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:
Freetown Layered Complex, Western Area, Sierra Leone

mindat Locality ID: 18857
mindat URL: http://www.mindat.org/loc-18857.html

Tectonic Settings:

Total number of sublocalities beneath "Freetown Layered Complex, Western Area, Sierra Leone": 2
Total number of bottom-level sublocalities: 2

Number of Child Localities: 2
Child Localities:
Big Water
Guma Water

Latitude: 8°19'32"N
Longitude: 13°10'46"W
Decimal Degree (lat, lon): 8.3255555555556,-13.179444444444

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.

Auricupride	Baddeleyite	Bowieite	Chalcopyrite	Copper	Corundum	Diaspore	Nickeline	None	Olivine
Pentlandite	Perovskite	Potarite	Pyrite	Pyroxene	Quartz	Rocksalt	Rutile	Sphalerite	Spinel
Zircon

Augite ()*	Baddeleyite ()*	Bornite ()*	Bowieite ()*	Braggite ()*
Chalcopyrite ()*	Chromite ()*	Cooperite ()*	Cuproiridsite ()*	Cuprorhodsite ()*
Erlichmanite ()*	Forsterite ()*	Galena ()*	Gibbsite ()*	Goethite ()*
Hematite ()*	Hongshiite ()*	Ilmenite ()*	Irarsite ()*	Isoferroplatinum ()*
Keithconnite ()*	Laurite ()*	Maghemite ()*	Magnetite ()*	Miassite ()*
Osmium ()*	Pentlandite ()*	Platinum ()*	Pyrrhotite ()*	Quartz ()*
Rutile ()*	Sphalerite ()*	Tulameenite ()*	Vysotskite ()*	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 As Ca Cr Cu Fe H Ir Mg Ni O Os Pb Pd Pt Rh Ru S Si Te Ti Zn Zr

Elements from minerals reported directly at this locality: Ca Cr Cu Fe Mg Ni O Pd Pt Rh S Si Te

Structural Groups for minerals in this locality:
Auricupride Baddeleyite Bowieite Chalcopyrite Copper Corundum Diaspore Nickeline None Olivine
Pentlandite Perovskite Potarite Pyrite Pyroxene Quartz Rocksalt Rutile Sphalerite Spinel
Zircon

35 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Augite ()*	Pyroxene	(Ca,Mg,Fe)₂Si₂O₆	0		2060
Baddeleyite ()*	Baddeleyite	ZrO₂	1	104888	238
Bornite ()*	None	Cu₅FeS₄	0		5516
Bowieite ()*	Bowieite	Rh₂S₃	0		33
Braggite ()*	None	PdPt₃S₄	1	104888	101
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	0		27198
Chromite ()*	Spinel	Fe²⁺Cr₂O₄	0		3902
Cooperite ()*	None	PtS	1	104888	124
Cuproiridsite ()*	Spinel	Cu(Ir³⁺Ir⁴⁺)S₄	1	104888	31
Cuprorhodsite ()*	Spinel	(Cu¹⁺_0.5Fe³⁺_0.5)Rh³⁺₂S₄	1	104888	34
Erlichmanite ()*	Pyrite	OsS₂	1	104888	110
Forsterite ()*	Olivine	Mg₂(SiO₄)	0		1188
Galena ()*	Rocksalt	PbS	1	104888	24243
Gibbsite ()*	None	Al(OH)₃	1	104888	504
Goethite ()*	Diaspore	FeO(OH)	1	104888	7437
Hematite ()*	Corundum	Fe₂O₃	1	104888	14640
Hongshiite ()*	None	PtCu	1	104888	27
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	1	104888	5433
Irarsite ()*	Pyrite	IrAsS	1	104888	154
Isoferroplatinum ()*	Auricupride Perovskite	Pt₃Fe	1	104888	128
Keithconnite ()*	None	Pd₂₀Te₇	0		40
Laurite ()*	Pyrite	RuS₂	1	104888	226
Maghemite ()*	Spinel	(Fe³⁺_0.67 _0.33)Fe³⁺₂O₄	1	104888	229
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	1	104888	14899
Miassite ()*	None	Rh₁₇S₁₅	0		10
Osmium ()*	None	Os	1	104888	169
Pentlandite ()*	Pentlandite	(Ni,Fe)₉S₈	0		1512
Platinum ()*	Copper	Pt	0		485
Pyrrhotite ()*	Nickeline	Fe₇S₈	0		9056
Quartz ()*	Quartz	SiO₂	1	104888	61156
Rutile ()*	Rutile	TiO₂	1	104888	5614
Sphalerite ()*	Sphalerite	ZnS	1	104888	21482
Tulameenite ()*	Potarite	Pt₂CuFe	1	104888	48
Vysotskite ()*	None	PdS	1	104888	53
Zircon ()*	Zircon	Zr(SiO₄)	1	104888	5251

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...