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:
Fort Portal, Kabarole District, Western Region, Uganda

Oldest recorded age at locality: 6000
Youngest recorded age at locality: 0.4

mindat Locality ID: 3273
mindat URL: http://www.mindat.org/loc-3273.html

Tectonic Settings:

Total number of sublocalities beneath "Fort Portal, Kabarole District, Western Region, Uganda": 2
Total number of bottom-level sublocalities: 1

Number of Child Localities: 1
Child Localities:
Ndale Area

Latitude: 0°41'59"N
Longitude: 30°15'0"E
Decimal Degree (lat, lon): 0.69972222222222,30.25

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.

Apatite	Baryte	Calcite	Clay	Clinozoisite	Corundum	Epidote	Ettringite	Garnet	Humite
Melilite	Mica	Nickeline	None	Not in a structural group	Olivine	Perovskite	Pyrite	Pyroxene	Quartz
Rocksalt	Spinel	Spurrite-Afwillite	Titanite	Zircon

Almandine ()*	Anatase ()*	Baryte ()*	Calcite ()*	Diopside ()*
Epidote ()*	Gehlenite ()*	Hydroxylapatite ()*	Ilmenite ()*	Jennite ()*
Magnetite ()*	Monticellite ()*	Periclase ()*	Perovskite ()*	Phlogopite ()*
Pyrite ()*	Pyrrhotite ()*	Quartz ()*	Reinhardbraunsite ()*	Spinel ()*
Spurrite ()*	Thaumasite ()*	Titanite ()*	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 Ba C Ca Fe H K Mg O P S Si Ti Zr

Elements from minerals reported directly at this locality: Al Ba C Ca Fe H K Mg O P S Si Ti

Structural Groups for minerals in this locality:
Apatite Baryte Calcite Clay Clinozoisite Corundum Epidote Ettringite Garnet Humite
Melilite Mica Nickeline None Not in a structural group Olivine Perovskite Pyrite Pyroxene Quartz
Rocksalt Spinel Spurrite-Afwillite Titanite Zircon

24 IMA Minerals at location:

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
Almandine ()*	Garnet	Fe²⁺₃Al₂(SiO₄)₃	0.6	0.4	1	116887	2353
Anatase ()*	Not in a structural group	TiO₂	0.6	0.4	1	116887	2162
Baryte ()*	Baryte	Ba(SO₄)	0.6	0.4	0		11547
Calcite ()*	Calcite	Ca(CO₃)	0.6	0.4	1	116887	27770
Diopside ()*	Pyroxene	CaMgSi₂O₆	0.6	0.4	1	116887	4135
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	0.6	0.4	1	116887	8173
Gehlenite ()*	Melilite	Ca₂Al(SiAl)O₇	0.6	0.4	0		114
Hydroxylapatite ()*	Apatite	Ca₅(PO₄)₃OH	0.6	0.4	0		367
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	0.6	0.4	1	116887	5433
Jennite ()*	None	Ca₉(Si₃O₉)₂(OH)₆·8H₂O	0.6	0.4	0		18
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	0.6	0.4	1	116887	14899
Monticellite ()*	Olivine	CaMg(SiO₄)	0.6	0.4	0		153
Periclase ()*	Rocksalt	MgO	0.6	0.4	0		114
Perovskite ()*	Perovskite	CaTiO₃	0.6	0.4	0		495
Phlogopite ()*	Mica Clay	KMg₃(AlSi₃O₁₀)(OH)₂	0.6	0.4	0		2273
Pyrite ()*	Pyrite	FeS₂	0.6	0.4	1	116887	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	0.6	0.4	0		9056
Quartz ()*	Quartz	SiO₂	0.6	0.4	1	116887	61156
Reinhardbraunsite ()*	Humite	Ca₅(SiO₄)₂(OH)₂	0.6	0.4	0		9
Spinel ()*	Spinel	MgAl₂O₄	0.6	0.4	0		1934
Spurrite ()*	Spurrite-Afwillite	Ca₅(SiO₄)₂(CO₃)	0.6	0.4	0		54
Thaumasite ()*	Ettringite	Ca₃Si(OH)₆(CO₃)(SO₄)·12H₂O	0.6	0.4	0		183
Titanite ()*	Titanite	CaTi(SiO₄)O	0.6	0.4	1	116887	4899
Zircon ()*	Zircon	Zr(SiO₄)	0.6	0.4	1	116887	5251

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Jen_0000401	carbonatite complex with transitional alkali basalt composition
Jen_0000560	MAGMATIC STYLE: 142 km2 of flaggy and lapilli tuffs up to several metres thick and 500 m long and 1-5 m thick lava flow. Also ring and radial dykes and small plug. ASSOCIATED SILICATE ROCKS: Tuffs with some calcite and melilite and containing lherzolite xenoliths.

2 Ages assigned to this locality:

	Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Prioritized?	Sample Source	Sample Num	Run Num	Age from other Locality	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
	Jen_0000401	6000	4000	6000-4000			low								3273	Fort Portal, Kabarole District, Western Region, Uganda	Fort Portal	Ernst and Bell (2010)	10.1007/s00710-009-0074-1	MP98_55
	Jen_0000560	0.6	0.4	0.6-0.4	C14										3273	Fort Portal, Kabarole District, Western Region, Uganda	Fort Portal and Kasekere	Woolley and Kjarsgaard (2008)	10.4095/225115	GSCOF5796

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...