 | | Journal (article/letter/editorial) | | sandstone of nearly black colour with an average iron content of 20 wt.%. The existence of a humid, warm...the mobilization of Fe and Mn out of manganese-bearing ilmenite and magnetite, primarily present in the...is a definite correlation between the position of iron enrichment and tectonics in that area. The fracture...parts of the sandstone. The enrichment of iron and manganese was furthermore controlled by: ( 1 ) The...Apart from the predominant supergene nature of the iron enrichment, a lateral one, though on a subordinate |  | | Book (volume) | | VOLUME ONE, SEVENTH EDITION Clifford Frondel, Department of Mineralogy, Harvard University, Cambridge...for Co4As8^ read C04AS81*. tinder ref. 10 add 11. de Jong (Physica, 6, 325, 1926) by powder and rotation...and for 22il reads22il. in the 2 *535 under Ilmenite forms, for 537 544 F 0551 read P 0551. ...5, for Black Forest read Odenwald. for Rhine Province read Westphalia. for in the Tirol read, Salzburg...classification and description in Lindgren's Mineral Deposits. No attempt has been made to list all known |
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