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Biotite from
Ilomba intrusion, Songwe Complex, Chitipa, Northern Region, Malawi


Locality type:Intrusion
Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Age information
Maximum recorded age:508 ± 12 Ma
Minimum recorded age:490 ± 12 Ma
Sample ages:
Recorded ageGeologic TimeSampleDating method
1508 ± 12 to 490 ± 12 MaCambrian - K-Ar
Sample references:
1 -
Bloomfield, K., Deans, T. & Wells, M.K. (1981). The Ilomba alkaline complex, northern Malawi and associated uranium-niobium mineralisation. Overseas Geology and Mineral Resources, 57, 1-21.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Ilomba intrusion, Songwe Complex, Chitipa, Northern Region, Malawi
Data Identifiers
Mindat Occurrence Record ID:217028
Long-form Identifier:1:3:217028:2
GUID (UUID V4):0
Nearest other occurrences of Biotite
5.5km (3.4 miles) ⓘUlindi intrusion, Songwe Complex, Chitipa, Northern Region, Malawi
9.9km (6.1 miles) ⓘSongwe Complex, Chitipa, Northern Region, Malawi
57.0km (35.4 miles) ⓘPanda Hill, Mbeya Rural District, Mbeya Region, Tanzania
97.6km (60.7 miles) ⓘMbozi complex, Songwe Region, Tanzania
References
 
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