header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 28 Nov 2020
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Years
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls  Non-NWAs
What's new
  in the last:
Limit to approved meteorite names
Search text:  
Watson 008
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:help 1.5 g
Classification
  history:
Meteoritical Bulletin:  MB 99  (2011)  H5
Recommended:  H5    [explanation]

This is 1 of 10151 approved meteorites (plus 18 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
Writeuphelp
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:
State/Prov/County:South Australia
Origin or pseudonym:Nullarbor
Date:10 May 2009
Latitude:30°30'S
Longitude:131°41'E
Mass (g):1.5
Pieces:1
Class:H5
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):19.6
Ferrosilite (mol%):17.1
Classifier:K.-L.N. Bell
Type spec mass (g):1.5
Type spec location:Monash
Main mass:Monash
Finder:K.-L. N. Bell
Comments:Submitted by K.-L.N. Bell, A. Tomkins
Institutions
   and collections
Monash: Building 28 School of Geosciences Monash University Victoria 3800 Australia, Australia (institutional address; updated 12 Dec 2012)
Catalogs:
References: Published in Meteoritical Bulletin, No. 99, April 2012, MAPS 47, E1-E52 (2012) [published online only]
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Australia
Coordinates:
     Recommended::   (30° 30'S, 131° 41'E)

Statistics:
     This is 1 of 238 approved meteorites from South Australia, Australia (plus 2 unapproved names) (plus 4 impact craters)
     This is 1 of 710 approved meteorites from Australia (plus 45 unapproved names) (plus 27 impact craters)
Proximity search:
Find nearby meteorites: enter search radius (km):

Direct link to this page