data_9999
_chemical_name_mineral ?UICC Crocidolite?
_cell_length_a  9.73516(19)
_cell_length_b  18.04532(34)
_cell_length_c  5.328953(86)
_cell_angle_alpha 90
_cell_angle_beta  103.5159(12)
_cell_angle_gamma 90
_cell_volume 910.232(29)
_symmetry_space_group_name_H-M C12/m1
loop_
_symmetry_equiv_pos_as_xyz
	'-x, -y, -z'
	'-x, y, -z'
	'-x+1/2, -y+1/2, -z'
	'-x+1/2, y+1/2, -z'
	'x, -y, z'
	'x, y, z'
	'x+1/2, -y+1/2, z'
	'x+1/2, y+1/2, z'
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_symmetry_multiplicity
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_B_iso_or_equiv
M1 Fe   4 0 0.08970(19) 0.5 0.8726(41) 0.632
M2 Fe   4 0 0.18328(14) 0 0.9734(56) 0.531
M3 Fe   2 0 0 0 0.9304(61) 0.606
M4 Na   4 0 0.27596(37) 0.5 0.9455(95) 1.325
Am Na   2 0 0.5 0 0.025(12) 4.9
T1 Si   8 0.27876(37) 0.08489(17) 0.28726(54) 1 0.556
T2 Si   8 0.29367(43) 0.17104(19) 0.80605(67) 1 0.564
O1 O   8 0.10692(97) 0.09179(40) 0.2037(13) 1 0.706
O2 O   8 0.12048(89) 0.17403(33) 0.7297(12) 1 0.748
O3 O   4 0.1094(12) 0 0.6976(19) 1 0.853
O4 O   8 0.36371(93) 0.25042(36) 0.8015(13) 1 0.874
O5 O   8 0.34711(81) 0.13135(34) 0.0827(14) 1 0.895
O6 O   8 0.33791(74) 0.12181(31) 0.5709(12) 1 0.851
O7 O   4 0.3362(10) 0 0.3077(16) 1 0.935
H1 H   4 0.181 0 0.74 1 1.73705