Mineral Evolution Database

Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.

Mineral locality data provided by mindat.org

The Mineral Evolution database is currently under development.

The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.

Locality Name:
Eastern Region, Uganda

Oldest recorded age at locality: 66
Youngest recorded age at locality: 2.6

mindat Locality ID: 290424
mindat URL: http://www.mindat.org/loc-290424.html

Tectonic Settings:

Total number of sublocalities beneath "Eastern Region, Uganda": 24
Total number of bottom-level sublocalities: 14

Number of Child Localities: 6
Child Localities:
Bugiri District
Busia District
Manafwa District
Mbale District
Teso District
Tororo District

Latitude: 0°59'2"N
Longitude: 34°1'25"E
Decimal Degree (lat, lon): 0.98388888888889,34.023611111111

A	This mineral is Anthropogenic.
G	This mineral is directly dated.
B	This mineral is reported as having this age.
Y	This mineral is using an age reported as an element mineralization period.
O	This mineral is using an age calculated from all data at the locality.
R	The age displayed for this mineral originates from a different, non-child locality.
P	The age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
	This mineral's age has not yet been recorded.

Alunite	Amphibole	Analcime	Apatite	Aphthitalite	Apophyllite	Baddeleyite	Baryte	Calcite	Calzirtite
Cancrinite	Chalcopyrite	Clay	Copper	Corundum	Covellite	Cubanite	Diaspore	Djerfisherite	Epidote
Feldspar	Iron	Mica	Natrolite	Nickeline	None	Not in a structural group	Pentlandite	Perovskite	Pyrite
Pyroxene	Quartz	Rocksalt	Rutile	Smectite-vermiculite	Sphalerite	Spinel	Titanite	Tridymite	Zircon

This Mineral list contains entries from this locality, including sub-localities. Minerals in bold are reported by mindat.org as occurring directly at this locality, and do not occur at any children (sublocalities) of this locality.

Elements at this locality, including sub-localities: Al Au Ba Bi C Ca Cl Cr Cu F Fe H K Mg Mn Na Ni O P Pb S Si Ti Zn Zr

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Alunite Amphibole Analcime Apatite Aphthitalite Apophyllite Baddeleyite Baryte Calcite Calzirtite
Cancrinite Chalcopyrite Clay Copper Corundum Covellite Cubanite Diaspore Djerfisherite Epidote
Feldspar Iron Mica Natrolite Nickeline None Not in a structural group Pentlandite Perovskite Pyrite
Pyroxene Quartz Rocksalt Rutile Smectite-vermiculite Sphalerite Spinel Titanite Tridymite Zircon

58 IMA Minerals at location:

Aegirine ()*	Aegirine-augite ()*	Alabandite ()*	Albite ()*	Analcime ()*
Anatase ()*	Arfvedsonite ()*	Augelite ()*	Baddeleyite ()*	Baryte ()*
Bismite ()*	Buchwaldite ()*	Calcite ()*	Calzirtite ()*	Cancrinite ()*
Chalcopyrite ()*	Chromite ()*	Copper ()*	Covellite ()*	Crandallite ()*
Daubréelite ()*	Djerfisherite ()*	Dolomite ()*	Fluorapatite ()*	Fluorapophyllite-(K) ()*
Galena ()*	Goethite ()*	Gold ()*	Gorceixite ()*	Graphite ()*
Hematite ()*	Ilmenite ()*	Iron ()*	Isocubanite ()*	Mackinawite ()*
Magnesio-arfvedsonite ()*	Magnetite ()*	Microcline ()*	Muscovite ()*	Natrolite ()*
Nepheline ()*	Pentlandite ()*	Perovskite ()*	Phlogopite ()*	Pyrite ()*
Pyrrhotite ()*	Quartz ()*	Richterite ()*	Rutile ()*	Schreibersite ()*
Shortite ()*	Sphalerite ()*	Taenite ()*	Titanite ()*	Troilite ()*
Vermiculite ()*	Zircon ()*	Zoisite ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Aegirine ()*	Pyroxene	NaFe³⁺Si₂O₆	40	40	2	116855,116868	1022
Aegirine-augite ()*	Pyroxene	(Ca,Na)(Fe³⁺,Mg,Fe²⁺)Si₂O₆	40	40	2	116855,116868	286
Alabandite ()*	Rocksalt	MnS			1	116865	312
Albite ()*	Feldspar	Na(AlSi₃O₈)	40	40	1	116868	8803
Analcime ()*	Analcime	Na(AlSi₂O₆)·H₂O			1	116855	1627
Anatase ()*	Not in a structural group	TiO₂			1	116867	2162
Arfvedsonite ()*	Amphibole	NaNa₂(Fe²⁺₄Fe³⁺)Si₈O₂₂(OH)₂	40	40	1	116868	295
Augelite ()*	None	Al₂(PO₄)(OH)₃	66	2.6	1	116854	79
Baddeleyite ()*	Baddeleyite	ZrO₂	66	2.6	2	116857,116867	238
Baryte ()*	Baryte	Ba(SO₄)	66	2.6	2	116857,116867	11547
Bismite ()*	None	Bi₂O₃			1	116862	214
Buchwaldite ()*	Aphthitalite	NaCa(PO₄)			1	116865	3
Calcite ()*	Calcite	Ca(CO₃)	40	40	5	116849,116853,116855,116867,116868	27770
Calzirtite ()*	Calzirtite	Ca₂Zr₅Ti₂O₁₆	66	2.6	1	116856	32
Cancrinite ()*	Cancrinite	(Na,Ca, )₈(Al₆Si₆)O₂₄(CO₃,SO₄)₂·2H₂O			1	116855	232
Chalcopyrite ()*	Chalcopyrite	CuFeS₂			2	116849,116867	27198
Chromite ()*	Spinel	Fe²⁺Cr₂O₄			1	116865	3902
Copper ()*	Copper	Cu			1	116865	3846
Covellite ()*	Covellite	CuS			1	116849	4165
Crandallite ()*	Alunite	CaAl₃(PO₄)(PO₃OH)(OH)₆	66	2.6	1	116857	310
Daubréelite ()*	Spinel	FeCr₂S₄			1	116865	157
Djerfisherite ()*	Djerfisherite	K₆(Fe,Cu,Ni)₂₅S₂₆Cl			1	116865	60
Dolomite ()*	None	CaMg(CO₃)₂			1	116867	9895
Fluorapatite ()*	Apatite	Ca₅(PO₄)₃F	66	2.6	3	116857,116865,116867	2740
Fluorapophyllite-(K) ()*	Apophyllite	KCa₄Si₈O₂₀F·8H₂O			1	116853	303
Galena ()*	Rocksalt	PbS			2	116849,116867	24243
Goethite ()*	Diaspore	FeO(OH)	66	2.6	3	116849,116857,116867	7437
Gold ()*	Copper	Au			3	116848,116849,116867	30554
Gorceixite ()*	Alunite	BaAl₃(PO₄)(PO₃OH)(OH)₆			1	116867	121
Graphite ()*	None	C			1	116865	2812
Hematite ()*	Corundum	Fe₂O₃	66	2.6	2	116857,116867	14640
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃			2	116849,116867	5433
Iron ()*	Iron	Fe			2	116861,116865	1089
Isocubanite ()*	Sphalerite Cubanite	CuFe₂S₃			1	116865	191
Mackinawite ()*	None	(Fe,Ni)_1+xS (x = 0-0.07)			1	116865	451
Magnesio-arfvedsonite ()*	Amphibole	NaNa₂(Mg₄Fe³⁺)Si₈O₂₂(OH)₂	40	40	1	116868	79
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	66	2.6	5	116849,116853,116857,116867,116868	14899
Microcline ()*	Feldspar	K(AlSi₃O₈)	40	40	2	116855,116868	4924
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂			1	116849	17380
Natrolite ()*	Natrolite	Na₂(Si₃Al₂)O₁₀·2H₂O			1	116853	1236
Nepheline ()*	Tridymite	Na₃K(Al₄Si₄O₁₆)	40	40	1	116868	884
Pentlandite ()*	Pentlandite	(Ni,Fe)₉S₈			1	116865	1512
Perovskite ()*	Perovskite	CaTiO₃			1	116867	495
Phlogopite ()*	Mica Clay	KMg₃(AlSi₃O₁₀)(OH)₂	40	40	2	116867,116868	2273
Pyrite ()*	Pyrite	FeS₂			1	116849	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈			2	116849,116867	9056
Quartz ()*	Quartz	SiO₂	40	40	5	116848,116849,116862,116867,116868	61156
Richterite ()*	Amphibole	Na(NaCa)Mg₅Si₈O₂₂(OH)₂	40	40	1	116868	148
Rutile ()*	Rutile	TiO₂			2	116849,116867	5614
Schreibersite ()*	None	(Fe,Ni)₃P			1	116865	374
Shortite ()*	None	Na₂Ca₂(CO₃)₃			1	116867	37
Sphalerite ()*	Sphalerite	ZnS			2	116849,116865	21482
Taenite ()*	None	(Ni,Fe)			1	116865	703
Titanite ()*	Titanite	CaTi(SiO₄)O			2	116849,116855	4899
Troilite ()*	None	FeS			1	116865	1044
Vermiculite ()*	Clay Smectite-vermiculite	Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄·8H₂O	66	2.6	3	116857,116863,116867	652
Zircon ()*	Zircon	Zr(SiO₄)	66	2.6	2	116857,116867	5251
Zoisite ()*	Epidote	Ca₂Al₃[Si₂O₇][SiO₄]O(OH)			1	116849	1025

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Jen_0000400	carbonatite complex with transitional alkali basalt composition
Jen_0000406	carbonatite complex with transitional alkali basalt composition
Jen_0000642	MAGMATIC STYLE: Arcuate (?cone sheets) and irregular intrusions. ASSOCIATED SILICATE ROCKS: Melteigite, ijolite, pyroxenite, hornblendite, nepheline syenite, phoscorite, vent agglomerate, carbonated silicate rocks and K-rich fenites.
Jen_0000643	MAGMATIC STYLE: Arcuate (?cone sheets) and irregular intrusions. ASSOCIATED SILICATE ROCKS: Melteigite, ijolite, pyroxenite, hornblendite, nepheline syenite, phoscorite, vent agglomerate, carbonated silicate rocks and K-rich fenites.
Jen_0000644	MAGMATIC STYLE: Arcuate (?cone sheets) and irregular intrusions. ASSOCIATED SILICATE ROCKS: Melteigite, ijolite, pyroxenite, hornblendite, nepheline syenite, phoscorite, vent agglomerate, carbonated silicate rocks and K-rich fenites.

6 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Sample Source	Minerals explicitely stated as having this age	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID
Jen_0000400	27.5	22.5	25±2.5	K-Ar			274363	Bukusu Complex, Mbale District, Eastern Region, Uganda	Bukusu Complex	Ernst and Bell (2010)	10.1007/s00710-009-0074-1	MP98_55
Jen_0000642	32.5	32.5	32.5				274363	Bukusu Complex, Mbale District, Eastern Region, Uganda	Bukusu	Woolley and Kjarsgaard (2008)	10.4095/225115	GSCOF5796
Jen_0000643	27.5	22.5	25±2.5	K-Ar	biotite		274363	Bukusu Complex, Mbale District, Eastern Region, Uganda	Bukusu	Woolley and Kjarsgaard (2008)	10.4095/225115	GSCOF5796
Jen_0000644	40	40	40	Nd, Sr			274363	Bukusu Complex, Mbale District, Eastern Region, Uganda	Bukusu	Woolley and Kjarsgaard (2008)	10.4095/225115	GSCOF5796
ree-00642	66	2.6	Tertiary				30485	Busumbu Deposit, Bukusu Complex, Mbale District, Eastern Region, Uganda	Bukusu Complex (Busumbu, Busumu, Busuku)	Orris and Grauch (2002)		USGSOFR02_189
Jen_0000406	40	40	40	Nd-Sr		Calcite	209284	Tororo Complex, Tororo District, Eastern Region, Uganda	Toror Complex	Ernst and Bell (2010)	10.1007/s00710-009-0074-1	MP98_55

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...