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: Fe4.18 H6 Mg12.82 O60 Si20
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Fe68 Mg68 O240 Si80 (Fe17 Mg17 O60 Si20)
Multiplicity: 1