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| Watson 011 | |||||||||||||||||||||||||||||||||||||
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| Basic information | Name: Watson 011 This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2009 Country: Australia Mass:  4.1 g | ||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 6493 approved meteorites (plus 2 unapproved names) classified as H4. [show all] Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||||||||
| Comments: | Approved 26 Oct 2010 | ||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 99:
Watson 011 30°31’S, 131°30’E South Australia, Australia Found: 12 May 2009 Classification: Ordinary chondrite (H4) History: D. Bradley found a single piece lying on the Nullarbor Plain. Physical characteristics: This sample weighs 4.1 g and measures 1.8 cm x 1.4 cm x 0.8 cm. The exterior is dark brown, rusty, and ~90% fusion crusted. Petrography: (Kim Lai N. Bell, Monash). Chondrules lie within a dark rusty brown matrix. Mineralogy is composed of olivine, pyroxene, Fe-Ni metal and sulfides. Olivine and pyroxene grains have undulose extinctions with larger grains exhibiting planar fracturing. Chondrule types include, RP, POP, BO and PP. Glass is not present with chondrules just discernible and ranging in size from 0.1-1 mm, with an average of 0.5 mm. Fe-Ni metals (4%) kamacite and taenite and the sulfide troilite (8%) occur as irregular shaped grains, with up to ~83% replaced by oxides. Geochemistry: EMPA (wt%) Olivine: SiO2 = 38.89, TiO2 = 0.07, Al2O3 = 0.03, FeO = 18.09, MnO = 0.45, MgO = 42.08, CaO = 0.03, Na2O = 0.01, K2O = 0.01, (Fa = 19.44 mol%, σ = 1.09, n = 8). Low Ca-Pyroxene: SiO2 = 55.86, TiO2 = 0.09, Al2O3 = 0.44, FeO = 11.29, MnO = 0.50, MgO = 30.49, CaO = 0.66, Na2O = 0.04, K2O = 0.01, (Fs = 16.86 mol%, σ = 1.14, n = 5). Kamacite: Ni = 6.48, Co = 0.32. Troilite: Fe = 63.04, Ni = 0.05. Classification: Ordinary chondrite (H5, S3, W3). Specimens: Sample and one thin section held by A. Tomkins at Monash. | ||||||||||||||||||||||||||||||||||||
| Data from: MB99 Table 0 Line 0: |
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| Institutions and collections |
Monash: Building 28
School of Geosciences
Monash University
Victoria 3800
Australia, Australia (institutional address; updated 12 Dec 2012) |
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| References: | Published in Meteoritical Bulletin, No. 99, April 2012, MAPS 47, E1-E52 (2012) [published online only]
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Geography:
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Statistics: This is 1 of 241 approved meteorites from South Australia, Australia (plus 3 unapproved names) (plus 4 impact craters) This is 1 of 719 approved meteorites from Australia (plus 11 unapproved names) (plus 27 impact craters) | ||||||||||||||||||||||||||||||||||||
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| Revision history: |
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