| Locality type: | Island |
| Classification |
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| Species: | 'Pyrochlore Group' (not an IMA approved species) |
| Formula: | A2Nb2(O,OH)6Z |
| Confirmation |
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|
| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Pyrochlore Group data |
| Locality Data: | Click here to view Nchisi Island (Chilwa Island; Shirwa Island), Zomba, Southern Region, Malawi |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 143574 |
| Long-form Identifier: | 1:3:143574:0 |
| GUID (UUID V4): | 78ab8ed8-c06b-452f-8434-6c592d1ad9d2 |
| Nearest other occurrences of Pyrochlore Group |
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| 11.9km (7.4 miles) | ⓘMpyupyu Hill, Zomba, Southern Region, Malawi |
| 31.9km (19.8 miles) | ⓘTundulu Complex, Phalombe, Southern Region, Malawi |
| 32.9km (20.5 miles) | ⓘMount Malosa, Zomba, Southern Region, Malawi |
| 33.8km (21.0 miles) | ⓘNkalonje Hills, Phalombe, Southern Region, Malawi |
| 47.4km (29.4 miles) | ⓘSongwe Hill REE Project (Songwe Hill carbonatite), Phalombe, Southern Region, Malawi |
| 47.6km (29.6 miles) | ⓘJunguni Hill, Machinga, Southern Region, Malawi |
| 53.1km (33.0 miles) | ⓘMichese Intrusion, Phalombe, Southern Region, Malawi |
| 77.8km (48.3 miles) | ⓘKangankunde Carbonatite Complex, Balaka, Southern Region, Malawi |
| 95.4km (59.3 miles) | ⓘNsengwa Hill, Neno, Southern Region, Malawi |
| References |
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Eby, G.N., Roden-Tice, M., Kreuger, H.L., Ewing, W., Faxon, E.H., and Woolley, A.R. (1995): Geochronology and cooling history of the northern part of the Chilwa alkaline province, Malawi. Journal Afr. Earth Sci. 20, 275-288. doi.org/10.1016/0899-5362(95)00054-W Dowman, E., Wall, F., Treloar, P. J., Rankin, A. H., & Corkhill, C. (2017). Rare-earth mobility as a result of multiple phases of fluid activity in fenite around the Chilwa Island Carbonatite, Malawi. Mineralogical Magazine, 81(6), 1367-1395. |
