Chemical Composition and Stratigraphic Correlation of the Mesozoic Basalt units of the Newark Basin, New Jersey, and the Hartford Basin, Connecticut

1981 ◽  
Vol 92 (4_Part_II) ◽  
pp. 515-553 ◽  
Author(s):  
J. H. Puffer ◽  
D. O. Hurtubise ◽  
F. J. Geiger ◽  
Paul Lechler
1983 ◽  
Vol 47 (345) ◽  
pp. 563-566 ◽  
Author(s):  
Pete J. Dunn ◽  
Donald R. Peacor ◽  
Joseph E. Nelen ◽  
Robert A. Ramik

AbstractGanophyllite from Franklin, New Jersey, Pajsberg, Sweden, and the Benallt Mine, Wales, has been chemically reinvestigated. Twelve new analyses confirm the general structure of Kato (1980) and yield the tentative formula (K,Na,Ca)2Mn8(Si,Al)12(O,OH)32(OH)4·8H2O. There is little solid solution among octahedral cations, and the Si:Al ratio is nearly constant at 10:2. Ca and (Na + K) are apparently differentiated, but all examined ganophyllites are K-rich. Much of the water content is loosely bound and the upper limit of water content is not well defined. Ganophyllite is relatively invariant in chemical composition from locality to locality.


Sign in / Sign up

Export Citation Format

Share Document