 |
 |
 |
 |
 |
 |
 |
         
|
 
  |
 |
 |
 |
 |
 |
|
Northwest Africa 2286 2.7g Northwest Africa Purchased 2003 Achondrite (olivine-rich diogenite) A single stone of 82 g was found 2003 by an anonymous finder in the Occidental Sahara and purchased in 2003 in Morocco. Classification and mineralogy (A. Greshake, MNB): is dominated by large blocky orthopyroxene crystals and ~20% large olivine phenocrysts; minor phases include FeS, and Fe-Al-Cr-spinel; orthopyroxene, Fs21.9Wo1.5, olivine, Fa26.8; low degree of shock; moderately to strongly weathered and very friable; most likely paired with NWA 1877. Specimens: main mass with anonymous finder; type specimen 23.5 g plus one polished thin section MNB.
5320元台幣
|
||||||||||||||||||||||||
| 第0頁/共0頁 | ||
|
Copyright
© 2001 SUN PORO INTERNATIONAL INDUSTRY CO., LTD. All rights reserved.
建議使用800x600解析度及IE4.0以上瀏覽器觀看
 |