Table 1.

Morphological information of biogenic magnetite from published transmission electron microscopic (TEM) images.

crystal form	MTB type	references	length (nm)	width (nm)	elongation	gap (nm)a	particles #
cuboctahedron	MSR-1	Uebe & Schüler [3]	44.54 ± 8.17	41.87 ± 7.53	1.06 ± 0.06	6.08 ± 2.53	34
cuboctahedron	AMB-1	Li et al. [11]	47.63 ± 10.99	42.37 ± 10.07	1.13 ± 0.11	7.11 ± 5.31	30
prism	SHHR-1	Li et al. [11]	79.11 ± 16.73	58.96 ± 10.54	1.34 ± 0.14	5.06 ± 1.83	15
prism	XJHC-1	Liu et al. [30]	100.63 ± 17.20	78.13 ± 15.14	1.30 ± 0.10	3.84 ± 1.86	16
bullet	WYHR-1	Li et al. [31]	86.71 ± 29.22	35.69 ± 4.22	2.41 ± 0.72	-	50
bullet	rod	Amor et al. [2]	126.78 ± 32.64	42.28 ± 4.89	2.97 ± 0.66	-	44

^aThe particle gap of bullet magnetosome chains cannot be effectively measured owing to irregular chain arrangement and multiple chain branching.