...C. A. Francis; P. H. Ribbe Abstract The crystal structure of type manganhumite from the Brattfors mine, Nordmark, Sweden [(Mn 0.68 Mg 0.30 Fe 0.01 Ca 0.01 ) 7 (SiO 4 ) 3 (OH) 2 , Pbnm, a = 4.815(1), b = 10.580(2), с = 21.448(5)A] has been refined by conventional least-squares methods to R = 0.051...

.... ( 1978 ): Crystal structure of humite minerals: V. Magnesian manganhumite . Am. Mineral ., 63 , 874 – 877 . Frost , R.L. , Palmer , S.J. , Bouzaid , J.M. , Reddy , B.J. ( 2007 a): A Raman spectroscopic study of humite minerals . J. Raman Spectrosc ., 38 , 68 – 77...

... and coarser-grained in skarn where it coexists with kutnahorite, tephroite, fluorian manganhumite, spessartine, jacobsite, and manganoan magnetite. A-sites in kinoshitalite in skarn are about 3/4 occupied by Ba (with the remainder mostly K), whereas in marble, Ba occupancy of A-sites exceeds 90% and most...