Vicência meteorite, Borracha, Vicência, Pernambuco, Brazili
| Regional Level Types | |
|---|---|
| Vicência meteorite | Meteorite Fall Location |
| Borracha | - not defined - |
| Vicência | City |
| Pernambuco | State |
| Brazil | Country |
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Latitude & Longitude (WGS84):
7° 42' 30'' South , 35° 25' 40'' West
Latitude & Longitude (decimal):
Locality type:
Meteorite Class:
Meteoritical Society Class:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Vicência | 10,378 (2012) | 12.5km |
| Natuba | 3,333 (2012) | 15.4km |
| Macaparana | 14,362 (2012) | 17.3km |
| Limoeiro | 42,328 (2012) | 18.7km |
| Orobó | 5,884 (2012) | 19.6km |
Ordinary chondrite, unequilibrated (LL3.2; S1)
Fall, 21 Sept 2013;1.54 kg, single stone
With a moderate clap, a single, nearly intact meteoritic stone fell ~ 1 m from a Mr. Silva while he was fixing a wagon. The strange black rock was soon noticed in a small pit. Portions of the stone have been sectioned for intensive study and have revealed an unequilibrated chondrite with clearly delineated chondrules (~65 vol%) up to ~3 mm in diameter accompanied dark matrix (~12 vol%), metal-sulfide (~6 vol%) and assorted fragments and grains. Prominent features include well-developed porphyritic olivine and radial pyroxene chondrules and unusual secondary fayalite grains in matrix. Composition of both Mg-Fe olivines and pyroxenes range from Fe-free grains in chondrules to Fe-dominant compositions in chondrules, rims and matrix. Fe-Ni metal is mostly kamacite, but zoned taenite includes evidence of both tetrataenite and antitaenite. Several other minerals as well as disordered carbon and glassy mesostasis are also reported.
For LL chondrites, Vicência's cosmic ray exposure age is an unusually high 72 Ma. Vicência is one of only four LL chondrite falls that have been classified as primitive as LL3.2. The other three are Semarkona (LL3.00), Bishunpur (LL3.15) and Krymka (LL3.2).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
9 valid minerals.
Meteorite/Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ 'Antitaenite' Formula: Fe3Ni Description: Intergrown with tetrataenite. Reference: Keil, K & 22 others (2015) The Vicência meteorite fall: A new unshocked (S1) weakly metamorphosed (3.2) LL chondrite. Meteoritics & Planetary Science 50(6): 1089-1111. (June 2015). |
| ⓘ Diopside Formula: CaMgSi2O6 Reference: Keil, K & 22 others (2015) The Vicência meteorite fall: A new unshocked (S1) weakly metamorphosed (3.2) LL chondrite. Meteoritics & Planetary Science 50(6): 1089-1111. (June 2015). |
| ⓘ Fayalite Formula: Fe2+2SiO4 Description: Matrix grains (up to nearly 100 µm in size) have Fe-rich (Fa>75) composition. Reference: Keil, K & 22 others (2015) The Vicência meteorite fall: A new unshocked (S1) weakly metamorphosed (3.2) LL chondrite. Meteoritics & Planetary Science 50(6): 1089-1111. (June 2015). |
| ⓘ 'Fayalite-Forsterite Series' Reference: Keil, K & 22 others (2015) The Vicência meteorite fall: A new unshocked (S1) weakly metamorphosed (3.2) LL chondrite. Meteoritics & Planetary Science 50(6): 1089-1111. (June 2015).; http:www.lpi.usra.edu/meteor/metbull.php?code=60304 |
| ⓘ Forsterite Formula: Mg2SiO4 Description: Olivine with dominant forsterite component (Fa0-10) found in a number of olivine-bearing chondrules. Reference: Keil, K & 22 others (2015) The Vicência meteorite fall: A new unshocked (S1) weakly metamorphosed (3.2) LL chondrite. Meteoritics & Planetary Science 50(6): 1089-1111. (June 2015). |
| ⓘ 'Glass' Reference: Keil, K & 22 others (2015) The Vicência meteorite fall: A new unshocked (S1) weakly metamorphosed (3.2) LL chondrite. Meteoritics & Planetary Science 50(6): 1089-1111. (June 2015). |
| ⓘ Graphite Formula: C Reference: Keil, K & 22 others (2015) The Vicência meteorite fall: A new unshocked (S1) weakly metamorphosed (3.2) LL chondrite. Meteoritics & Planetary Science 50(6): 1089-1111. (June 2015). |
| ⓘ Iron Formula: Fe Description: Kamacite- primary constituent of Fe-Ni metal (w. ~5.9 wt.%Ni & 1.7 wt.% Co). Reference: Keil, K & 22 others (2015) The Vicência meteorite fall: A new unshocked (S1) weakly metamorphosed (3.2) LL chondrite. Meteoritics & Planetary Science 50(6): 1089-1111. (June 2015).; http:www.lpi.usra.edu/meteor/metbull.php?code=60304 |
| ⓘ Iron var. Kamacite Formula: (Fe,Ni) Description: Kamacite- primary constituent of Fe-Ni metal (w. ~5.9 wt.%Ni & 1.7 wt.% Co). Reference: Keil, K & 22 others (2015) The Vicência meteorite fall: A new unshocked (S1) weakly metamorphosed (3.2) LL chondrite. Meteoritics & Planetary Science 50(6): 1089-1111. (June 2015).; http:www.lpi.usra.edu/meteor/metbull.php?code=60304 |
| ⓘ 'Pyroxene Group' Formula: ADSi2O6 Description: Low-Ca pyroxene (Fs0.4-29.8). Reference: http:www.lpi.usra.edu/meteor/metbull.php?code=60304 |
| ⓘ Spinel Formula: MgAl2O4 Reference: Keil, K & 22 others (2015) The Vicência meteorite fall: A new unshocked (S1) weakly metamorphosed (3.2) LL chondrite. Meteoritics & Planetary Science 50(6): 1089-1111. (June 2015). |
| ⓘ Taenite Formula: (Fe,Ni) Reference: Keil, K & 22 others (2015) The Vicência meteorite fall: A new unshocked (S1) weakly metamorphosed (3.2) LL chondrite. Meteoritics & Planetary Science 50(6): 1089-1111. (June 2015). |
| ⓘ Tetrataenite Formula: FeNi Description: A component of the cloudy& zoned taenite [present in Mössbauer spectrum]. Reference: Keil, K & 22 others (2015) The Vicência meteorite fall: A new unshocked (S1) weakly metamorphosed (3.2) LL chondrite. Meteoritics & Planetary Science 50(6): 1089-1111. (June 2015). |
| ⓘ Troilite Formula: FeS Reference: Keil, K & 22 others (2015) The Vicência meteorite fall: A new unshocked (S1) weakly metamorphosed (3.2) LL chondrite. Meteoritics & Planetary Science 50(6): 1089-1111. (June 2015). |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | 'Antitaenite' | 1.AE.10 | Fe3Ni |
| ⓘ | Graphite | 1.CB.05a | C |
| ⓘ | Iron | 1.AE.05 | Fe |
| ⓘ | var. Kamacite | 1.AE.05 | (Fe,Ni) |
| ⓘ | Taenite | 1.AE.10 | (Fe,Ni) |
| ⓘ | Tetrataenite | 1.AE.10 | FeNi |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Troilite | 2.CC.10 | FeS |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Spinel | 4.BB.05 | MgAl2O4 |
| Group 9 - Silicates | |||
| ⓘ | Diopside | 9.DA.15 | CaMgSi2O6 |
| ⓘ | Fayalite | 9.AC.05 | Fe2+2SiO4 |
| ⓘ | Forsterite | 9.AC.05 | Mg2SiO4 |
| Unclassified Minerals, Rocks, etc. | |||
| ⓘ | 'Fayalite-Forsterite Series' | - | |
| ⓘ | 'Glass' | - | |
| ⓘ | 'Pyroxene Group' | - | ADSi2O6 |
List of minerals for each chemical element
| C | Carbon | |
|---|---|---|
| C | ⓘ Graphite | C |
| O | Oxygen | |
| O | ⓘ Diopside | CaMgSi2O6 |
| O | ⓘ Fayalite | Fe22+SiO4 |
| O | ⓘ Forsterite | Mg2SiO4 |
| O | ⓘ Spinel | MgAl2O4 |
| O | ⓘ Pyroxene Group | ADSi2O6 |
| Mg | Magnesium | |
| Mg | ⓘ Diopside | CaMgSi2O6 |
| Mg | ⓘ Forsterite | Mg2SiO4 |
| Mg | ⓘ Spinel | MgAl2O4 |
| Al | Aluminium | |
| Al | ⓘ Spinel | MgAl2O4 |
| Si | Silicon | |
| Si | ⓘ Diopside | CaMgSi2O6 |
| Si | ⓘ Fayalite | Fe22+SiO4 |
| Si | ⓘ Forsterite | Mg2SiO4 |
| Si | ⓘ Pyroxene Group | ADSi2O6 |
| S | Sulfur | |
| S | ⓘ Troilite | FeS |
| Ca | Calcium | |
| Ca | ⓘ Diopside | CaMgSi2O6 |
| Fe | Iron | |
| Fe | ⓘ Antitaenite | Fe3Ni |
| Fe | ⓘ Fayalite | Fe22+SiO4 |
| Fe | ⓘ Iron var. Kamacite | (Fe,Ni) |
| Fe | ⓘ Taenite | (Fe,Ni) |
| Fe | ⓘ Tetrataenite | FeNi |
| Fe | ⓘ Troilite | FeS |
| Fe | ⓘ Iron | Fe |
| Ni | Nickel | |
| Ni | ⓘ Antitaenite | Fe3Ni |
| Ni | ⓘ Iron var. Kamacite | (Fe,Ni) |
| Ni | ⓘ Taenite | (Fe,Ni) |
| Ni | ⓘ Tetrataenite | FeNi |
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A)Keil, K & 22 others (2015) The Vicência meteorite fall: A new unshocked (S1) weakly metamorphosed (3.2) LL chondrite. Meteoritics & Planetary Science 50(6): 1089-1111. (June 2015).
Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.
External Links
http://www.lpi.usra.edu/meteor/metbull.php - MeteoriticalBulletinDatabase
http://www.lpi.usra.edu/meteor/metbull.php?code=60304 -Vicência@MetBullDatabase
http://www.lpi.usra.edu/meteor/get_original_photo.php?recno=5665856 -photo
http://adsabs.harvard.edu/abs/2015M%26PS...50.1089K -Keil&22@MAPS
http://www.lpi.usra.edu/meteor/metbull.php?code=60304 -Vicência@MetBullDatabase
http://www.lpi.usra.edu/meteor/get_original_photo.php?recno=5665856 -photo
http://adsabs.harvard.edu/abs/2015M%26PS...50.1089K -Keil&22@MAPS
Other Regions, Features and Areas containing this locality
South AmericaContinent
South America PlateTectonic Plate
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