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Nchisi Island (Chilwa Island; Shirwa Island), Zomba, Southern Region, Malawii
Regional Level Types
Nchisi Island (Chilwa Island; Shirwa Island)Island
ZombaDistrict
Southern RegionRegion
MalawiCountry

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Key
Latitude & Longitude (WGS84):
15° 19' 54'' South , 35° 36' 7'' East
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:


Early Cretaceous carbonatite, hosted in sövite.

Regions containing this locality

Somali Plate (Somalia Plate)Tectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


30 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and 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
Reference: 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.
'Albite-Anorthite Series'
Reference: 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.
Andradite
Formula: Ca3Fe3+2(SiO4)3
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
Andradite var: Melanite
Formula: Ca3Fe3+2(SiO4)3
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139; 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.
'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Reference: Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.; 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.
'Apatite var: Carbonate-rich Apatite'
Reference: 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.
Baryte
Formula: BaSO4
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139; 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.
'Bastnäsite'
Reference: Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.; 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.
Bastnäsite-(Ce)
Formula: Ce(CO3)F
Reference: 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.
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
Calcite
Formula: CaCO3
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139; 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.
'Columbite-(Fe)-Columbite-(Mn) Series'
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
'Feldspar Group'
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
'Feldspar Group var: Perthite'
Reference: 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.
'Florencite'
Reference: Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.; 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.
Fluorapatite
Formula: Ca5(PO4)3F
Reference: 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.
Fluorite
Formula: CaF2
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
Galena
Formula: PbS
Reference: 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.
Goyazite
Formula: SrAl3(PO4)(PO3OH)(OH)6
Reference: 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.
Ilmenite
Formula: Fe2+TiO3
Reference: 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.
'K Feldspar'
Reference: 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.
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.; 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.
Microcline
Formula: K(AlSi3O8)
Reference: Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.
Monazite-(Ce)
Formula: Ce(PO4)
Reference: 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.
Monazite-(La)
Formula: La(PO4)
Reference: 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.
Orthoclase
Formula: K(AlSi3O8)
Reference: 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.
'Parisite'
Reference: 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.
Parisite-(Ce)
Formula: CaCe2(CO3)3F2
Reference: 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.
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
Pyrite
Formula: FeS2
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139; 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.
'Pyrochlore'
Reference: 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.
'Pyrochlore Group'
Formula: A2Nb2(O,OH)6Z
Reference: Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.
'Pyroxene Group'
Reference: 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.
Quartz
Formula: SiO2
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139; 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.
Richterite
Formula: {Na}{NaCa}{Mg5}(Si8O22)(OH)2
Reference: 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.
Riebeckite
Formula: ◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
Reference: 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.
Rutile
Formula: TiO2
Reference: Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.; 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.
Siderite
Formula: FeCO3
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
Spinel
Formula: MgAl2O4
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
Strontianite
Formula: SrCO3
Reference: 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.
'Synchysite'
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139; 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.
Synchysite-(Ce)
Formula: CaCe(CO3)2F
Reference: 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.
'Tantalite'
Formula: (Mn,Fe)(Ta,Nb)2O6
Reference: Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.
Titanite
Formula: CaTi(SiO4)O
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
'Xenotime'
Reference: 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.
Xenotime-(Y)
Formula: Y(PO4)
Reference: 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.
Zircon
Formula: Zr(SiO4)
Reference: 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.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Galena2.CD.10PbS
Pyrite2.EB.05aFeS2
Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Ilmenite4.CB.05Fe2+TiO3
Magnetite4.BB.05Fe2+Fe3+2O4
'Pyrochlore Group'4.00.A2Nb2(O,OH)6Z
Quartz4.DA.05SiO2
Rutile4.DB.05TiO2
Spinel4.BB.05MgAl2O4
Group 5 - Nitrates and Carbonates
Ankerite5.AB.10Ca(Fe2+,Mg)(CO3)2
Bastnäsite-(Ce)5.BD.20aCe(CO3)F
Calcite5.AB.05CaCO3
Parisite-(Ce)5.BD.20bCaCe2(CO3)3F2
Siderite5.AB.05FeCO3
Strontianite5.AB.15SrCO3
Synchysite-(Ce)5.BD.20cCaCe(CO3)2F
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Baryte7.AD.35BaSO4
Group 8 - Phosphates, Arsenates and Vanadates
Fluorapatite8.BN.05Ca5(PO4)3F
Goyazite8.BL.10SrAl3(PO4)(PO3OH)(OH)6
Monazite-(Ce)8.AD.50Ce(PO4)
Monazite-(La)8.AD.50La(PO4)
Xenotime-(Y)8.AD.35Y(PO4)
Group 9 - Silicates
Aegirine9.DA.25NaFe3+Si2O6
Andradite9.AD.25Ca3Fe3+2(SiO4)3
var: Melanite9.AD.25Ca3Fe3+2(SiO4)3
Microcline9.FA.30K(AlSi3O8)
Orthoclase9.FA.30K(AlSi3O8)
Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
Richterite9.DE.20{Na}{NaCa}{Mg5}(Si8O22)(OH)2
Riebeckite9.DE.25◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
Titanite9.AG.15CaTi(SiO4)O
Zircon9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'var: Carbonate-rich Apatite'-Ca5(PO4)3(Cl/F/OH)
'Bastnäsite'-
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Columbite-(Fe)-Columbite-(Mn) Series'-
'Feldspar Group'-
'var: Perthite'-
'Florencite'-
'K Feldspar'-
'Parisite'-
'Pyrochlore'-
'Pyroxene Group'-
'Synchysite'-
'Tantalite'-(Mn,Fe)(Ta,Nb)2O6
'Xenotime'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Ilmenite4.3.5.1Fe2+TiO3
AX2
Rutile4.4.1.1TiO2
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Spinel7.2.1.1MgAl2O4
Group 8 - MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
A2B2O6(O,OH,F)
'Pyrochlore Group'8.2.1.1A2Nb2(O,OH)6Z
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Siderite14.1.1.3FeCO3
Strontianite14.1.3.3SrCO3
AB(XO3)2
Ankerite14.2.1.2Ca(Fe2+,Mg)(CO3)2
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Bastnäsite-(Ce)16a.1.1.1Ce(CO3)F
Parisite-(Ce)16a.1.5.1CaCe2(CO3)3F2
Synchysite-(Ce)16a.1.3.1CaCe(CO3)2F
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 38 - ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
AXO4
Monazite-(Ce)38.4.3.1Ce(PO4)
Monazite-(La)38.4.3.2La(PO4)
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Fluorapatite41.8.1.1Ca5(PO4)3F
Group 42 - HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq·xH2O
Goyazite42.7.3.3SrAl3(PO4)(PO3OH)(OH)6
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Andradite51.4.3b.1Ca3Fe3+2(SiO4)3
Insular SiO4 Groups Only with cations in >[6] coordination
Zircon51.5.2.1Zr(SiO4)
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Aegirine65.1.3c.2NaFe3+Si2O6
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Richterite66.1.3b.9{Na}{NaCa}{Mg5}(Si8O22)(OH)2
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Phlogopite71.2.2b.1KMg3(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Microcline76.1.1.5K(AlSi3O8)
Orthoclase76.1.1.1K(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
'Albite-Anorthite Series'-
Andradite
var: Melanite
-Ca3Fe3+2(SiO4)3
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'var: Carbonate-rich Apatite'-Ca5(PO4)3(Cl/F/OH)
'Bastnäsite'-
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Columbite-(Fe)-Columbite-(Mn) Series'-
'Feldspar Group'-
'var: Perthite'-
'Florencite'-
'K Feldspar'-
'Parisite'-
'Pyrochlore'-
'Pyroxene Group'-
Riebeckite-◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
'Synchysite'-
'Tantalite'-(Mn,Fe)(Ta,Nb)2O6
'Xenotime'-
Xenotime-(Y)-Y(PO4)

List of minerals for each chemical element

HHydrogen
H Pyrochlore GroupA2Nb2(O,OH)6Z
H ApatiteCa5(PO4)3(Cl/F/OH)
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
H PhlogopiteKMg3(AlSi3O10)(OH)2
H GoyaziteSrAl3(PO4)(PO3OH)(OH)6
H Richterite{Na}{NaCa}{Mg5}(Si8O22)(OH)2
H Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
CCarbon
C AnkeriteCa(Fe2+,Mg)(CO3)2
C SideriteFeCO3
C CalciteCaCO3
C Bastnäsite-(Ce)Ce(CO3)F
C Parisite-(Ce)CaCe2(CO3)3F2
C StrontianiteSrCO3
C Synchysite-(Ce)CaCe(CO3)2F
OOxygen
O Pyrochlore GroupA2Nb2(O,OH)6Z
O AnkeriteCa(Fe2+,Mg)(CO3)2
O SideriteFeCO3
O ApatiteCa5(PO4)3(Cl/F/OH)
O RutileTiO2
O Tantalite(Mn,Fe)(Ta,Nb)2O6
O MagnetiteFe2+Fe23+O4
O MicroclineK(AlSi3O8)
O BaryteBaSO4
O TitaniteCaTi(SiO4)O
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
O CalciteCaCO3
O Andradite (var: Melanite)Ca3Fe23+(SiO4)3
O PhlogopiteKMg3(AlSi3O10)(OH)2
O QuartzSiO2
O SpinelMgAl2O4
O AndraditeCa3Fe23+(SiO4)3
O AegirineNaFe3+Si2O6
O Bastnäsite-(Ce)Ce(CO3)F
O FluorapatiteCa5(PO4)3F
O GoyaziteSrAl3(PO4)(PO3OH)(OH)6
O IlmeniteFe2+TiO3
O Monazite-(La)La(PO4)
O Monazite-(Ce)Ce(PO4)
O OrthoclaseK(AlSi3O8)
O Parisite-(Ce)CaCe2(CO3)3F2
O Richterite{Na}{NaCa}{Mg5}(Si8O22)(OH)2
O Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
O StrontianiteSrCO3
O Synchysite-(Ce)CaCe(CO3)2F
O Xenotime-(Y)Y(PO4)
O ZirconZr(SiO4)
FFluorine
F ApatiteCa5(PO4)3(Cl/F/OH)
F FluoriteCaF2
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
F Bastnäsite-(Ce)Ce(CO3)F
F FluorapatiteCa5(PO4)3F
F Parisite-(Ce)CaCe2(CO3)3F2
F Synchysite-(Ce)CaCe(CO3)2F
NaSodium
Na AegirineNaFe3+Si2O6
Na Richterite{Na}{NaCa}{Mg5}(Si8O22)(OH)2
Na Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
MgMagnesium
Mg AnkeriteCa(Fe2+,Mg)(CO3)2
Mg BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Mg PhlogopiteKMg3(AlSi3O10)(OH)2
Mg SpinelMgAl2O4
Mg Richterite{Na}{NaCa}{Mg5}(Si8O22)(OH)2
AlAluminium
Al MicroclineK(AlSi3O8)
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Al PhlogopiteKMg3(AlSi3O10)(OH)2
Al SpinelMgAl2O4
Al GoyaziteSrAl3(PO4)(PO3OH)(OH)6
Al OrthoclaseK(AlSi3O8)
SiSilicon
Si MicroclineK(AlSi3O8)
Si TitaniteCaTi(SiO4)O
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Si Andradite (var: Melanite)Ca3Fe23+(SiO4)3
Si PhlogopiteKMg3(AlSi3O10)(OH)2
Si QuartzSiO2
Si AndraditeCa3Fe23+(SiO4)3
Si AegirineNaFe3+Si2O6
Si OrthoclaseK(AlSi3O8)
Si Richterite{Na}{NaCa}{Mg5}(Si8O22)(OH)2
Si Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Si ZirconZr(SiO4)
PPhosphorus
P ApatiteCa5(PO4)3(Cl/F/OH)
P FluorapatiteCa5(PO4)3F
P GoyaziteSrAl3(PO4)(PO3OH)(OH)6
P Monazite-(La)La(PO4)
P Monazite-(Ce)Ce(PO4)
P Xenotime-(Y)Y(PO4)
SSulfur
S BaryteBaSO4
S PyriteFeS2
S GalenaPbS
ClChlorine
Cl ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
K MicroclineK(AlSi3O8)
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
K PhlogopiteKMg3(AlSi3O10)(OH)2
K OrthoclaseK(AlSi3O8)
CaCalcium
Ca AnkeriteCa(Fe2+,Mg)(CO3)2
Ca ApatiteCa5(PO4)3(Cl/F/OH)
Ca FluoriteCaF2
Ca TitaniteCaTi(SiO4)O
Ca CalciteCaCO3
Ca Andradite (var: Melanite)Ca3Fe23+(SiO4)3
Ca AndraditeCa3Fe23+(SiO4)3
Ca FluorapatiteCa5(PO4)3F
Ca Parisite-(Ce)CaCe2(CO3)3F2
Ca Richterite{Na}{NaCa}{Mg5}(Si8O22)(OH)2
Ca Synchysite-(Ce)CaCe(CO3)2F
TiTitanium
Ti RutileTiO2
Ti TitaniteCaTi(SiO4)O
Ti IlmeniteFe2+TiO3
MnManganese
Mn Tantalite(Mn,Fe)(Ta,Nb)2O6
FeIron
Fe AnkeriteCa(Fe2+,Mg)(CO3)2
Fe SideriteFeCO3
Fe Tantalite(Mn,Fe)(Ta,Nb)2O6
Fe MagnetiteFe2+Fe23+O4
Fe PyriteFeS2
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Fe Andradite (var: Melanite)Ca3Fe23+(SiO4)3
Fe AndraditeCa3Fe23+(SiO4)3
Fe AegirineNaFe3+Si2O6
Fe IlmeniteFe2+TiO3
Fe Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
SrStrontium
Sr GoyaziteSrAl3(PO4)(PO3OH)(OH)6
Sr StrontianiteSrCO3
YYttrium
Y Xenotime-(Y)Y(PO4)
ZrZirconium
Zr ZirconZr(SiO4)
NbNiobium
Nb Pyrochlore GroupA2Nb2(O,OH)6Z
Nb Tantalite(Mn,Fe)(Ta,Nb)2O6
BaBarium
Ba BaryteBaSO4
LaLanthanum
La Monazite-(La)La(PO4)
CeCerium
Ce Bastnäsite-(Ce)Ce(CO3)F
Ce Monazite-(Ce)Ce(PO4)
Ce Parisite-(Ce)CaCe2(CO3)3F2
Ce Synchysite-(Ce)CaCe(CO3)2F
TaTantalum
Ta Tantalite(Mn,Fe)(Ta,Nb)2O6
PbLead
Pb GalenaPbS

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
- Woolley, A.R. (1987): Lithosphere metasomatism and the petrogenesis of the Chilwa Province of alkaline igneous rocks and carbonatites, Malawi. Journal Afr. Earth Sci. 6, 891-898.
- 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.
- Orris, G.J., and Grauch, R.I. (2002): Rare earth element mines, deposits, and occurrences. USGS Open-File Report 02-189.
- Berger, V.I., Singer, D.A., and Orris, G.J. (2009): Carbonatites of the World. Explored Deposits of Nb and REE - Database and Grade and Tonnage Models. USGS Open-File Report 09-1139.
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.


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