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:
Gatumba Pegmatite, Gatumba, Ngororero District, Western Province, Rwanda

Oldest recorded age at locality: 980
Youngest recorded age at locality: 930

mindat Locality ID: 221139
mindat URL: http://www.mindat.org/loc-221139.html

Tectonic Settings:

Total number of sublocalities beneath "Gatumba Pegmatite, Gatumba, Ngororero District, Western Province, Rwanda": 0
Total number of bottom-level sublocalities: 0

Latitude: 1°56'"S
Longitude: 29°39'0"E
Decimal Degree (lat, lon): -1.9333333333333,29.65

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.

Beryl	Clay	Feldspar	Marcasite	Mica	None	Quartz	Rutile

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 Be F Fe H K Li Na O P S Si Sn

Elements from minerals reported directly at this locality: Al Be F Fe H K Li Na O P S Si Sn

Structural Groups for minerals in this locality:
Beryl Clay Feldspar Marcasite Mica None Quartz Rutile

7 IMA Minerals at location:

Albite ()*	Amblygonite ()*	Beryl ()*	Cassiterite ()*	Marcasite ()*
Muscovite ()*	Quartz ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Albite ()*	Feldspar	Na(AlSi₃O₈)	975	930	8803
Amblygonite ()*	None	LiAl(PO₄)F	975	930	244
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈	975	930	4286
Cassiterite ()*	Rutile	SnO₂	975	930	5171
Marcasite ()*	Marcasite	FeS₂	975	930	5674
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	975	930	17380
Quartz ()*	Quartz	SiO₂	975	930	61156

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
	Alexandra-0166	975	930	975-930	U-Pb	Age of pegmatite		columbite, tantalite	coltan 48						221139	Gatumba Pegmatite, Gatumba, Ngororero District, Western Province, Rwanda	Gatumba Pegmatite	Dewaele et al. (2011)	10.1016/j.jafrearsci.2011.04.004	JAES61_10
	Grew_Li_2019_0007	980	980	980							Yes		Bertossaite		58310	Rubindi Pegmatite (Kabilizi), Gatumba, Ngororero District, Western Province, Rwanda	Rubindi and Buranga (type) pegmatites, Gatumba district, Western Province, Rwanda	Hulsbosch et al. (2013, 2014)		GB16_105, GCA132_349

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...