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North West Africa 6290

 

Classification Diogenite Breccia

Status OFFICIAL Listed in the Meteoritical Bulletin Database

Purchase or find date NWA 2010

Total Known Weight
1000g

Specimen Weight 6g end cut

 

7680元台幣

 

下圖為4.1克

5200元台幣

Composition Fresh polymict breccia composed predominantly of distinctly “milky” orthopyroxene fragments and some polycrystalline clasts, with sparse pigeonite, olivine (bimodal in composition), calcic plagioclase, chromite, troilite and Ni-poor metal.  Orthopyroxene (Fs22.9-24.9Wo1.0; FeO/MnO = 30.8-31.0), pigeonite (Fs28.1-29.1Wo13.4-7.0; FeO/MnO = 22/6-26.0), magnesian olivine (Fa12.9-13.1; FeO/MnO = 40.9-48.5), ferroan olivine (Fa31.0; FeO/MnO = 44.2).  Most of the orthopyroxene is charged with microscopic inclusions of chromite and troilite, which render it pale tan-colored in thin section.


 
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