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Bates Nunataks 00303
Basic information Name: Bates Nunataks 00303
     This is an OFFICIAL meteorite name.
Abbreviation: BTN 00303
Observed fall: No
Year found: 2000
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 15.8 g
Classification
  history:
NHM Catalogue:  5th Edition  (2000)  H3.3
Antarctic Meteorite Newsletter:  AMN 25(2)  (2002)  H3.3
Meteoritical Bulletin:  MB 87  (2003)  H3.3
MetBase:  v. 7.1  (2006)  H3.3
Recommended:  H3.3    [explanation]

This is 1 of 7 approved meteorites classified as H3.3.   [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Writeuphelp
Writeup from AMN 25(2):
Sample No.: BTN 00301; BTN 00302; BTN 00303
Location: Bates Nunataks
Field No.: 12006; 12012; 12075
Dimensions (cm):   4.0x2.5x2.75
3.0x2.5x2.25
2.5x2.0x1.5
Weight (g): 33.765; 37.060; 15.809
Meteorite Type: H3 Chondrite (Subtype 3.3)
    BTN00301 BTN00302 BTN00303

Macroscopic Description: Kathleen McBride
The exterior of these chondrites have approximately 50% brown/black fusion crust with polygonal fractures and oxidation haloes. The interiors are composed of a black matrix with numerous chondrules that are gray, white and rust in color. The size range is 1-2 mm in diameter. There are various odd shaped inclusions 1-3 mm in length of the same colors as well as some that are tan in color. These meteorites are hard.

Thin Section (, 2) Description: Gretchen Benedix, Linda Welzenbach and Tim McCoy
These sections exhibit numerous small, well-defined chondrules (up to 1.5 mm) in a black matrix of fine-grained silicates, metal and troilite. Weak shock effects are present. Polysynthetically twinned pyroxene is extremely abundant. Silicates are unequilibrated; olivines range from Fa1-38 and pyroxenes from Fs2-21. The meteorites are H3 chondrites (estimated subtype 3.3).

Skip Thin Section Images btn00301 302 303
BTN 00301 - Plane-Polarized Light BTN 00301 - Cross-Polarized Light BTN 00301 - Plane-Polarized Light BTN 00301 - Reflected Light BTN 00301 - Cross-Polarized Light
BTN 00301
Plane-Pol. Light
BTN 00301
Cross-Pol. Light
BTN 00301
Plane-Pol. Light
BTN 00301
Reflected Light
BTN 00301
Cross-Pol. Light
Skip Thin Section Images btn00301 302 303
BTN 00302 - Plane-Polarized Light BTN 00302 - Cross-Polarized Light BTN 00302 - Plane-Polarized Light BTN 00302 - Cross-Polarized Light
BTN 00302
Plane-Pol. Light
BTN 00302
Cross-Pol. Light
BTN 00302
Plane-Pol. Light
BTN 00302
Cross-Pol. Light
Skip Thin Section Images btn00301 302 303
BTN 00303 - Plane-Polarized Light BTN 00303 - Cross-Polarized Light BTN 00303 - Plane-Polarized Light BTN 00303 - Cross-Polarized Light
BTN 00303
Plane-Pol. Light
BTN 00303
Cross-Pol. Light
BTN 00303
Plane-Pol. Light
BTN 00303
Cross-Pol. Light
Data from:
  MB87
  Table A1
  Line 3:
Origin or pseudonym:Bates North
Mass (g):15.81
Class:H3.3
Weathering grade:B
Fayalite (mol%):1-30
Ferrosilite (mol%):2-19
Comments:00301 pairing group
Catalogs:
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 25(2) (2002), JSC, Houston
Published in Meteoritical Bulletin, no. 87, MAPS 38, A189-A248 (2003)
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Photos:
CreditPhotos
Photographs from AMN:
Photograph from unknown source A photo is in the write-up above
Photos from the Encyclopedia of Meteorites:
Dr Carlton Allen, JSC-KT, NASA            
Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (80° 15'S, 153° 30'E)
     Recommended::   (80° 15'S, 153° 30'E)

Statistics:
     This is 1 of 38674 approved meteorites from Antarctica (plus 5051 unapproved names)
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