Phlogopite from
Nchisi Island (Chilwa Island; Shirwa Island), Zomba, Southern Region, Malawi

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Predictive Mineralogy

Classification
Locality type:	Island
Species:	Phlogopite
Formula:	KMg₃(AlSi₃O₁₀)(OH)₂
Confirmation
Validity:	Believed Valid
Data
Mineral Data:	Click here to view Phlogopite data
Locality Data:	Click here to view Nchisi Island (Chilwa Island; Shirwa Island), Zomba, Southern Region, Malawi
Data Identifiers
Mindat Occurrence Record ID:	715038
Long-form Identifier:	1:3:715038:8
GUID (UUID V4):	0
Nearest other occurrences of Phlogopite

77.8km (48.3 miles)	ⓘ Kangankunde Carbonatite Complex, Balaka, Southern Region, Malawi
References
Garson, M. S., & Smith, C. W. (1958). Chilwa Island: Geol. Surv. Nyasald., Mem, 1. *SNELLING, N. J. (1965) Age Determinations on Three African Carbonatites. Nature, 205 (4970). 491 doi:10.1038/205491a0* Woolley, A. R. (1969). Some aspects of fenitization with particular reference to Chilwa Island and Kangankunde, Malawi. British Museum (Natural History), Mineralogy, 2, 189-219. Woolley, A. R.; Jones, G. C. (1987) The petrochemistry of the northern part of the Chilwa alkaline province, Malawi, in Alkaline Igneous Rocks. Geological Society, London, Special Publications, 30 (1). 335-355 doi:10.1144/gsl.sp.1987.030.01.16 SIMONETTI, A., BELL, K. (1994) Isotopic and Geochemical Investigation of the Chilwa Island Carbonatite Complex, Malawi: Evidence for a Depleted Mantle Source Region, Liquid Immiscibility, and Open-System Behaviour. Journal of Petrology, 35 (6) 1597-1621 doi:10.1093/petrology/35.6.1597 Eby, G.N., Roden-Tice, M., Krueger, H.L., Ewing, W., Faxon, E.H., Woolley, A.R. (1995) Geochronology and cooling history of the northern part of the Chilwa Alkaline Province, Malawi. Journal of African Earth Sciences, 20 (3) 275-288 doi:10.1016/0899-5362(95)00054-w Berger, Vladimir I.; Singer, Donald A.; Orris, Greta J. (2009) Carbonatites of the World, Explored Deposits of Nb and REE—Database and Grade and Tonnage Models . Open-File Report 2009-1139. US Geological Survey doi:10.3133/ofr20091139

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Phlogopite from Nchisi Island (Chilwa Island; Shirwa Island), Zomba, Southern Region, Malawi

Phlogopite from
Nchisi Island (Chilwa Island; Shirwa Island), Zomba, Southern Region, Malawi