{"_buckets": {"deposit": "00b731e1-eb04-4428-9ed1-6bfa0cfb95e4"}, "_deposit": {"id": "720", "owners": [], "pid": {"revision_id": 0, "type": "recid", "value": "720"}, "status": "published"}, "_oai": {"id": "oai:meral.edu.mm:recid/720", "sets": ["user-um"]}, "communities": ["um"], "control_number": "720", "item_1583103067471": {"attribute_name": "Title", "attribute_value_mlt": [{"subitem_1551255647225": "Style, type and origin of Kyadwinye iron ore deposits in the western margin ofShan Plateau, Central Myanmar", "subitem_1551255648112": "en"}]}, "item_1583103085720": {"attribute_name": "Description", "attribute_value_mlt": [{"interim": "Kyadwinye iron mine is located at Latitude 21° 53\u0027 N and Longitude 96° 32\u0027 20\u0027\u0027 E, Mandalay region, Myanmar. It lies in the western margin of the Shan Plateau within Sibumasu Terrane. Rock units exposed in the area are Paleozoic rocks including Nyaungbaw Formation (Silurian age), Zebingyi Formation (early to middle Devonian age) and Maymyo Formation (middle\r Devonian to Permian age). Iron ores are mainly limonite and hematite with minor amounts of pyrite and magnetite. The deposit mainly forms in Maymyo Formation. Jordan et al., (2017) dated the zircon U-Pb ages of 399 Ma, for a limestone near Pyinoolwin which suggests that the age is consistent with fossil ages of the Middle Devonian Maymyo Formation. The relativity plots of the zircons suggest the provenance has a Gondwana affinity, as the peaks of the zircons confirm the affinity with the Sibumasu Terrane. At mine site, ore deposit entirely overlies on dolomite and sandstone of Maymyo Formation. Large ore boulders may reach about 15 cubic meters in size. Small nodular, concretionary iron ore and float ore also occur. In some places, these iron ores are embedded in reddish brown ferruginous sandy soil and sandy loam layers. Based on the result of borehole data, ore boulders decrease in size from south to north. This is because the fault that separates the two blocks, impounds oxidizing water and enriches iron in the hanging wall block (south), causing more concentration and thickening of the iron deposits. The occurrences of micro fossils (forams?) and ooids which are entirely or partially replaced by interlayered hematite indicate that the iron deposit is primarily of sedimentary origin probably formed at the end of Paleozoic time (Tin Aung Myint, 2002). The porous and soluble nature of Maymyo Formation is the favorable place for the formation of iron deposits on Shan Plateau. Besides, chemical weathering processes leached dolomite and calcite minerals from earlier formed iron deposit, causing the increasing of iron grade in the ore as well as removing of gangue minerals from the ore in order to form the ferric iron oxides as secondary residules. The\r estimated iron ore reserve is 2 million tons with average iron content of 58.5% (Tin Aung Myint \u0026 Mi Mi Ko, 2004). References Jordan Sheppard, Khin Zaw, Charles Makoundi, Ross Large, Tin Aung Myint, Sean Johnson, (2017), U Pb Detrital Zircon and Pyrite Chemistry of Devonian Formations in Mandalay-Pyin Oo Lwin District, Myanmar: Implications for Ocean Chemistry,\r Gold Enrichment and Provenance of Sediments in Sibumasu Terrane. paper read at Myanmar Applied Earth Sciences Association (MAESA) Conference, Novotel Hotel, Myanmar. Tin Aung Myint, (2002), A genetic study on the iron ore deposits at Kyadwinye Mine and its environs, Pyinoolwin Township, MRes thesis (Unpublished), Department of Geology, University of Mandalay. Tin Aung Myint \u0026 Mi Mi Ko (2004) Occurrences of iron ores in Myanmar, research paper read at 4th Anniversary of Yandanabon University Opening. Conference Hall, Yandanabon University, Mandalay City, Myanmar"}]}, "item_1583103108160": {"attribute_name": "Keywords", "attribute_value_mlt": [{"interim": "Sedimentary iron ores"}]}, "item_1583103120197": {"attribute_name": "Files", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_access", "date": [{"dateType": "Available", "dateValue": "2020-05-05"}], "displaytype": "preview", "download_preview_message": "", "file_order": 0, "filename": "Style, type and origin of Kyadwinye iron ore deposits in the western margin ofShan Plateau, Central Myanmar.pdf", "filesize": [{"value": "3250 Kb"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_free", "mimetype": "application/pdf", "size": 3250000.0, "url": {"url": "https://meral.edu.mm/record/720/files/Style, type and origin of Kyadwinye iron ore deposits in the western margin ofShan Plateau, Central Myanmar.pdf"}, "version_id": "ba3a0090-93ad-43d3-92ab-70954d3a9054"}]}, "item_1583103131163": {"attribute_name": "Journal articles", "attribute_value_mlt": [{"subitem_journal_title": "Equatorial Gondwanan History and Early Paleozoic Evolutionary Dynamics"}]}, "item_1583103147082": {"attribute_name": "Conference papaers", "attribute_value_mlt": [{}]}, "item_1583103211336": {"attribute_name": "Books/reports/chapters", "attribute_value_mlt": [{}]}, "item_1583103233624": {"attribute_name": "Thesis/dissertations", "attribute_value_mlt": [{"subitem_supervisor(s)": []}]}, "item_1583105942107": {"attribute_name": "Authors", "attribute_value_mlt": [{"subitem_authors": [{"subitem_authors_fullname": "Tin Aung Myint"}, {"subitem_authors_fullname": "Mi Mi Ko"}]}]}, "item_1583108359239": {"attribute_name": "Upload type", "attribute_value_mlt": [{"interim": "Publication"}]}, "item_1583108428133": {"attribute_name": "Publication type", "attribute_value_mlt": [{"interim": "Conference paper"}]}, "item_1583159729339": {"attribute_name": "Publication date", "attribute_value": "2018"}, "item_1583159847033": {"attribute_name": "Identifier", "attribute_value": "https://umoar.mu.edu.mm/handle/123456789/441"}, "item_title": "Style, type and origin of Kyadwinye iron ore deposits in the western margin ofShan Plateau, Central Myanmar", "item_type_id": "21", "owner": "1", "path": ["1582967109396"], "permalink_uri": "http://hdl.handle.net/20.500.12678/0000000720", "pubdate": {"attribute_name": "Deposited date", "attribute_value": "2020-03-05"}, "publish_date": "2020-03-05", "publish_status": "0", "recid": "720", "relation": {}, "relation_version_is_last": true, "title": ["Style, type and origin of Kyadwinye iron ore deposits in the western margin ofShan Plateau, Central Myanmar"], "weko_shared_id": -1}