Magmatic geochemistry of manganese. Review

Using modern estimations of the Mn-Clarkes (i. e. average Mn contents in igneous and orthometamorphic rocks — N. A. Grigoriev, 2003, 2006) Mn is shown as «dissiminated» element (that was postulated by Vernadsky in 1934). Mn/Fetot ratio (MM) is very stable in magmatic processes and holds in restricted interval 0.016—0.019. The stability is due to siderophilic Mn property — its close correlation with Fe. Such correlation results to Mn correlations with lithochemical moduls (ratios) — femic and ferrous. On the regional data is shown that MM may be greatly variable as some allochemical (metamorphic) processes were proceeded. So, such the variations may be used for geochemical indication.