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:
Otjiwarongo, Otjozondjupa Region, Namibia

Oldest recorded age at locality: 133.9
Youngest recorded age at locality: 119.3

mindat Locality ID: 125853
mindat URL: http://www.mindat.org/loc-125853.html

Tectonic Settings:

Total number of sublocalities beneath "Otjiwarongo, Otjozondjupa Region, Namibia": 1
Total number of bottom-level sublocalities: 1

Number of Child Localities: 1
Child Localities:
Okorusu Mine (Okarusu Mine)

Latitude: 20°3'"S
Longitude: 16°44'42"E
Decimal Degree (lat, lon): -20.05,16.745

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	Aragonite	Baryte	Bixbyite	Calcite	Cancrinite	Chalcopyrite	Clay	Corundum	Diaspore
Fluorite	Garnet	Mica	Nickeline	None	Pyrite	Pyroxene	Quartz	Rocksalt	Sphalerite
Spinel	Titanite	Tridymite	Zircon

Aegirine ()*	Aegirine-augite ()*	Andradite ()*	Baryte ()*	Bixbyite ()*
Calcite ()*	Cancrinite ()*	Celestine ()*	Chalcopyrite ()*	Diopside ()*
Fluorapatite ()*	Fluorite ()*	Galena ()*	Goethite ()*	Hematite ()*
Magnetite ()*	Nepheline ()*	Phlogopite ()*	Pyrite ()*	Pyrrhotite ()*
Quartz ()*	Sphalerite ()*	Strontianite ()*	Thorite ()*	Titanite ()*
Xenotime-(Y) ()*

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 Cu F Fe H K Mg Mn Na O P Pb S Si Sr Th Ti Y Zn

Elements from minerals reported directly at this locality: Mn O

Structural Groups for minerals in this locality:
Apatite Aragonite Baryte Bixbyite Calcite Cancrinite Chalcopyrite Clay Corundum Diaspore
Fluorite Garnet Mica Nickeline None Pyrite Pyroxene Quartz Rocksalt Sphalerite
Spinel Titanite Tridymite Zircon

26 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
Aegirine ()*	Pyroxene	NaFe³⁺Si₂O₆	133.9	119.3	1	87002	1022
Aegirine-augite ()*	Pyroxene	(Ca,Na)(Fe³⁺,Mg,Fe²⁺)Si₂O₆	133.9	119.3	1	87002	286
Andradite ()*	Garnet	Ca₃Fe³⁺₂(SiO₄)₃	133.9	119.3	1	87002	1534
Baryte ()*	Baryte	Ba(SO₄)	133.9	119.3	1	87002	11547
Bixbyite ()*	Bixbyite	Mn³⁺₂O₃	133.9	119.3	0		104
Calcite ()*	Calcite	Ca(CO₃)	133.9	119.3	1	87002	27770
Cancrinite ()*	Cancrinite	(Na,Ca, )₈(Al₆Si₆)O₂₄(CO₃,SO₄)₂·2H₂O	133.9	119.3	1	87002	232
Celestine ()*	Baryte	Sr(SO₄)	133.9	119.3	1	87002	1252
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	133.9	119.3	1	87002	27198
Diopside ()*	Pyroxene	CaMgSi₂O₆	133.9	119.3	1	87002	4135
Fluorapatite ()*	Apatite	Ca₅(PO₄)₃F	133.9	119.3	1	87002	2740
Fluorite ()*	Fluorite	CaF₂	133.9	119.3	1	87002	9617
Galena ()*	Rocksalt	PbS	133.9	119.3	1	87002	24243
Goethite ()*	Diaspore	FeO(OH)	133.9	119.3	1	87002	7437
Hematite ()*	Corundum	Fe₂O₃	133.9	119.3	1	87002	14640
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	133.9	119.3	1	87002	14899
Nepheline ()*	Tridymite	Na₃K(Al₄Si₄O₁₆)	133.9	119.3	1	87002	884
Phlogopite ()*	Mica Clay	KMg₃(AlSi₃O₁₀)(OH)₂	133.9	119.3	1	87002	2273
Pyrite ()*	Pyrite	FeS₂	133.9	119.3	1	87002	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	133.9	119.3	1	87002	9056
Quartz ()*	Quartz	SiO₂	133.9	119.3	1	87002	61156
Sphalerite ()*	Sphalerite	ZnS	133.9	119.3	1	87002	21482
Strontianite ()*	Aragonite	Sr(CO₃)	133.9	119.3	1	87002	589
Thorite ()*	Zircon	Th(SiO₄)	133.9	119.3	1	87002	1006
Titanite ()*	Titanite	CaTi(SiO₄)O	133.9	119.3	1	87002	4899
Xenotime-(Y) ()*	Zircon	Y(PO₄)	133.9	119.3	1	87002	939

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Jen_0000739	MAGMATIC STYLE: Small plugs ASSOCIATED SILICATE ROCKS: Monzonite, syenite, nepheline syenite, nephelinite, pyroxenite, iron deposits and fenite.

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_0000739	133.9	119.3	126.6±7.3	Rb-Sr										5842	Okorusu Mine (Okarusu Mine), Otjiwarongo, Otjozondjupa Region, Namibia	Okorusu	Woolley and Kjarsgaard (2008)	10.4095/225115	GSCOF5796
	ree-00481	133.9	119.3	Early Cretaceous-- 126.6 ± 7.3 Ma (Rb-Sr)	Rb-Sr										5842	Okorusu Mine (Okarusu Mine), Otjiwarongo, Otjozondjupa Region, Namibia	Okorusu Complex	Orris and Grauch (2002)		USGSOFR02_189

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...