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:
Northern Province, Sierra Leone

mindat Locality ID: 226745
mindat URL: http://www.mindat.org/loc-226745.html

Tectonic Settings:

Total number of sublocalities beneath "Northern Province, Sierra Leone": 4
Total number of bottom-level sublocalities: 3

Number of Child Localities: 3
Child Localities:
Bombali District
Sewa River
Tonkolili

Latitude: 8°50'31"N
Longitude: 11°41'32"W
Decimal Degree (lat, lon): 8.8419444444444,-11.692222222222

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.

Amphibole	Arsenopyrite	Clinozoisite	Copper	Corundum	Diamond	Diaspore	Epidote	None	Olivine
Pyrite	Quartz	Rutile	Spinel

Arsenopyrite ()*	Diamond ()*	Epidote ()*	Forsterite ()*	Gibbsite ()*
Goethite ()*	Gold ()*	Hematite ()*	Ilmenite ()*	Magnetite ()*
Pyrite ()*	Quartz ()*	Rutile ()*	Tremolite ()*

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 Au C Ca Fe H Mg O S Si Ti

Elements from minerals reported directly at this locality: Al As Au Ca Fe H Mg O S Si Ti

Structural Groups for minerals in this locality:
Amphibole Arsenopyrite Clinozoisite Copper Corundum Diamond Diaspore Epidote None Olivine
Pyrite Quartz Rutile Spinel

14 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Arsenopyrite ()*	Arsenopyrite	FeAsS	0		9052
Diamond ()*	Diamond	C	2	104879,104880	697
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	0		8173
Forsterite ()*	Olivine	Mg₂(SiO₄)	0		1188
Gibbsite ()*	None	Al(OH)₃	0		504
Goethite ()*	Diaspore	FeO(OH)	0		7437
Gold ()*	Copper	Au	0		30554
Hematite ()*	Corundum	Fe₂O₃	0		14640
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	0		5433
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	0		14899
Pyrite ()*	Pyrite	FeS₂	0		39462
Quartz ()*	Quartz	SiO₂	0		61156
Rutile ()*	Rutile	TiO₂	0		5614
Tremolite ()*	Amphibole	Ca₂(Mg_5.0-4.5Fe²⁺_0.0-0.5)Si₈O₂₂(OH)₂	0		2562

No ages have been assigned to this locality yet.

All locality data graciously provided by mindat.org

All age data...