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Chinduzi Intrusion, Mongolowe-Chaone-Chikala Complexes, Machinga, Southern Region, Malawii
Regional Level Types
Chinduzi IntrusionIntrusion
Mongolowe-Chaone-Chikala ComplexesGroup of Complexs
MachingaDistrict
Southern RegionRegion
MalawiCountry

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Latitude & Longitude (WGS84):
15° 10' South , 35° 13' East
Latitude & Longitude (decimal):
-15.16667,35.21667
GeoHash:
G#: kv319qgzz
GRN:
S11E24
Type:
Intrusion
Köppen climate type:
Aw : Tropical savanna, wet
Nearest Settlements:
PlacePopulationDistance
Machinga1,418 (2011)8.9km
Liwonde22,469 (2013)11.2km
Zomba80,932 (2011)26.7km
Balaka18,902 (2011)34.9km
Mindat Locality ID:
407496
Long-form identifier:
mindat:1:2:407496:3
GUID (UUID V4):
0


Chinduzi is situated at the western end of Mongolowe-Chaone-Chikala Complexes, Machinga, Southern Region, Malawi.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


5 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Aegirine
Formula: NaFe3+Si2O6
References:
Bloomfield, K. (1965). The geology of the Zomba area. Geological Survey Dept. Bulletin, (16).
Cahen, L., & Snelling, N. J. (1966). The geochronology of equatorial Africa. North-Holland Publishing Company.
Woolley, Alan R., Garth Platt, R. (1986) The mineralogy of nepheline syenite complexes from the northern part of the Chilwa Province, Malawi. Mineralogical Magazine, 50 (358) 597-610 doi:10.1180/minmag.1986.050.358.05
Woolley, A. R., & Jones, G. C. (1987). The petrochemistry of the northern part of the Chilwa alkaline province, Malawi. Geological Society, London, Special Publications, 30(1), 335-355. doi.org/10.1144/GSL.SP.1987.030.01.16
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
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
References:
Bloomfield, K. (1965). The geology of the Zomba area. Geological Survey Dept. Bulletin, (16).
Cahen, L., & Snelling, N. J. (1966). The geochronology of equatorial Africa. North-Holland Publishing Company.
Woolley, Alan R., Garth Platt, R. (1986) The mineralogy of nepheline syenite complexes from the northern part of the Chilwa Province, Malawi. Mineralogical Magazine, 50 (358) 597-610 doi:10.1180/minmag.1986.050.358.05
Woolley, A. R., & Jones, G. C. (1987). The petrochemistry of the northern part of the Chilwa alkaline province, Malawi. Geological Society, London, Special Publications, 30(1), 335-355. doi.org/10.1144/GSL.SP.1987.030.01.16
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
ⓘ Diopside
Formula: CaMgSi2O6
References:
Bloomfield, K. (1965). The geology of the Zomba area. Geological Survey Dept. Bulletin, (16).
Cahen, L., & Snelling, N. J. (1966). The geochronology of equatorial Africa. North-Holland Publishing Company.
Woolley, Alan R., Garth Platt, R. (1986) The mineralogy of nepheline syenite complexes from the northern part of the Chilwa Province, Malawi. Mineralogical Magazine, 50 (358) 597-610 doi:10.1180/minmag.1986.050.358.05
Woolley, A. R., & Jones, G. C. (1987). The petrochemistry of the northern part of the Chilwa alkaline province, Malawi. Geological Society, London, Special Publications, 30(1), 335-355. doi.org/10.1144/GSL.SP.1987.030.01.16
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
ⓘ Diopside var. Salite
Formula: CaMgSi2O6
References:
Bloomfield, K. (1965). The geology of the Zomba area. Geological Survey Dept. Bulletin, (16).
Cahen, L., & Snelling, N. J. (1966). The geochronology of equatorial Africa. North-Holland Publishing Company.
Woolley, Alan R., Garth Platt, R. (1986) The mineralogy of nepheline syenite complexes from the northern part of the Chilwa Province, Malawi. Mineralogical Magazine, 50 (358) 597-610 doi:10.1180/minmag.1986.050.358.05
Woolley, A. R., & Jones, G. C. (1987). The petrochemistry of the northern part of the Chilwa alkaline province, Malawi. Geological Society, London, Special Publications, 30(1), 335-355. doi.org/10.1144/GSL.SP.1987.030.01.16
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
ⓘ Katophorite
Formula: {Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
References:
Bloomfield, K. (1965). The geology of the Zomba area. Geological Survey Dept. Bulletin, (16).
Cahen, L., & Snelling, N. J. (1966). The geochronology of equatorial Africa. North-Holland Publishing Company.
Woolley, Alan R., Garth Platt, R. (1986) The mineralogy of nepheline syenite complexes from the northern part of the Chilwa Province, Malawi. Mineralogical Magazine, 50 (358) 597-610 doi:10.1180/minmag.1986.050.358.05
Woolley, A. R., & Jones, G. C. (1987). The petrochemistry of the northern part of the Chilwa alkaline province, Malawi. Geological Society, London, Special Publications, 30(1), 335-355. doi.org/10.1144/GSL.SP.1987.030.01.16
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
ⓘ 'Mica Group'
References:
Bloomfield, K. (1965). The geology of the Zomba area. Geological Survey Dept. Bulletin, (16).
Cahen, L., & Snelling, N. J. (1966). The geochronology of equatorial Africa. North-Holland Publishing Company.
Woolley, Alan R., Garth Platt, R. (1986) The mineralogy of nepheline syenite complexes from the northern part of the Chilwa Province, Malawi. Mineralogical Magazine, 50 (358) 597-610 doi:10.1180/minmag.1986.050.358.05
Woolley, A. R., & Jones, G. C. (1987). The petrochemistry of the northern part of the Chilwa alkaline province, Malawi. Geological Society, London, Special Publications, 30(1), 335-355. doi.org/10.1144/GSL.SP.1987.030.01.16
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
ⓘ Nepheline
Formula: Na3K(Al4Si4O16)
References:
Bloomfield, K. (1965). The geology of the Zomba area. Geological Survey Dept. Bulletin, (16).
Cahen, L., & Snelling, N. J. (1966). The geochronology of equatorial Africa. North-Holland Publishing Company.
Woolley, Alan R., Garth Platt, R. (1986) The mineralogy of nepheline syenite complexes from the northern part of the Chilwa Province, Malawi. Mineralogical Magazine, 50 (358) 597-610 doi:10.1180/minmag.1986.050.358.05
Woolley, A. R., & Jones, G. C. (1987). The petrochemistry of the northern part of the Chilwa alkaline province, Malawi. Geological Society, London, Special Publications, 30(1), 335-355. doi.org/10.1144/GSL.SP.1987.030.01.16
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
ⓘ 'Pyroxene Group'
Formula: ADSi2O6
References:
Bloomfield, K. (1965). The geology of the Zomba area. Geological Survey Dept. Bulletin, (16).
Cahen, L., & Snelling, N. J. (1966). The geochronology of equatorial Africa. North-Holland Publishing Company.
Woolley, Alan R., Garth Platt, R. (1986) The mineralogy of nepheline syenite complexes from the northern part of the Chilwa Province, Malawi. Mineralogical Magazine, 50 (358) 597-610 doi:10.1180/minmag.1986.050.358.05
Woolley, A. R., & Jones, G. C. (1987). The petrochemistry of the northern part of the Chilwa alkaline province, Malawi. Geological Society, London, Special Publications, 30(1), 335-355. doi.org/10.1144/GSL.SP.1987.030.01.16
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
ⓘ Titanite
Formula: CaTi(SiO4)O
References:
Bloomfield, K. (1965). The geology of the Zomba area. Geological Survey Dept. Bulletin, (16).
Cahen, L., & Snelling, N. J. (1966). The geochronology of equatorial Africa. North-Holland Publishing Company.
Woolley, Alan R., Garth Platt, R. (1986) The mineralogy of nepheline syenite complexes from the northern part of the Chilwa Province, Malawi. Mineralogical Magazine, 50 (358) 597-610 doi:10.1180/minmag.1986.050.358.05
Woolley, A. R., & Jones, G. C. (1987). The petrochemistry of the northern part of the Chilwa alkaline province, Malawi. Geological Society, London, Special Publications, 30(1), 335-355. doi.org/10.1144/GSL.SP.1987.030.01.16
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

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 9 - Silicates
ⓘTitanite9.AG.15CaTi(SiO4)O
ⓘDiopside9.DA.15CaMgSi2O6
ⓘvar. Salite9.DA.15CaMgSi2O6
ⓘAegirine9.DA.25NaFe3+Si2O6
ⓘKatophorite9.DE.20{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
ⓘNepheline9.FA.05Na3K(Al4Si4O16)
Unclassified
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Mica Group'-
ⓘ'Pyroxene Group'-ADSi2O6

List of minerals for each chemical element

HHydrogen
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
OOxygen
Oⓘ AegirineNaFe3+Si2O6
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ DiopsideCaMgSi2O6
Oⓘ NephelineNa3K(Al4Si4O16)
Oⓘ TitaniteCaTi(SiO4)O
Oⓘ Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
Oⓘ Pyroxene GroupADSi2O6
Oⓘ Diopside var. SaliteCaMgSi2O6
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
NaSodium
Naⓘ AegirineNaFe3+Si2O6
Naⓘ NephelineNa3K(Al4Si4O16)
Naⓘ Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
MgMagnesium
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgⓘ DiopsideCaMgSi2O6
Mgⓘ Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
Mgⓘ Diopside var. SaliteCaMgSi2O6
AlAluminium
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ NephelineNa3K(Al4Si4O16)
Alⓘ Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
SiSilicon
Siⓘ AegirineNaFe3+Si2O6
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ DiopsideCaMgSi2O6
Siⓘ NephelineNa3K(Al4Si4O16)
Siⓘ TitaniteCaTi(SiO4)O
Siⓘ Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
Siⓘ Pyroxene GroupADSi2O6
Siⓘ Diopside var. SaliteCaMgSi2O6
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ NephelineNa3K(Al4Si4O16)
CaCalcium
Caⓘ DiopsideCaMgSi2O6
Caⓘ TitaniteCaTi(SiO4)O
Caⓘ Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
Caⓘ Diopside var. SaliteCaMgSi2O6
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiⓘ TitaniteCaTi(SiO4)O
FeIron
Feⓘ AegirineNaFe3+Si2O6
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2

Geochronology

Mineralization age: Early/Lower Cretaceous : 133.5 ± 14.6 Ma to 116 ± 6 Ma

Important note: This table is based only on rock and mineral ages recorded on mindat.org for this locality and is not necessarily a complete representation of the geochronology, but does give an indication of possible mineralization events relevant to this locality. As more age information is added this table may expand in the future. A break in the table simply indicates a lack of data entered here, not necessarily a break in the geologic sequence. Grey background entries are from different, related, localities.

Geologic TimeRocks, Minerals and Events
Phanerozoic
 Mesozoic
  Cretaceous
   Early/Lower Cretaceous
ⓘ Biotite116 ± 6 Ma
ⓘ Titanite (youngest age)133.1 ± 18.5 Ma
ⓘ Titanite (oldest age)133.5 ± 14.6 Ma

Other Regions, Features and Areas containing this locality

AfricaContinent
African Plate
Somali PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

www.researchgate.net (n.d.) https://www.researchgate.net/profile/Alan_Woolley/publication/238438296_The_Mineralogy_of_Nepheline_Syenite_Complexes_from_the_Northern_Part_of_the_Chilwa_Province_Malawi/links/54d0f4170cf298d6566957c7.pdf [Woolley & Platt, 1986]
Bloomfield, K. (1965) The geology of the Zomba area. Geological Survey Department Bulletin 16.
Cahen, L., & Snelling, N. J. (1966). The geochronology of equatorial Africa. North-Holland Publishing Company.
Woolley, Alan R., Garth Platt, R. (1986) The mineralogy of nepheline syenite complexes from the northern part of the Chilwa Province, Malawi. Mineralogical Magazine, 50 (358) 597-610 doi:10.1180/minmag.1986.050.358.05
Woolley, A. R., & Jones, G. C. (1987). The petrochemistry of the northern part of the Chilwa alkaline province, Malawi. Geological Society, London, Special Publications, 30(1), 335-355. doi.org/10.1144/GSL.SP.1987.030.01.16
Eby, G.N., Roden-Tice, M., Kreuger, 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: 275-288. doi.org/10.1016/0899-5362(95)00054-W
Woolley, A. R. (2001) Alkaline Rocks and Carbonatites of the World, Part 3: Africa - Alkaline Rocks and Carbonatites of the World. The Geological Society of London.p.167
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