite(Fe,Ni)
NiNickel
Ni Iron (var: Kamacite)(Fe,Ni)
Ni Taenite(Fe,Ni)
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: 3139119
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)
• Baldanza, B., Levi-Donati, G.R., & Wiik, H.B. (1969). Sulla posizione classificativa della meteorite di Siena. Rendiconti della Società Italiana di Mineralogia e Petrologia, 25, 173-178.
Baldanza, B., Levi-Donati, G.R. & Wiik, H.B. (1969) The Siena Meteorite: Mineralogy and Chemistry. Mineralogical Magazine 37(285): 34-44. (March 1969).
• G. Kurat, K. Fredriksson and J. Nelen : "Der Meteorit von Siena", Geochim. Cosmochim. Acta 33, 765-773, 1969.
Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
• Levi-Donati G. : "La meteorite di Siena: una pagina importante nella storia della Scienza", Atti Accad. Fisiocritici, serie XV, tomo XIII, p. XIX - XXVI, 1994
• Marvin, U. B., "Siena, 1794: History's Most Consequential Meteorite Fall", Meteoritics, vol. 30, no. 5, page 540, 09/1995
• M. Chinellato : "Rocks From the Sky: Siena 1794", Meteorite Magazine, 08/2000
Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.

External Links



This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.
 
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