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The scanning electron micrograph (Fig. 3)
shows phosphate particles in irregular or round
forms, osseous and organic remains as well as
quartz grounds. At the surface of the particles, we
observe a crystalline envelope of stafeitte, a fibrous
variety of the francolite.

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Mally89(½ð±Ò+1): »¶Ó­³£À´£¡~ 2011-05-09 20:01:37
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Mally89(½ð±Ò+1): £¿Ôõô»¹ÊÇгæÄØ£¿¸Ð¾õÄãµÄʱ¼äÂù³¤µÄ°¡~ 2011-05-09 20:02:03
ÁðÁ§ÁðÁ§(½ð±Ò+1): 2011-05-11 17:34:38
The scanning electron micrograph (Fig. 3)
shows phosphate particles in irregular or round
forms, osseous and organic remains as well as
quartz grounds. At the surface of the particles, we
observe a crystalline envelope of , a fibrous
variety of the francolite.
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