SUPPORT US. If mindat.org is important to you, click here to donate to our Fall 2019 fundraiser!
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsBooks & Magazines
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryMineral Photography

Kerimasi volcano, Monduli District, Arusha Region, Tanzaniai
Regional Level Types
Kerimasi volcanoVolcano
Monduli DistrictDistrict
Arusha RegionRegion
TanzaniaCountry

This page is currently not sponsored. Click here to sponsor this page.
Key
Latitude & Longitude (WGS84):
2° 51' South , 35° 57' East
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:


Kerimasi is an extinct carbonatite-nephelinite volcano located in the Gregory rift in northern Tanzania.

It is composed of nephelinitic pyroclastic rocks with carbonatite agglomerates and tuffs.

Regions containing this locality

Somali Plate (Somalia Plate)Tectonic Plate
Great Rift Valley, Africa

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

19 valid minerals. 1 (TL) - type locality of 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!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Reference: Chakhmouradian, A.R. and Zaitsev, A.N. (2012) Rare earth mineralization in igneous rocks: sources and processes. Elements, 8, #5, 347-353.; Guzmics, T., Mitchell, R. H., Szabó, C., Berkesi, M., Milke, R., & Ratter, K. (2012). Liquid immiscibility between silicate, carbonate and sulfide melts in melt inclusions hosted in co-precipitated minerals from Kerimasi volcano (Tanzania): evolution of carbonated nephelinitic magma. Contributions to Mineralogy and Petrology, 164(1), 101-122.
Baddeleyite
Formula: ZrO2
Reference: Zaitsev A.N., Wenzel T., Markl G., Spratt J., Petrov S.V., Williams, C.T. (2010) Mineralogy and geochemistry of nephelinites and phonolites from the Sadiman volcano, northern Tanzania. Abstracts of XXVII International conference School «Geochemistry of Alkaline rocks». – Moscow-Koktebel’. pp. 240 pp.; Zaitsev, A. N. (2010). Nyerereite from calcite carbonatite at the Kerimasi volcano, northern Tanzania. Geology of Ore Deposits, 52(7), 630-640.
Baryte
Formula: BaSO4
Reference: Zaitsev, A. N. (2010). Nyerereite from calcite carbonatite at the Kerimasi volcano, northern Tanzania. Geology of Ore Deposits, 52(7), 630-640.
Calcite
Formula: CaCO3
Reference: Zaitsev, A.N., Williams, C.T., Britvin, S.N., Kuznetsova, I.V., Spratt, J., Petrov, S.V., and Keller, J. (2010): Mineralogical Magazine 74(5), 803-820.; Zaitsev, A. N. (2010). Nyerereite from calcite carbonatite at the Kerimasi volcano, northern Tanzania. Geology of Ore Deposits, 52(7), 630-640.; Guzmics, T., Mitchell, R. H., Szabó, C., Berkesi, M., Milke, R., & Ratter, K. (2012). Liquid immiscibility between silicate, carbonate and sulfide melts in melt inclusions hosted in co-precipitated minerals from Kerimasi volcano (Tanzania): evolution of carbonated nephelinitic magma. Contributions to Mineralogy and Petrology, 164(1), 101-122.
Cerianite-(Ce)
Formula: (Ce4+,Th)O2
Reference: Zaitsev, A.N., Chakhmouradian, A.R., Siidra, O.I., Spratt, J., Williams, C.T., Stanley, C.J., Petrov, S.V., Britvin, S.N., Polyakova, E.A. (2011): Fluorine-, yttrium- and lanthanide-rich cerianite-(Ce) from carbonatitic rocks of the Kerimasi volcano and surrounding explosion craters, Gregory Rift, northern Tanzania. Mineralogical Magazine, 75, (in press).
'Clinopyroxene Subgroup'
Reference: Guzmics, T., Mitchell, R. H., Szabó, C., Berkesi, M., Milke, R., & Ratter, K. (2012). Liquid immiscibility between silicate, carbonate and sulfide melts in melt inclusions hosted in co-precipitated minerals from Kerimasi volcano (Tanzania): evolution of carbonated nephelinitic magma. Contributions to Mineralogy and Petrology, 164(1), 101-122.
Dolomite
Formula: CaMg(CO3)2
Reference: Zaitsev, A. N. (2010). Nyerereite from calcite carbonatite at the Kerimasi volcano, northern Tanzania. Geology of Ore Deposits, 52(7), 630-640.
Fluorapatite
Formula: Ca5(PO4)3F
Reference: Zaitsev, A. N. (2010). Nyerereite from calcite carbonatite at the Kerimasi volcano, northern Tanzania. Geology of Ore Deposits, 52(7), 630-640.
Forsterite
Formula: Mg2SiO4
Reference: Zaitsev, A. N. (2010). Nyerereite from calcite carbonatite at the Kerimasi volcano, northern Tanzania. Geology of Ore Deposits, 52(7), 630-640.
Franklinite
Formula: Zn2+Fe3+2O4
Reference: Zaitsev, A. N. (2010). Nyerereite from calcite carbonatite at the Kerimasi volcano, northern Tanzania. Geology of Ore Deposits, 52(7), 630-640.
Jacobsite
Formula: Mn2+Fe3+2O4
Reference: Zaitsev, A. N. (2010). Nyerereite from calcite carbonatite at the Kerimasi volcano, northern Tanzania. Geology of Ore Deposits, 52(7), 630-640.
Kerimasite (TL)
Formula: Ca3Zr2(SiO4)(Fe3+O4)2
Reference: Zaitsev, A.N., Williams, C.T., Britvin, S.N., Kuznetsova, I.V., Spratt, J., Petrov, S.V., and Keller, J. (2010): Mineralogical Magazine 74(5), 803-820.
Kimzeyite
Formula: Ca3(Zr,Ti)2((Si,Al,Fe3+)O4)3
Reference: Zaitsev A.N., Wenzel T., Markl G., Spratt J., Petrov S.V., Williams, C.T. (2010) Mineralogy and geochemistry of nephelinites and phonolites from the Sadiman volcano, northern Tanzania. Abstracts of XXVII International conference School «Geochemistry of Alkaline rocks». – Moscow-Koktebel’. pp. 240 pp.
Magnesioferrite
Formula: MgFe3+2O4
Reference: Zaitsev, A. N. (2010). Nyerereite from calcite carbonatite at the Kerimasi volcano, northern Tanzania. Geology of Ore Deposits, 52(7), 630-640.
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Chakhmouradian, A.R. and Zaitsev, A.N. (2012) Rare earth mineralization in igneous rocks: sources and processes. Elements, 8, #5, 347-353.; Zaitsev, A. N. (2010). Nyerereite from calcite carbonatite at the Kerimasi volcano, northern Tanzania. Geology of Ore Deposits, 52(7), 630-640.; Guzmics, T., Mitchell, R. H., Szabó, C., Berkesi, M., Milke, R., & Ratter, K. (2012). Liquid immiscibility between silicate, carbonate and sulfide melts in melt inclusions hosted in co-precipitated minerals from Kerimasi volcano (Tanzania): evolution of carbonated nephelinitic magma. Contributions to Mineralogy and Petrology, 164(1), 101-122.
'Melilite Group'
Formula: Ca2M(XSiO7)
Reference: Guzmics, T., Mitchell, R. H., Szabó, C., Berkesi, M., Milke, R., & Ratter, K. (2012). Liquid immiscibility between silicate, carbonate and sulfide melts in melt inclusions hosted in co-precipitated minerals from Kerimasi volcano (Tanzania): evolution of carbonated nephelinitic magma. Contributions to Mineralogy and Petrology, 164(1), 101-122.
Nepheline
Formula: Na3K(Al4Si4O16)
Reference: Guzmics, T., Mitchell, R. H., Szabó, C., Berkesi, M., Milke, R., & Ratter, K. (2012). Liquid immiscibility between silicate, carbonate and sulfide melts in melt inclusions hosted in co-precipitated minerals from Kerimasi volcano (Tanzania): evolution of carbonated nephelinitic magma. Contributions to Mineralogy and Petrology, 164(1), 101-122.
Nyerereite
Formula: Na2Ca(CO3)2
Reference: Zaitsev A.N., Wenzel T., Markl G., Spratt J., Petrov S.V., Williams, C.T. (2010) Mineralogy and geochemistry of nephelinites and phonolites from the Sadiman volcano, northern Tanzania. Abstracts of XXVII International conference School «Geochemistry of Alkaline rocks». – Moscow-Koktebel’. pp. 240 pp.
Perovskite
Formula: CaTiO3
Reference: Guzmics, T., Mitchell, R. H., Szabó, C., Berkesi, M., Milke, R., & Ratter, K. (2012). Liquid immiscibility between silicate, carbonate and sulfide melts in melt inclusions hosted in co-precipitated minerals from Kerimasi volcano (Tanzania): evolution of carbonated nephelinitic magma. Contributions to Mineralogy and Petrology, 164(1), 101-122.
'Pyrochlore'
Reference: Zaitsev A.N., Wenzel T., Markl G., Spratt J., Petrov S.V., Williams, C.T. (2010) Mineralogy and geochemistry of nephelinites and phonolites from the Sadiman volcano, northern Tanzania. Abstracts of XXVII International conference School «Geochemistry of Alkaline rocks». – Moscow-Koktebel’. pp. 240 pp.
Pyrrhotite
Formula: Fe7S8
Reference: Zaitsev, A. N. (2010). Nyerereite from calcite carbonatite at the Kerimasi volcano, northern Tanzania. Geology of Ore Deposits, 52(7), 630-640.
Strontianite
Formula: SrCO3
Reference: Zaitsev, A. N. (2010). Nyerereite from calcite carbonatite at the Kerimasi volcano, northern Tanzania. Geology of Ore Deposits, 52(7), 630-640.
Sulphohalite
Formula: Na6(SO4)2FCl
Description: Identified from carbonate-rich melt inclusions in jacupirangite.
Reference: Kaldos, R, Guzmics, T., Mitchell, R.H., Dawson, J.B., Milke, R., and Szabo, C. (2015) A melt evolution model for Kerimasi volcano, Tanzania: Evidence from carbonate melt inclusions in jacupirangite. Lithos , 238 , 101-119

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Pyrrhotite2.CC.10Fe7S8
Group 4 - Oxides and Hydroxides
Baddeleyite4.DE.35ZrO2
Cerianite-(Ce)4.DL.05(Ce4+,Th)O2
Franklinite4.BB.05Zn2+Fe3+2O4
Jacobsite4.BB.05Mn2+Fe3+2O4
Magnesioferrite4.BB.05MgFe3+2O4
Magnetite4.BB.05Fe2+Fe3+2O4
Perovskite4.CC.30CaTiO3
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Dolomite5.AB.10CaMg(CO3)2
Nyerereite5.AC.10Na2Ca(CO3)2
Strontianite5.AB.15SrCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Baryte7.AD.35BaSO4
Sulphohalite7.BD.05Na6(SO4)2FCl
Group 8 - Phosphates, Arsenates and Vanadates
Fluorapatite8.BN.05Ca5(PO4)3F
Group 9 - Silicates
Forsterite9.AC.05Mg2SiO4
Kerimasite (TL)9.AD.25Ca3Zr2(SiO4)(Fe3+O4)2
Kimzeyite9.AD.25Ca3(Zr,Ti)2((Si,Al,Fe3+)O4)3
Nepheline9.FA.05Na3K(Al4Si4O16)
Unclassified Minerals, Rocks, etc.
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'Clinopyroxene Subgroup'-
'Melilite Group'-Ca2M(XSiO7)
'Pyrochlore'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Pyrrhotite2.8.10.1Fe7S8
Group 4 - SIMPLE OXIDES
A2X3
Perovskite4.3.3.1CaTiO3
AX2
Baddeleyite4.4.14.1ZrO2
Cerianite-(Ce)4.4.12.1(Ce4+,Th)O2
Group 7 - MULTIPLE OXIDES
AB2X4
Franklinite7.2.2.4Zn2+Fe3+2O4
Jacobsite7.2.2.2Mn2+Fe3+2O4
Magnesioferrite7.2.2.1MgFe3+2O4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Strontianite14.1.3.3SrCO3
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
A2B(XO3)2
Nyerereite14.3.4.1Na2Ca(CO3)2
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)m(XO4)pZq, where m:p>2:1
Sulphohalite30.1.7.1Na6(SO4)2FCl
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Fluorapatite41.8.1.1Ca5(PO4)3F
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with all cations in octahedral [6] coordination
Forsterite51.3.1.2Mg2SiO4
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Kimzeyite51.4.3c.2Ca3(Zr,Ti)2((Si,Al,Fe3+)O4)3
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework Feldspathoids and related species
Nepheline76.2.1.2Na3K(Al4Si4O16)
Unclassified Minerals, Mixtures, etc.
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'Clinopyroxene Subgroup'-
Kerimasite (TL)-Ca3Zr2(SiO4)(Fe3+O4)2
'Melilite Group'-Ca2M(XSiO7)
'Pyrochlore'-

List of minerals for each chemical element

HHydrogen
H ApatiteCa5(PO4)3(Cl/F/OH)
CCarbon
C CalciteCaCO3
C NyerereiteNa2Ca(CO3)2
C DolomiteCaMg(CO3)2
C StrontianiteSrCO3
OOxygen
O KerimasiteCa3Zr2(SiO4)(Fe3+O4)2
O CalciteCaCO3
O Cerianite-(Ce)(Ce4+,Th)O2
O MagnetiteFe2+Fe23+O4
O ApatiteCa5(PO4)3(Cl/F/OH)
O NyerereiteNa2Ca(CO3)2
O BaddeleyiteZrO2
O KimzeyiteCa3(Zr,Ti)2((Si,Al,Fe3+)O4)3
O MagnesioferriteMgFe23+O4
O FluorapatiteCa5(PO4)3F
O ForsteriteMg2SiO4
O DolomiteCaMg(CO3)2
O BaryteBaSO4
O JacobsiteMn2+Fe23+O4
O FrankliniteZn2+Fe23+O4
O StrontianiteSrCO3
O SulphohaliteNa6(SO4)2FCl
O NephelineNa3K(Al4Si4O16)
O PerovskiteCaTiO3
O Melilite GroupCa2M(XSiO7)
FFluorine
F ApatiteCa5(PO4)3(Cl/F/OH)
F FluorapatiteCa5(PO4)3F
F SulphohaliteNa6(SO4)2FCl
NaSodium
Na NyerereiteNa2Ca(CO3)2
Na SulphohaliteNa6(SO4)2FCl
Na NephelineNa3K(Al4Si4O16)
MgMagnesium
Mg MagnesioferriteMgFe23+O4
Mg ForsteriteMg2SiO4
Mg DolomiteCaMg(CO3)2
AlAluminium
Al KimzeyiteCa3(Zr,Ti)2((Si,Al,Fe3+)O4)3
Al NephelineNa3K(Al4Si4O16)
SiSilicon
Si KerimasiteCa3Zr2(SiO4)(Fe3+O4)2
Si KimzeyiteCa3(Zr,Ti)2((Si,Al,Fe3+)O4)3
Si ForsteriteMg2SiO4
Si NephelineNa3K(Al4Si4O16)
Si Melilite GroupCa2M(XSiO7)
PPhosphorus
P ApatiteCa5(PO4)3(Cl/F/OH)
P FluorapatiteCa5(PO4)3F
SSulfur
S BaryteBaSO4
S PyrrhotiteFe7S8
S SulphohaliteNa6(SO4)2FCl
ClChlorine
Cl ApatiteCa5(PO4)3(Cl/F/OH)
Cl SulphohaliteNa6(SO4)2FCl
KPotassium
K NephelineNa3K(Al4Si4O16)
CaCalcium
Ca KerimasiteCa3Zr2(SiO4)(Fe3+O4)2
Ca CalciteCaCO3
Ca ApatiteCa5(PO4)3(Cl/F/OH)
Ca NyerereiteNa2Ca(CO3)2
Ca KimzeyiteCa3(Zr,Ti)2((Si,Al,Fe3+)O4)3
Ca FluorapatiteCa5(PO4)3F
Ca DolomiteCaMg(CO3)2
Ca PerovskiteCaTiO3
Ca Melilite GroupCa2M(XSiO7)
TiTitanium
Ti PerovskiteCaTiO3
MnManganese
Mn JacobsiteMn2+Fe23+O4
FeIron
Fe KerimasiteCa3Zr2(SiO4)(Fe3+O4)2
Fe MagnetiteFe2+Fe23+O4
Fe MagnesioferriteMgFe23+O4
Fe JacobsiteMn2+Fe23+O4
Fe FrankliniteZn2+Fe23+O4
Fe PyrrhotiteFe7S8
ZnZinc
Zn FrankliniteZn2+Fe23+O4
SrStrontium
Sr StrontianiteSrCO3
ZrZirconium
Zr KerimasiteCa3Zr2(SiO4)(Fe3+O4)2
Zr BaddeleyiteZrO2
Zr KimzeyiteCa3(Zr,Ti)2((Si,Al,Fe3+)O4)3
BaBarium
Ba BaryteBaSO4
CeCerium
Ce Cerianite-(Ce)(Ce4+,Th)O2
ThThorium
Th Cerianite-(Ce)(Ce4+,Th)O2

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Hay, R.L. (1983) Natrocarbonatite tephra of Kerimasi volcano, Tanzania. Geology, 11, 599-602.
Mariano, A.N. and Roeder, P.L. (1983) Kerimasi: a neglected carbonatite volcano. Journal of Geology, 91, 449-455.
Church, A.A. (1996) The petrology of the Kerimasi carbonatite volcano and the carbonatites of Oldoinyo Lengai with a review of other occurrences of extrusive carbonatites. Ph.D. thesis, University of London, 384 pp.
Guzmics, T., Mitchell, R.H., Szabó, C., Berkesi, M., Milke, R., and Ratter, K. (2012) Liquid immiscibility between silicate, carbonate and sulfide melts in melt inclusions hosted in co-precipitated minerals from Kerimasi volcano (Tanzania): evolution of carbonated nephelinitic magma. Contributions to Mineralogy and Petrology, 164(1), 101-122.
Kaldos, R., Guzmics, T., Mitchell, R.H., Dawson, J.B., Milke, R., and Szabo, C. (2015) A melt evolution model for Kerimasi volcano, Tanzania: Evidence from carbonate melt inclusions in jacupirangite. Lithos, 238, 101-119.

External Links


Localities in this Region


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.
 
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2019, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: October 16, 2019 04:11:26 Page generated: September 10, 2019 07:37:53
Go to top of page