NURCHOLIS, Mohamad and Kinjo, Tamiaki and Tokashiki, Yoshihiro (1997) Mineralogical And Chemical Properties of Manganese Nodules In Java Soils developed From Different Parent Materials. Mineralogical And Chemical Properties of Manganese Nodules In Java Soils developed From Different Parent Materials, 10. pp. 241-257. ISSN 2186-3555
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Abstract
Manganese nodules were found in Java soils which is located in the humid
tropical region and influenced by volcanic environment. The objective of this research
was to study the mineralogy of the soil manganese nodules developed in the different
parent materials. Both samples of manganese nodule and soil were collected from
soil profiles developed from limestone (Semanu), tuff-agglomerate (Patuk), and tuff
(Cikopomayak). Mineral composition of the manganese nodule was identified with
combination of successive selective dissolution and X-ray diffraction. The predominant
soil clay mineral in all samples was kaolinite; while in Semanu soil there was
also intergrade mineral (Vt-Ch); and vermiculite, illite and Vt-Ch were also identified
in Cikopomayak soil. In the manganese nodules, manganese-oxide minerals were
almost amorphous minerals and iron-oxide minerals were goethite. Birnessite was
only present in Semanu, and Mn was concentrated 23 times in this sample . Some
heavy metals were also enriched from the soil to manganese nodule . As for the
similarity in the mineralogy of layer silicate on both manganese nodule and soil, it
was suggested that the manganese nodules were developed in the soil.
Key words: Birnessite, enrichment, different parent materials , goethite, Mn-nodule.
| Item Type: | Article |
|---|---|
| Subjek: | G Geography. Anthropology. Recreation > GE Environmental Sciences |
| Depositing User: | MUHAMMAD NURCHOLIS - |
| Date Deposited: | 31 Jan 2019 07:57 |
| Last Modified: | 31 Jan 2019 07:57 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/17932 |
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