 | | Journal (article/letter/editorial) | | Enrichment in the Kalahari Manganese Field, South Africa: A new discrimination scheme for Kalahari manganese...Department of Geology, University of Johannesburg, South Africa University College Dublin (UCD), School of Earth...thrust fault in the Kalahari Manganese Field, South Africa has undergone three significant alterations events...Mamatwan-type manganese ore from Mamatwan mine in the south of the Kalahari Manganese Field as a reference...this study include Mamatwan, Sebilo and UMK mine in the south and Mukulu mine in the north of the Kalahari |  | Niu, Sida, Zhao, Liqun, Lin, Xiaoju, Chen, Tong, Wang, Yingchao, Mo, Lingchao, Niu, Xianglong, Wu, Huaying, Zhang, Min, Huizenga, Jan Marten, Long, Peng (2021) Mineralogical Characterization of Manganese Oxide Minerals of the Devonian Xialei Manganese Deposit. Minerals, 11 (11) 1243 doi:10.3390/min11111243 | Journal (article/letter/editorial) | | Box 524, Auckland Park, Johannesburg 2006, South Africa China Metallurgical Geology Bureau of Geological...Autonomous Region is an important manganese ore district in Southwest China, with manganese ore resource...oxide, and (2) massive Mn oxide. Pyrolusite, cryptomelane, and hollandite are the main Mn oxide minerals...minerals. The potassium contents of cryptomelane and pyrolusite are discussed. The unit cell parameters of...the Xialei deposit [11,14] has been limited to cryptomelane, i.e., other Mn oxide minerals have not been |  | | Journal (article/letter/editorial) | | Department of Geology, University of Johannesburg, South Africa e-mail: nickvafeas@gmail.com; ljolly@uj.ac.za;...Meffre@utas.edu.au © 2018 June Geological Society of South Africa. Abstract The manganese ore of the Hotazel...the Blackridge thrust fault (Van Niekerk, 2006). SOUTH AFRICAN JOURNAL OF GEOLOGY 2018 • VOLUME 121.2 PAGE...with the only analytical samples arising from the south of the Kalahari deposit (Gutzmer et al., 2012)....limestones of the Mooidraai Formation (Figure 1B). SOUTH AFRICAN JOURNAL OF GEOLOGY Downloaded from https://pubs |  | | Journal (article/letter/editorial) | | Department of Geology, University of Johannesburg, South Africa University College Dublin (UCD) School of Earth...Department of Geology, University of Johannesburg, South Africa e-mail: ljolly@uj.ac.za; fanusv@uj.ac.za P....University of Cape Town, South Africa e-mail: petrus.leroux@uct.ac.za © 2019 Geological Society of South Africa...precipitate, having only undergone diagenesis SOUTH AFRICAN JOURNAL OF GEOLOGY 2019 • VOLUME 122.2 PAGE...the pre-Mapedi/Gamagara unconformity. Towards the south-west, however, the Mooidraai Formation pinches out |  | | Book | | the isotopic compositions of the parent stars by local heterogeneities in the galaxy caused by the stochastic...made in calculating solar abundances is that of local thermodynamic equilibrium (LTE), i.e., “the quantum-mechanical...recent calculations effects of NLTE (nonthermal local equilibrium thermodynamics) and of photospheric...the formation of the solar system, we can use the local ISM as a measure of the original presolar composition...Differences between the solar system and current local ISM would imply that fractionation occurred during |
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