Home Page About Mindat The Mindat Manual History of Mindat Copyright Status Who We Are Our Science Mindat Newsletter [Free Download]Contact Us

Donate to Mindat Sponsor a Page Corporate Sponsorship Sponsored Pages

Learning Center What Is a Mineral?The Most Common Minerals on Earth Information for Educators Mindat Articles Mindat Newsletter [Free Download]The Elements The Mineral Quiz

Search Form Minerals by Properties Minerals by Chemistry Mineral Visual Explorer Advanced Locality Search Random Mineral Random Locality Search by minID Minerals by Country Alphabetical Mineral Index Alphabetical Locality Search Mineral Association Search List of Countries Localities Near Me Photo Search Search Articles Search Glossary The Rock H. Currier Digital Library More Search Options

The Mindat Manual Add a New Photo Rate Photos Locality Edit Report Coordinate Completion Report Add Glossary Item

Minerals Petrology Fossils Meteorites Geologic Time

Mining Companies Statistics Mineral Museums Clubs & Organizations Mineral Shows & Events Device Settings Time Machine

Read Discussions Identification Request

Photo Search Photo Galleries Search by Colour Photo Colour Explorer New Photos Today New Photos Yesterday Members' Photo Galleries Past Photo of the Day Gallery Photography

Nchisi Island (Chilwa Island; Shirwa Island), Zomba, Southern Region, Malawi i
Regional Level Types
Nchisi Island (Chilwa Island; Shirwa Island) Island
Zomba District
Southern Region Region
Malawi Country

Regional Level Types
Nchisi Island (Chilwa Island; Shirwa Island)	Island
Zomba	District
Southern Region	Region
Malawi	Country

This page is currently not sponsored. Click here to sponsor this page.

Photos Maps Search

Standard

Specimen Photos (1)Photos by Color Add Photo

Map Pages Nearest Localities

Mineral Search Similar Localities Nearest Localities Predictive Mineralogy Search Google

Baryte

Nchisi Island, Zomba, Southern Region, Malawi

Baryte

Nchisi Island, Zomba, Southern Region, Malawi

Baryte

Nchisi Island, Zomba, Southern Region, Malawi

Type:

Island

Mindat Locality ID:

26432

Long-form identifier:

mindat:1:2:26432:8

GUID (UUID V4):

Other Languages:

View 3 more...

French:

Chisi Island, District de Zomba, Région Sud, Malawi

German:

Chisi Island, Southern Region, Malawi

Italian:

isola Chisi, Distretto di Zomba, Regione Meridionale, Malawi

Russian:

Чиси, Южная провинция, Малави

Simplified Chinese:

奇西島, 松巴縣, 南部区, 马拉维

Spanish:

Isla Chisi, Distrito de Zomba, Región del Sur, Malaui

Dutch:

Chisi Island, Zomba, Southern, Malawi

Georgian:

ჩისი, ზომბის რაიონი, მალავის სამხრეთი რეგიონი, მალავი

Japanese:

チシ島, 南部州, マラウイ

Early Cretaceous carbonatite, hosted in sövite.

Soils of the summit plateau and several areas around the complex have been shown to contain significant concentrations of pyrochlore and Nb also occurrs in rutile and titanite. These soils generally contain > 5% apatite (Garson & Smith 1969).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

ⓘ 'Amphibole Supergroup'

ⓘ 'var. Carbonate-rich Apatite'

ⓘ 'Clinopyroxene Subgroup'

ⓘ 'Columbite-(Fe)-Columbite-(Mn) Series'

ⓘ 'Fayalite-Forsterite Series'

ⓘ 'Hornblende Root Name Group'

ⓘ 'Rhombohedral Carbonate'

36 valid minerals.

Rock Types Recorded

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Aegirine

Formula: NaFe³⁺Si₂O₆

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

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.

ⓘ Aegirine-augite

Formula: (Na_aCa_bFe²⁺_cMg_d)(Fe³⁺_eAl_fFe²⁺_gMg_h)Si₂O₆

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.

ⓘ Albite

Formula: Na(AlSi₃O₈)

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.

ⓘ Albite var. Andesine

Formula: (Na,Ca)[Al(Si,Al)Si₂O₈]

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.

ⓘ Albite var. Oligoclase

Formula: (Na,Ca)[Al(Si,Al)Si₂O₈]

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.

ⓘ 'Amphibole Supergroup'

Formula: AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂

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.

ⓘ Andradite

Formula: Ca₃Fe³⁺₂(SiO₄)₃

References:

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

ⓘ Andradite var. Melanite

Formula: Ca₃Fe³⁺₂(SiO₄)₃

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.

ⓘ Ankerite

Formula: Ca(Fe²⁺,Mg)(CO₃)₂

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.

ⓘ 'Apatite'

Formula: Ca₅(PO₄)₃A

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.

Orris, Greta J., Grauch, Richard I. (2002) Rare Earth Element Mines, Deposits, and Occurrences. Open-File Report 2002-189. US Geological Survey doi:10.3133/ofr02189

ⓘ 'Apatite var. Carbonate-rich Apatite'

Formula: Ca₅(PO₄)₃(Cl/F/OH)

References:

ⓘ Augite

Formula: (Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆

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.

ⓘ Baryte

Formula: BaSO₄

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.

ⓘ 'Bastnäsite'

Formula: (Ce/Nd/Y/REE)(CO₃)F

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.

Orris, Greta J., Grauch, Richard I. (2002) Rare Earth Element Mines, Deposits, and Occurrences. Open-File Report 2002-189. US Geological Survey doi:10.3133/ofr02189

ⓘ Bastnäsite-(Ce)

Formula: Ce(CO₃)F

References:

ⓘ 'Biotite'

Formula: K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂

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.

ⓘ Calcite

Formula: CaCO₃

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.

ⓘ Cancrinite

Formula: (Na,Ca,◻)₈(Al₆Si₆O₂₄)(CO₃,SO₄)₂ · 2H₂O

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.

ⓘ 'Clinopyroxene Subgroup'

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.

ⓘ 'Columbite-(Fe)-Columbite-(Mn) Series'

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.

ⓘ 'Fayalite-Forsterite Series'

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.

ⓘ 'Feldspar Group'

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.

ⓘ 'Feldspar Group var. Perthite'

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.

ⓘ 'Florencite'

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.

Orris, Greta J., Grauch, Richard I. (2002) Rare Earth Element Mines, Deposits, and Occurrences. Open-File Report 2002-189. US Geological Survey doi:10.3133/ofr02189

ⓘ Fluorapatite

Formula: Ca₅(PO₄)₃F

References:

ⓘ Fluorite

Formula: CaF₂

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.

ⓘ Galena

Formula: PbS

References:

ⓘ Goyazite

Formula: SrAl₃(PO₄)(PO₃OH)(OH)₆

References:

ⓘ 'Hornblende Root Name Group'

Formula: ◻Ca₂(Z²⁺₄Z³⁺)(AlSi₇O₂₂)(OH,F,Cl)₂

ⓘ Ilmenite

Formula: Fe²⁺TiO₃

References:

ⓘ 'K Feldspar'

References:

ⓘ Magnetite

Formula: Fe²⁺Fe³⁺₂O₄

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.

Orris, Greta J., Grauch, Richard I. (2002) Rare Earth Element Mines, Deposits, and Occurrences. Open-File Report 2002-189. US Geological Survey doi:10.3133/ofr02189

ⓘ 'Mica Group'

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.

ⓘ Microcline

Formula: K(AlSi₃O₈)

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.

Orris, Greta J., Grauch, Richard I. (2002) Rare Earth Element Mines, Deposits, and Occurrences. Open-File Report 2002-189. US Geological Survey doi:10.3133/ofr02189

ⓘ Monazite-(Ce)

Formula: Ce(PO₄)

References:

ⓘ Monazite-(La)

Formula: La(PO₄)

References:

ⓘ Nepheline

Formula: Na₃K(Al₄Si₄O₁₆)

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.

ⓘ Orthoclase

Formula: K(AlSi₃O₈)

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.

ⓘ 'Parisite'

Formula: Ca(Ce/La/Nd/REE)₂(CO₃)₃F₂

References:

ⓘ Parisite-(Ce)

Formula: CaCe₂(CO₃)₃F₂

References:

ⓘ Phlogopite

Formula: KMg₃(AlSi₃O₁₀)(OH)₂

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.

ⓘ 'Plagioclase'

Formula: (Na,Ca)[(Si,Al)AlSi₂]O₈

References:

ⓘ Pyrite

Formula: FeS₂

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.

ⓘ 'Pyrochlore Group'

Formula: A₂Nb₂(O,OH)₆Z

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.

Orris, Greta J., Grauch, Richard I. (2002) Rare Earth Element Mines, Deposits, and Occurrences. Open-File Report 2002-189. US Geological Survey doi:10.3133/ofr02189

ⓘ 'Pyroxene Group'

Formula: ADSi₂O₆

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.

ⓘ Quartz

Formula: SiO₂

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.

ⓘ 'Rhombohedral Carbonate'

Formula: (Ca/Mg/Fe/Mn etc)CO₃

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.

ⓘ Richterite

Formula: Na(NaCa)Mg₅(Si₈O₂₂)(OH)₂

References:

ⓘ Riebeckite

Formula: ◻[Na₂][Fe²⁺₃Fe³⁺₂]Si₈O₂₂(OH)₂

References:

ⓘ Rutile

Formula: TiO₂

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.

Orris, Greta J., Grauch, Richard I. (2002) Rare Earth Element Mines, Deposits, and Occurrences. Open-File Report 2002-189. US Geological Survey doi:10.3133/ofr02189

ⓘ Siderite

Formula: FeCO₃

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.

ⓘ 'Sodic amphibole'

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.

ⓘ Spinel

Formula: MgAl₂O₄

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.

ⓘ Strontianite

Formula: SrCO₃

References:

ⓘ 'Synchysite'

Formula: Ca(Ce/Nd/Y/REE)(CO₃)₂F

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.

ⓘ Synchysite-(Ce)

Formula: CaCe(CO₃)₂F

References:

ⓘ 'Tantalite'

Formula: (Mn,Fe)(Ta,Nb)₂O₆

References:

Orris, Greta J., Grauch, Richard I. (2002) Rare Earth Element Mines, Deposits, and Occurrences. Open-File Report 2002-189. US Geological Survey doi:10.3133/ofr02189

ⓘ Titanite

Formula: CaTi(SiO₄)O

References:

ⓘ Wollastonite

Formula: Ca₃(Si₃O₉)

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.

ⓘ 'Xenotime'

References:

ⓘ Xenotime-(Y)

Formula: Y(PO₄)

References:

ⓘ Zircon

Formula: Zr(SiO₄)

References:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘ	Galena	2.CD.10	PbS
ⓘ	Pyrite	2.EB.05a	FeS₂
Group 3 - Halides
ⓘ	Fluorite	3.AB.25	CaF₂
Group 4 - Oxides and Hydroxides
ⓘ	'Pyrochlore Group'	4.00.	A₂Nb₂(O,OH)₆Z
ⓘ	Magnetite	4.BB.05	Fe²⁺Fe³⁺₂O₄
ⓘ	Spinel	4.BB.05	MgAl₂O₄
ⓘ	Ilmenite	4.CB.05	Fe²⁺TiO₃
ⓘ	Quartz	4.DA.05	SiO₂
ⓘ	Rutile	4.DB.05	TiO₂
Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
ⓘ	Siderite	5.AB.05	FeCO₃
ⓘ	Ankerite	5.AB.10	Ca(Fe²⁺,Mg)(CO₃)₂
ⓘ	Strontianite	5.AB.15	SrCO₃
ⓘ	Bastnäsite-(Ce)	5.BD.20a	Ce(CO₃)F
ⓘ	Parisite-(Ce)	5.BD.20b	CaCe₂(CO₃)₃F₂
ⓘ	Synchysite-(Ce)	5.BD.20c	CaCe(CO₃)₂F
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘ	Baryte	7.AD.35	BaSO₄
Group 8 - Phosphates, Arsenates and Vanadates
ⓘ	Xenotime-(Y)	8.AD.35	Y(PO₄)
ⓘ	Monazite-(Ce)	8.AD.50	Ce(PO₄)
ⓘ	Monazite-(La)	8.AD.50	La(PO₄)
ⓘ	Goyazite	8.BL.10	SrAl₃(PO₄)(PO₃OH)(OH)₆
ⓘ	Fluorapatite	8.BN.05	Ca₅(PO₄)₃F
Group 9 - Silicates
ⓘ	Andradite	9.AD.25	Ca₃Fe³⁺₂(SiO₄)₃
ⓘ	var. Melanite	9.AD.25	Ca₃Fe³⁺₂(SiO₄)₃
ⓘ	Zircon	9.AD.30	Zr(SiO₄)
ⓘ	Titanite	9.AG.15	CaTi(SiO₄)O
ⓘ	Augite	9.DA.15	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
ⓘ	Aegirine-augite	9.DA.20	(Na_aCa_bFe²⁺_cMg_d)(Fe³⁺_eAl_fFe²⁺_gMg_h)Si₂O₆
ⓘ	Aegirine	9.DA.25	NaFe³⁺Si₂O₆
ⓘ	Richterite	9.DE.20	Na(NaCa)Mg₅(Si₈O₂₂)(OH)₂
ⓘ	Riebeckite	9.DE.25	◻[Na₂][Fe²⁺₃Fe³⁺₂]Si₈O₂₂(OH)₂
ⓘ	Wollastonite	9.DG.05	Ca₃(Si₃O₉)
ⓘ	Phlogopite	9.EC.20	KMg₃(AlSi₃O₁₀)(OH)₂
ⓘ	Nepheline	9.FA.05	Na₃K(Al₄Si₄O₁₆)
ⓘ	Microcline	9.FA.30	K(AlSi₃O₈)
ⓘ	Orthoclase	9.FA.30	K(AlSi₃O₈)
ⓘ	Albite	9.FA.35	Na(AlSi₃O₈)
ⓘ	var. Andesine	9.FA.35	(Na,Ca)[Al(Si,Al)Si₂O₈]
ⓘ	var. Oligoclase	9.FA.35	(Na,Ca)[Al(Si,Al)Si₂O₈]
ⓘ	Cancrinite	9.FB.05	(Na,Ca,◻)₈(Al₆Si₆O₂₄)(CO₃,SO₄)₂ · 2H₂O
Unclassified
ⓘ	'Amphibole Supergroup'	-	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
ⓘ	'Bastnäsite'	-	(Ce/Nd/Y/REE)(CO₃)F
ⓘ	'Biotite'	-	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
ⓘ	'Feldspar Group'	-
ⓘ	'Tantalite'	-	(Mn,Fe)(Ta,Nb)₂O₆
ⓘ	'Xenotime'	-
ⓘ	'Feldspar Group var. Perthite'	-
ⓘ	'Mica Group'	-
ⓘ	'Parisite'	-	Ca(Ce/La/Nd/REE)₂(CO₃)₃F₂
ⓘ	'Synchysite'	-	Ca(Ce/Nd/Y/REE)(CO₃)₂F
ⓘ	'Clinopyroxene Subgroup'	-
ⓘ	'Fayalite-Forsterite Series'	-
ⓘ	'Columbite-(Fe)-Columbite-(Mn) Series'	-
ⓘ	'Hornblende Root Name Group'	-	◻Ca₂(Z²⁺₄Z³⁺)(AlSi₇O₂₂)(OH,F,Cl)₂
ⓘ	'Plagioclase'	-	(Na,Ca)[(Si,Al)AlSi₂]O₈
ⓘ	'K Feldspar'	-
ⓘ	'Pyroxene Group'	-	ADSi₂O₆
ⓘ	'Florencite'	-
ⓘ	'Apatite'	-	Ca₅(PO₄)₃A
ⓘ	'var. Carbonate-rich Apatite'	-	Ca₅(PO₄)₃(Cl/F/OH)
ⓘ	'Sodic amphibole'	-
ⓘ	'Rhombohedral Carbonate'	-	(Ca/Mg/Fe/Mn etc)CO₃

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
H	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
H	ⓘ Cancrinite	(Na,Ca,◻)₈(Al₆Si₆O₂₄)(CO₃,SO₄)₂ · 2H₂O
H	ⓘ Goyazite	SrAl₃(PO₄)(PO₃OH)(OH)₆
H	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
H	ⓘ Pyrochlore Group	A₂Nb₂(O,OH)₆Z
H	ⓘ Richterite	Na(NaCa)Mg₅(Si₈O₂₂)(OH)₂
H	ⓘ Riebeckite	◻[Na₂][Fe₃²⁺Fe₂³⁺]Si₈O₂₂(OH)₂
H	ⓘ Hornblende Root Name Group	◻Ca₂(Z₄²⁺Z³⁺)(AlSi₇O₂₂)(OH,F,Cl)₂
H	ⓘ Apatite var. Carbonate-rich Apatite	Ca₅(PO₄)₃(Cl/F/OH)
C	Carbon
C	ⓘ Ankerite	Ca(Fe²⁺,Mg)(CO₃)₂
C	ⓘ Bastnäsite-(Ce)	Ce(CO₃)F
C	ⓘ Bastnäsite	(Ce/Nd/Y/REE)(CO₃)F
C	ⓘ Calcite	CaCO₃
C	ⓘ Cancrinite	(Na,Ca,◻)₈(Al₆Si₆O₂₄)(CO₃,SO₄)₂ · 2H₂O
C	ⓘ Parisite-(Ce)	CaCe₂(CO₃)₃F₂
C	ⓘ Siderite	FeCO₃
C	ⓘ Strontianite	SrCO₃
C	ⓘ Synchysite-(Ce)	CaCe(CO₃)₂F
C	ⓘ Parisite	Ca(Ce/La/Nd/REE)₂(CO₃)₃F₂
C	ⓘ Rhombohedral Carbonate	(Ca/Mg/Fe/Mn etc)CO₃
O	Oxygen
O	ⓘ Aegirine	NaFe³⁺Si₂O₆
O	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
O	ⓘ Albite	Na(AlSi₃O₈)
O	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
O	ⓘ Albite var. Andesine	(Na,Ca)[Al(Si,Al)Si₂O₈]
O	ⓘ Andradite	Ca₃Fe₂³⁺(SiO₄)₃
O	ⓘ Ankerite	Ca(Fe²⁺,Mg)(CO₃)₂
O	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
O	ⓘ Baryte	BaSO₄
O	ⓘ Bastnäsite-(Ce)	Ce(CO₃)F
O	ⓘ Bastnäsite	(Ce/Nd/Y/REE)(CO₃)F
O	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
O	ⓘ Calcite	CaCO₃
O	ⓘ Cancrinite	(Na,Ca,◻)₈(Al₆Si₆O₂₄)(CO₃,SO₄)₂ · 2H₂O
O	ⓘ Fluorapatite	Ca₅(PO₄)₃F
O	ⓘ Goyazite	SrAl₃(PO₄)(PO₃OH)(OH)₆
O	ⓘ Ilmenite	Fe²⁺TiO₃
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
O	ⓘ Microcline	K(AlSi₃O₈)
O	ⓘ Monazite-(Ce)	Ce(PO₄)
O	ⓘ Monazite-(La)	La(PO₄)
O	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
O	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
O	ⓘ Orthoclase	K(AlSi₃O₈)
O	ⓘ Parisite-(Ce)	CaCe₂(CO₃)₃F₂
O	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
O	ⓘ Pyrochlore Group	A₂Nb₂(O,OH)₆Z
O	ⓘ Quartz	SiO₂
O	ⓘ Richterite	Na(NaCa)Mg₅(Si₈O₂₂)(OH)₂
O	ⓘ Riebeckite	◻[Na₂][Fe₃²⁺Fe₂³⁺]Si₈O₂₂(OH)₂
O	ⓘ Rutile	TiO₂
O	ⓘ Siderite	FeCO₃
O	ⓘ Spinel	MgAl₂O₄
O	ⓘ Strontianite	SrCO₃
O	ⓘ Synchysite-(Ce)	CaCe(CO₃)₂F
O	ⓘ Tantalite	(Mn,Fe)(Ta,Nb)₂O₆
O	ⓘ Titanite	CaTi(SiO₄)O
O	ⓘ Wollastonite	Ca₃(Si₃O₉)
O	ⓘ Xenotime-(Y)	Y(PO₄)
O	ⓘ Zircon	Zr(SiO₄)
O	ⓘ Parisite	Ca(Ce/La/Nd/REE)₂(CO₃)₃F₂
O	ⓘ Andradite var. Melanite	Ca₃Fe₂³⁺(SiO₄)₃
O	ⓘ Fayalite-Forsterite Series
O	ⓘ Columbite-(Fe)-Columbite-(Mn) Series
O	ⓘ Hornblende Root Name Group	◻Ca₂(Z₄²⁺Z³⁺)(AlSi₇O₂₂)(OH,F,Cl)₂
O	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
O	ⓘ Pyroxene Group	ADSi₂O₆
O	ⓘ Apatite	Ca₅(PO₄)₃A
O	ⓘ Apatite var. Carbonate-rich Apatite	Ca₅(PO₄)₃(Cl/F/OH)
O	ⓘ Rhombohedral Carbonate	(Ca/Mg/Fe/Mn etc)CO₃
F	Fluorine
F	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
F	ⓘ Bastnäsite-(Ce)	Ce(CO₃)F
F	ⓘ Bastnäsite	(Ce/Nd/Y/REE)(CO₃)F
F	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
F	ⓘ Fluorapatite	Ca₅(PO₄)₃F
F	ⓘ Fluorite	CaF₂
F	ⓘ Parisite-(Ce)	CaCe₂(CO₃)₃F₂
F	ⓘ Synchysite-(Ce)	CaCe(CO₃)₂F
F	ⓘ Parisite	Ca(Ce/La/Nd/REE)₂(CO₃)₃F₂
F	ⓘ Hornblende Root Name Group	◻Ca₂(Z₄²⁺Z³⁺)(AlSi₇O₂₂)(OH,F,Cl)₂
F	ⓘ Apatite var. Carbonate-rich Apatite	Ca₅(PO₄)₃(Cl/F/OH)
Na	Sodium
Na	ⓘ Aegirine	NaFe³⁺Si₂O₆
Na	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Na	ⓘ Albite	Na(AlSi₃O₈)
Na	ⓘ Albite var. Andesine	(Na,Ca)[Al(Si,Al)Si₂O₈]
Na	ⓘ Cancrinite	(Na,Ca,◻)₈(Al₆Si₆O₂₄)(CO₃,SO₄)₂ · 2H₂O
Na	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
Na	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
Na	ⓘ Richterite	Na(NaCa)Mg₅(Si₈O₂₂)(OH)₂
Na	ⓘ Riebeckite	◻[Na₂][Fe₃²⁺Fe₂³⁺]Si₈O₂₂(OH)₂
Na	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Mg	Magnesium
Mg	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Mg	ⓘ Ankerite	Ca(Fe²⁺,Mg)(CO₃)₂
Mg	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Mg	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Mg	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Mg	ⓘ Richterite	Na(NaCa)Mg₅(Si₈O₂₂)(OH)₂
Mg	ⓘ Spinel	MgAl₂O₄
Mg	ⓘ Fayalite-Forsterite Series
Mg	ⓘ Rhombohedral Carbonate	(Ca/Mg/Fe/Mn etc)CO₃
Al	Aluminium
Al	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Al	ⓘ Albite	Na(AlSi₃O₈)
Al	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Al	ⓘ Albite var. Andesine	(Na,Ca)[Al(Si,Al)Si₂O₈]
Al	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Al	ⓘ Cancrinite	(Na,Ca,◻)₈(Al₆Si₆O₂₄)(CO₃,SO₄)₂ · 2H₂O
Al	ⓘ Goyazite	SrAl₃(PO₄)(PO₃OH)(OH)₆
Al	ⓘ Microcline	K(AlSi₃O₈)
Al	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
Al	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
Al	ⓘ Orthoclase	K(AlSi₃O₈)
Al	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Al	ⓘ Spinel	MgAl₂O₄
Al	ⓘ Hornblende Root Name Group	◻Ca₂(Z₄²⁺Z³⁺)(AlSi₇O₂₂)(OH,F,Cl)₂
Al	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	Silicon
Si	ⓘ Aegirine	NaFe³⁺Si₂O₆
Si	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Si	ⓘ Albite	Na(AlSi₃O₈)
Si	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Si	ⓘ Albite var. Andesine	(Na,Ca)[Al(Si,Al)Si₂O₈]
Si	ⓘ Andradite	Ca₃Fe₂³⁺(SiO₄)₃
Si	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Si	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Si	ⓘ Cancrinite	(Na,Ca,◻)₈(Al₆Si₆O₂₄)(CO₃,SO₄)₂ · 2H₂O
Si	ⓘ Microcline	K(AlSi₃O₈)
Si	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
Si	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
Si	ⓘ Orthoclase	K(AlSi₃O₈)
Si	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Si	ⓘ Quartz	SiO₂
Si	ⓘ Richterite	Na(NaCa)Mg₅(Si₈O₂₂)(OH)₂
Si	ⓘ Riebeckite	◻[Na₂][Fe₃²⁺Fe₂³⁺]Si₈O₂₂(OH)₂
Si	ⓘ Titanite	CaTi(SiO₄)O
Si	ⓘ Wollastonite	Ca₃(Si₃O₉)
Si	ⓘ Zircon	Zr(SiO₄)
Si	ⓘ Andradite var. Melanite	Ca₃Fe₂³⁺(SiO₄)₃
Si	ⓘ Fayalite-Forsterite Series
Si	ⓘ Hornblende Root Name Group	◻Ca₂(Z₄²⁺Z³⁺)(AlSi₇O₂₂)(OH,F,Cl)₂
Si	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	ⓘ Pyroxene Group	ADSi₂O₆
P	Phosphorus
P	ⓘ Fluorapatite	Ca₅(PO₄)₃F
P	ⓘ Goyazite	SrAl₃(PO₄)(PO₃OH)(OH)₆
P	ⓘ Monazite-(Ce)	Ce(PO₄)
P	ⓘ Monazite-(La)	La(PO₄)
P	ⓘ Xenotime-(Y)	Y(PO₄)
P	ⓘ Apatite	Ca₅(PO₄)₃A
P	ⓘ Apatite var. Carbonate-rich Apatite	Ca₅(PO₄)₃(Cl/F/OH)
S	Sulfur
S	ⓘ Baryte	BaSO₄
S	ⓘ Cancrinite	(Na,Ca,◻)₈(Al₆Si₆O₂₄)(CO₃,SO₄)₂ · 2H₂O
S	ⓘ Galena	PbS
S	ⓘ Pyrite	FeS₂
Cl	Chlorine
Cl	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Cl	ⓘ Hornblende Root Name Group	◻Ca₂(Z₄²⁺Z³⁺)(AlSi₇O₂₂)(OH,F,Cl)₂
Cl	ⓘ Apatite var. Carbonate-rich Apatite	Ca₅(PO₄)₃(Cl/F/OH)
K	Potassium
K	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
K	ⓘ Microcline	K(AlSi₃O₈)
K	ⓘ Nepheline	Na₃K(Al₄Si₄O₁₆)
K	ⓘ Orthoclase	K(AlSi₃O₈)
K	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Ca	Calcium
Ca	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Ca	ⓘ Albite var. Andesine	(Na,Ca)[Al(Si,Al)Si₂O₈]
Ca	ⓘ Andradite	Ca₃Fe₂³⁺(SiO₄)₃
Ca	ⓘ Ankerite	Ca(Fe²⁺,Mg)(CO₃)₂
Ca	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Cancrinite	(Na,Ca,◻)₈(Al₆Si₆O₂₄)(CO₃,SO₄)₂ · 2H₂O
Ca	ⓘ Fluorapatite	Ca₅(PO₄)₃F
Ca	ⓘ Fluorite	CaF₂
Ca	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
Ca	ⓘ Parisite-(Ce)	CaCe₂(CO₃)₃F₂
Ca	ⓘ Richterite	Na(NaCa)Mg₅(Si₈O₂₂)(OH)₂
Ca	ⓘ Synchysite-(Ce)	CaCe(CO₃)₂F
Ca	ⓘ Titanite	CaTi(SiO₄)O
Ca	ⓘ Wollastonite	Ca₃(Si₃O₉)
Ca	ⓘ Parisite	Ca(Ce/La/Nd/REE)₂(CO₃)₃F₂
Ca	ⓘ Andradite var. Melanite	Ca₃Fe₂³⁺(SiO₄)₃
Ca	ⓘ Hornblende Root Name Group	◻Ca₂(Z₄²⁺Z³⁺)(AlSi₇O₂₂)(OH,F,Cl)₂
Ca	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Ca	ⓘ Apatite	Ca₅(PO₄)₃A
Ca	ⓘ Apatite var. Carbonate-rich Apatite	Ca₅(PO₄)₃(Cl/F/OH)
Ca	ⓘ Rhombohedral Carbonate	(Ca/Mg/Fe/Mn etc)CO₃
Ti	Titanium
Ti	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Ti	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Ti	ⓘ Ilmenite	Fe²⁺TiO₃
Ti	ⓘ Rutile	TiO₂
Ti	ⓘ Titanite	CaTi(SiO₄)O
Mn	Manganese
Mn	ⓘ Tantalite	(Mn,Fe)(Ta,Nb)₂O₆
Mn	ⓘ Columbite-(Fe)-Columbite-(Mn) Series
Mn	ⓘ Rhombohedral Carbonate	(Ca/Mg/Fe/Mn etc)CO₃
Fe	Iron
Fe	ⓘ Aegirine	NaFe³⁺Si₂O₆
Fe	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Fe	ⓘ Andradite	Ca₃Fe₂³⁺(SiO₄)₃
Fe	ⓘ Ankerite	Ca(Fe²⁺,Mg)(CO₃)₂
Fe	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Fe	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Fe	ⓘ Ilmenite	Fe²⁺TiO₃
Fe	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
Fe	ⓘ Pyrite	FeS₂
Fe	ⓘ Riebeckite	◻[Na₂][Fe₃²⁺Fe₂³⁺]Si₈O₂₂(OH)₂
Fe	ⓘ Siderite	FeCO₃
Fe	ⓘ Tantalite	(Mn,Fe)(Ta,Nb)₂O₆
Fe	ⓘ Andradite var. Melanite	Ca₃Fe₂³⁺(SiO₄)₃
Fe	ⓘ Fayalite-Forsterite Series
Fe	ⓘ Columbite-(Fe)-Columbite-(Mn) Series
Fe	ⓘ Rhombohedral Carbonate	(Ca/Mg/Fe/Mn etc)CO₃
Sr	Strontium
Sr	ⓘ Goyazite	SrAl₃(PO₄)(PO₃OH)(OH)₆
Sr	ⓘ Strontianite	SrCO₃
Y	Yttrium
Y	ⓘ Bastnäsite	(Ce/Nd/Y/REE)(CO₃)F
Y	ⓘ Xenotime-(Y)	Y(PO₄)
Zr	Zirconium
Zr	ⓘ Zircon	Zr(SiO₄)
Nb	Niobium
Nb	ⓘ Pyrochlore Group	A₂Nb₂(O,OH)₆Z
Nb	ⓘ Tantalite	(Mn,Fe)(Ta,Nb)₂O₆
Nb	ⓘ Columbite-(Fe)-Columbite-(Mn) Series
Ba	Barium
Ba	ⓘ Baryte	BaSO₄
La	Lanthanum
La	ⓘ Monazite-(La)	La(PO₄)
La	ⓘ Parisite	Ca(Ce/La/Nd/REE)₂(CO₃)₃F₂
Ce	Cerium
Ce	ⓘ Bastnäsite-(Ce)	Ce(CO₃)F
Ce	ⓘ Bastnäsite	(Ce/Nd/Y/REE)(CO₃)F
Ce	ⓘ Monazite-(Ce)	Ce(PO₄)
Ce	ⓘ Parisite-(Ce)	CaCe₂(CO₃)₃F₂
Ce	ⓘ Synchysite-(Ce)	CaCe(CO₃)₂F
Ce	ⓘ Parisite	Ca(Ce/La/Nd/REE)₂(CO₃)₃F₂
Nd	Neodymium
Nd	ⓘ Bastnäsite	(Ce/Nd/Y/REE)(CO₃)F
Nd	ⓘ Parisite	Ca(Ce/La/Nd/REE)₂(CO₃)₃F₂
Ta	Tantalum
Ta	ⓘ Tantalite	(Mn,Fe)(Ta,Nb)₂O₆
Pb	Lead
Pb	ⓘ Galena	PbS

Geochronology

Mineralization age: Early/Lower Cretaceous : 136 ± 7 Ma to 125.8 ± 7.7 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 Time

Rocks, Minerals and Events

Phanerozoic

Mesozoic

Cretaceous

Early/Lower Cretaceous

ⓘ Zircon	125.8 ± 7.7 Ma
ⓘ Titanite	125.8 ± 7.7 Ma
ⓘ Biotite	136 ± 7 Ma

Fossils

This region is too big or complex to display the fossil list, try looking at smaller subregions.

Other Databases

Wikipedia:	https://en.wikipedia.org/wiki/Chisi_Island
Wikidata ID:	Q1074841

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

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. (1987) Lithosphere metasomatism and the petrogenesis of the Chilwa Province of alkaline igneous rocks and carbonatites, Malawi. Journal of African Earth Sciences: 6: 891-898.

Orris, Greta J., Grauch, Richard I. (2002) Rare Earth Element Mines, Deposits, and Occurrences. Open-File Report 2002-189. US Geological Survey doi:10.3133/ofr02189

Quick NavTop Mineral List Rock Types Geochronology Fossils Other Databases References

Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: October 19, 2026 05:36:23 Page updated: May 9, 2026 15:54:19

Go to top of page

Nchisi Island (Chilwa Island; Shirwa Island), Zomba, Southern Region, MalawiiRegional Level TypesNchisi Island (Chilwa Island; Shirwa Island)Island ZombaDistrict Southern RegionRegion MalawiCountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

Select Mineral List Type

Mineral List

Rock Types Recorded

Select Rock List Type

Detailed Mineral List:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

List of minerals for each chemical element

Geochronology

Fossils

Other Databases

References

Nchisi Island (Chilwa Island; Shirwa Island), Zomba, Southern Region, Malawi i
Regional Level Types
Nchisi Island (Chilwa Island; Shirwa Island) Island
Zomba District
Southern Region Region
Malawi Country