Citation: Veblen, D. R.; Burnham, C. W. (1978). New biopyriboles from Chester, Vermont: II. The crystal chemistry of jimthompsonite, clinojimthompsonite, and chesterite, and the amphibole-mica reaction. American Mineralogist, 63, pp. 1053-1073.
Formula: Fe1.108 H2 Mg3.892 O18 Si6
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Fe40 Mg40 O144 Si48 (Fe5 Mg5 O18 Si6)
Multiplicity: 1