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| Watson 008 | |||||||||||||||||||||||||||||||||||||
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| Basic information | Name: Watson 008 This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2009 Country: Australia Mass:  1.5 g | ||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 11568 approved meteorites (plus 23 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 26 Oct 2010 | ||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 99:
Watson 008 30°30’S, 131°41’E South Australia, Australia Found: 10 May 2009 Classification: Ordinary chondrite (H5) History: Single piece found by K L. Bell on the Nullarbor Plain. Physical characteristics: Small (1.1 x 1.2 x 0.5 cm, 1.5 g), rusty brown specimen. There are no obvious chondrules or fusion crust on the exterior. Small chondrules are evident within the rusted interior. Petrography: (Kim Lai N. Bell, Monash). Specimen has a chondritic texture of chondrules lying in a dark-stained matrix. Mineralogy includes olivine, pyroxene, plagioclase, Fe-Ni metal and sulfides. Olivine and pyroxenes have a straight to undulose extinction with irregular fracturing apparent. Chondrules are readily delineated (~50%), absent of glass and have diameters ranging from 0.25-1 mm with an average of 0.3 mm. Textural types that occur are RP, PO and POP. Metallic phases (7%) include taenite and kamacite varieties. These metals, as well as troilite (4%) have been oxidized along grain boundaries, with about 40% of these phases being replaced. Geochemistry: EMPA (wt%) Olivine: SiO2 = 39.02, TiO2 = 0.01, Al2O3 = 0.00, FeO = 218.32, MnO = 0.45, MgO = 42.28, CaO = 0.01, Na2O = 0.00, K2O = 0.00 (Fa = 19.94 mol%, σ = 0.51, n = 8). Low-Ca pyroxene: SiO2 = 56.64, TiO2 = 0.16, Al2O3 = 0.21, FeO = 11.53, MnO = 0.48, MgO = 30.55, CaO = 0.64, Na2O = 0.05, K2O = 0.01, (Fs = 17.14 mol%, σ = 0.34, n = 8). Plagioclase: SiO2 = 68.68, TiO2 = 0.05, Al2O3 = 21.99, FeO = 0.48, MnO = 0.00, MgO = 0.02, CaO = 2.54, Na2O = 19.30, K2O = 1.25 (An = 12.68 mol%). Kamacite: Ni = 6.18, Co = 0.40. Classification: Ordinary chondrite (H5) (S2) (W2). 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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| Catalogs: |
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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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