对贵州瓮安磷块岩中针状结构物进行了光学显微镜和电子扫描显微镜观察和研究，没有证实前人将针状结构物作为海绵骨针的解释．在被观察的大量针状物中，没有见到令人信服的轴沟，而单轴针状物与明显成岩结晶束状物及哑铃状物一起保存，表明单轴针状物可能也是在成岩期形成．对包含丰富单轴针状物的内碎屑（无机成因及球形疑源类或藻类定形群体的成岩残留体）的能谱检测分析，没有发现有意义的硅．据此认为，对陡山沱磷块岩中微小针状物作为海绵骨针解释的证据是不充足的，并且没有与成岩期形成的结晶矿物加以区别． Optical microscopy and scanning electron microscopy were used to observe the acicular structures in Weng’an phosphorite rocks in Guizhou Province. There is no evidence that acicular structures were used as an explanation for spongy spongles. In the large number of needles observed, no convincing axial grooves were seen, while the uniaxial needles were preserved with distinct diagenetic crystalline bundles and dumbbells, suggesting that uniaxial needles may also be diagenetic Period of formation. No significant silicon was found for the energy spectrum analysis of the inner detritus (inorganic origin and diurnal remnants of spheroidal or macrophyllorphic colonies) with abundant uniaxial needles. Therefore, it is considered that there is not enough evidence to interpret the tiny needle in the Doushantuo phosphate rock as a sponge spicule, and it is not distinguished from the crystalline minerals formed during diagenesis.