Evaluation of Rock Burst Propensity and Rock Burst Mechanism in Deep Phosphate Mines: A Case Study of Sujiapo Phosphate Mine, Hubei Province, China

Figure 6

Microscopic morphology of phosphorite masses: (a) 50 μm SEM observation chart; (b) 5 μm SEM observation chart; (c) 1 μm SEM observation chart.

(a)

(b)

(c)