Meteoritical Bulletin: Entry for San Juan 100

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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: 160.7 g

Classification
history:

Meteoritical Bulletin:	MB 107	(2018)	Ureilite
Recommended:			Ureilite [explanation]

This is 1 of 660 approved meteorites classified as Ureilite. [show all]
Search for other: Achondrites, Ureilites

Comments:

Approved 2 Dec 2018

Writeup

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 Fa_11.4-13.1(mean Fa_11.9±0.5, N=18), with FeO/MnO=21.6±3.2 and Cr₂O₃=0.68±0.07. Pyroxene in the range Fs_10.0-11.6(mean Fs_10.6±0.5Wo_4.4±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, MAPS 55, 460-462

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Geography:

Chile

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

Statistics:
This is 1 of 3442 approved meteorites from Antofagasta, Chile (plus 12 unapproved names) (plus 1 impact crater)
This is 1 of 3471 approved meteorites from Chile (plus 13 unapproved names) (plus 1 impact crater)

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Revision
history:

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