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Valle
Basic information Name: Valle
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No, but it is possible
Year found: 2013
Country: Norway
Mass:help 4.7 kg
Classification
  history:
Recommended:  H5    [explanation]

This is 1 of 10151 approved meteorites (plus 18 unapproved names) classified as H5.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 5 Sep 2020
Writeuphelp
Writeup from MB 109:

Valle        59°01’20.9"N, 7°15’28.1" E

Aust-Agder, Norway

Find, possible fall: 2013 Jun 9

Classification: Ordinary chondrite (H5)

History: (M. Bilet, H. Friis, UOslo) The meteorite was found on 9 June 2013 by Terje Fjeldheim, during a fishing trip in an open mountain area above tree line, near a small lake. The rock was in a small pit in the ground and was clearly discernible from the surrounding terrain. The meteorite was split into two pieces when discovered. A fireball was observed by the Norwegian Meteorite Camera Network on February 2, 2012, where the triangulation indicates an impact that overlaps with the location where this meteorite was discovered.

Physical characteristics: (A. Krzesinska, UOslo) Meteorite has thick black fusion crust covering whole specimen. On the broken surface, light interior is seen with chondritic texture. Minor weathering of FeNi minerals is seen on broken surface, on its outermost part and is manifested by rusty appearance.

Petrography: (A. Krzesinska, UOslo) Recrystallized chondritic texture manifested by presence of some chondrules, up to 800 µm in size, relatively well preserved with glassy-microcrystalline mesostasis. Some orthorhombic pyroxene present in fine-grained matrix. Weakly shocked, with olivine exhibiting only minor undulose extinction and irregular fractures.

Geochemistry: (A. Krzesinska, M. Erambert, UOslo) Equilibrated H chondrite. Olivine with Fa18.2±0.4, low-Ca pyroxene Fs16.1±0.3Wo1.60.4, glassy mesostasis of plagioclase composition (An10.0±0.5Or5.2±1.5) and diopside crystallites in places (Fs5.8±0.1Wo46.0±0.6), chromite (Fe,Cr-rich; Fe#=0.85, Cr#=0.88), merrillite (up to 2.8 wt% Na2O, 3.6 wt% of MgO and 0.38 wt% FeO), and Cl-apatite (up to 0.35 wt% Na2O and various content of Cl, up to pure Cl-apatite with 5.62 wt% Cl). Kamacite with 0.45-0.49 wt% Co, taenite and tetrataenite also present.

Classification: (A. Krzesinska, UOslo) Ordinary chondrite, H5 type based on composition of silicates and metal.

Specimens: (H. Friis, M. Bilet, UOslo): Specimen broken into two fragments (4700 in total), both in the collection of the Natural History Museum at UOslo. Two thin sections prepared out of it, and two epoxy mounts.

Data from:
  MB109
  Table 0
  Line 0:
State/Prov/County:Aust-Agder
Origin or pseudonym:Valle
Date:2013 Jun 9
Latitude:59°01'20.9"N
Longitude:7°15'28.1" E
Mass (g):4700
Pieces:2
Class:H5
Shock stage:S2
Weathering grade:W0/1
Fayalite (mol%):18.2±0.4 (n=38)
Ferrosilite (mol%):16.1±0.3 (n=36)
Wollastonite (mol%):1.6±0.4 (n=36)
Classifier:Agata Krzesinska, UOslo
Type spec mass (g):4700
Type spec location:UOslo
Main mass:UOslo
Finder:Terje Fjeldheim
Comments:Submitted by Henrik Friis
Institutions
   and collections
UOslo: Natural History Museum University of Oslo Att. Henrik Friis PO 1172 Blindern 0318 Oslo Norway, Norway (institutional address; updated 18 Jul 2020)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Geography:

Norway
Coordinates:
     Recommended::   (59° 1' 21"N, 7° 15' 28"E)

Statistics:
     This is 1 of 2 approved meteorites from Aust-Agder, Norway
     This is 1 of 15 approved meteorites from Norway (plus 3 impact craters)
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