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San Juan 100
Basic information Name: San Juan 100
     This is an OFFICIAL meteorite name.
Abbreviation: SJ 100
Observed fall: No
Year found: 2018
Country: Chile
Mass:help 160.7 g
Classification
  history:
Recommended:  Ureilite    [explanation]

This is 1 of 480 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 2 Dec 2018
Writeuphelp
Writeup from MB 107:

San Juan 100 (SJ 100)        25°29.875’S, 69°44.639’W

Antofagasta, Chile

Find: 14 Feb 2018

Classification: Ureilite

Physical characteristics: Sawn surface shows a dark interior with scattered graphite flakes. Stone low weathered.

Petrography: Thin section shows typical ureilitic texture with interlocked olivine (40 vol%) and pyroxene (60 vol%) grains of 0.8-3 mm in size. Common graphite aggregates up to 1 mm are observed.

Geochemistry: Olivine cores in the range Fa11.4-13.1 (mean Fa11.9±0.5, N=18), with FeO/MnO=21.6±3.2 and Cr2O3=0.68±0.07. Pyroxene in the range Fs10.0-11.6 (mean Fs10.6±0.5Wo4.4±0.3, N=20).

Data from:
  MB107
  Table 0
  Line 0:
State/Prov/County:Antofagasta
Date:14 Feb 2018
Latitude:25°29.875'S
Longitude:69°44.639'W
Mass (g):160.7
Pieces:1
Class:Ureilite
Shock stage:medium
Weathering grade:low
Classifier:J. Llorca, UPC
Type spec mass (g):21
Type spec location:UPC
Main mass:David Allepuz
Finder:David Allepuz-José Vicente Casado-Javier Alvarez
Comments:Field name: Met-2018-032; submitted by David Allepuz
Institutions
   and collections
UPC: Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya Diagonal 647, ed. ETSEIB, 08028 Barcelona, Spain, Spain (institutional address; updated 3 May 2015)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, in preparation (2018)
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Geography:

Chile
Coordinates:
     Recommended::   (25° 29' 53"S, 69° 44' 38"W)

Statistics:
     This is 1 of 1270 approved meteorites from Antofagasta, Chile (plus 1 unapproved name) (plus 1 impact crater)
     This is 1 of 1297 approved meteorites from Chile (plus 7 unapproved names) (plus 1 impact crater)
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