Mineral Evolution Database

Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.

Mineral locality data provided by mindat.org

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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:
Omatako, Otjozondjupa Region, Namibia

Oldest recorded age at locality: 201
Youngest recorded age at locality: 145

mindat Locality ID: 300093
mindat URL: http://www.mindat.org/loc-300093.html

Tectonic Settings:

Total number of sublocalities beneath "Omatako, Otjozondjupa Region, Namibia": 13
Total number of bottom-level sublocalities: 12

Number of Child Localities: 9
Child Localities:
Good Hope Farm 298
Highlands Farm 311
Joumbira Farm 131
Kalkfeld
Okahua Farm 418
Okanjande Farm 145
Otjoruharui Farm 251
Otjosondu
Troye Farm 253 (Troye Mine)

Latitude: 20°50'6"S
Longitude: 17°6'0"E
Decimal Degree (lat, lon): -20.835,17.1

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	Apatite	Aragonite	Baryte	Bixbyite	Braunite	Burbankite	Calcite	Carbocernaite	Clay
Clinozoisite	Coronadite	Corundum	Descloizite	Diaspore	Epidote	Eudialyte	Feldspar	Fluorite	Garnet
Humite	Mica	None	Olivine	Perovskite	Pyrite	Pyroxene	Quartz	Rhodonite	Rocksalt
Rutile	Scapolite	Scheelite	Smectite-vermiculite	Sphalerite	Spinel	Titanite	Tourmaline	Tridymite	Wollastonite
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 B Ba C Ca Ce Cl Cr Cu F Fe H K La Li Mg Mn Mo Na O P Pb S Si Sn Sr Ti V Zn Zr

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Amphibole Apatite Aragonite Baryte Bixbyite Braunite Burbankite Calcite Carbocernaite Clay
Clinozoisite Coronadite Corundum Descloizite Diaspore Epidote Eudialyte Feldspar Fluorite Garnet
Humite Mica None Olivine Perovskite Pyrite Pyroxene Quartz Rhodonite Rocksalt
Rutile Scapolite Scheelite Smectite-vermiculite Sphalerite Spinel Titanite Tourmaline Tridymite Wollastonite
Zircon

73 IMA Minerals at location:

Actinolite ()*	Aegirine ()*	Aegirine-augite ()*	Albite ()*	Andradite ()*
Ankerite ()*	Baryte ()*	Bixbyite ()*	Braunite ()*	Burbankite ()*
Bustamite ()*	Calcite ()*	Calderite ()*	Carbocernaite ()*	Cassiterite ()*
Celsian ()*	Cerianite-(Ce) ()*	Cerussite ()*	Chalcocite ()*	Chalcophanite ()*
Clino-suenoite ()*	Clinohumite ()*	Clinozoisite ()*	Cryolite ()*	Descloizite ()*
Diopside ()*	Dolomite ()*	Elbaite ()*	Epidote ()*	Eudialyte ()*
Ferri-ghoseite ()*	Fluorapatite ()*	Fluorite ()*	Forsterite ()*	Galena ()*
Goethite ()*	Graphite ()*	Halite ()*	Hausmannite ()*	Hematite ()*
Hollandite ()*	Jacobsite ()*	Kinoshitalite ()*	Magnesio-riebeckite ()*	Magnetite ()*
Meionite ()*	Mimetite ()*	Muscovite ()*	Nahcolite ()*	Nepheline ()*
Orthoclase ()*	Phlogopite ()*	Pyrite ()*	Pyrolusite ()*	Pyromorphite ()*
Pyrophanite ()*	Quartz ()*	Rhodonite ()*	Rouvilleite ()*	Rutile ()*
Spessartine ()*	Sphalerite ()*	Spinel ()*	Strontianite ()*	Sylvite ()*
Titanite ()*	Vanadinite ()*	Vauquelinite ()*	Vermiculite ()*	Winchite ()*
Wollastonite ()*	Wulfenite ()*	Zircon ()*

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
Actinolite ()*	Amphibole	Ca₂(Mg_4.5-2.5Fe²⁺_0.5-2.5)Si₈O₂₂(OH)₂			1	86965	3419
Aegirine ()*	Pyroxene	NaFe³⁺Si₂O₆			1	86961	1022
Aegirine-augite ()*	Pyroxene	(Ca,Na)(Fe³⁺,Mg,Fe²⁺)Si₂O₆			1	86966	286
Albite ()*	Feldspar	Na(AlSi₃O₈)	172.8	153.6	3	86960,86965,86966	8803
Andradite ()*	Garnet	Ca₃Fe³⁺₂(SiO₄)₃			1	86966	1534
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	172.8	153.6	2	86960,86961	3092
Baryte ()*	Baryte	Ba(SO₄)	201	145	4	86959,86960,86961,86966	11547
Bixbyite ()*	Bixbyite	Mn³⁺₂O₃			1	86966	104
Braunite ()*	Braunite	Mn²⁺Mn³⁺₆O₈(SiO₄)			1	86966	483
Burbankite ()*	Burbankite	(Na,Ca)₃(Sr,Ba,Ce)₃(CO₃)₅	172.8	153.6	1	86960	52
Bustamite ()*	Wollastonite	Mn₂Ca₂MnCa(Si₃O₉)₂			1	86966	101
Calcite ()*	Calcite	Ca(CO₃)	172.8	153.6	5	86960,86961,86963,86965,86966	27770
Calderite ()*	Garnet	Mn²⁺₃Fe³⁺₂(SiO₄)₃			1	86966	17
Carbocernaite ()*	Carbocernaite	(Sr,Ce,La)(Ca,Na)(CO₃)₂	172.8	153.6	2	86960,86961	24
Cassiterite ()*	Rutile	SnO₂			1	86965	5171
Celsian ()*	Feldspar	Ba(Al₂Si₂O₈)			1	86966	100
Cerianite-(Ce) ()*	Fluorite	CeO₂			1	86961	94
Cerussite ()*	Aragonite	Pb(CO₃)			1	86965	4979
Chalcocite ()*	None	Cu₂S	201	145	2	86959,86960	5707
Chalcophanite ()*	None	ZnMn⁴⁺₃O₇·3H₂O			1	86966	197
Clino-suenoite ()*	Amphibole	Mn²⁺₂Mg₅Si₈O₂₂(OH)₂			2	86966	57
Clinohumite ()*	Humite	Mg₉(SiO₄)₄F₂			1	86963	236
Clinozoisite ()*	Clinozoisite Epidote	Ca₂Al₃[Si₂O₇][SiO₄]O(OH)			1	86957	1025
Cryolite ()*	Perovskite	Na₂NaAlF₆	172.8	153.6	1	86960	50
Descloizite ()*	Descloizite	PbZn(VO₄)(OH)			1	86965	378
Diopside ()*	Pyroxene	CaMgSi₂O₆			2	86963,86966	4135
Dolomite ()*	None	CaMg(CO₃)₂			2	86961,86963	9895
Elbaite ()*	Tourmaline	Na(Al_1.5Li_1.5)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)			1	86965	520
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)			1	86963	8173
Eudialyte ()*	Eudialyte	Na₁₅Ca₆Fe₃Zr₃Si(Si₂₅O₇₃)(O,OH,H₂O)₃(Cl,OH)₂	201	145	2	86959,86960	182
Ferri-ghoseite ()*	Amphibole	(NaMn²⁺)(Mg₄Fe³⁺)Si₈O₂₂(OH)₂			1	86966	14
Fluorapatite ()*	Apatite	Ca₅(PO₄)₃F			1	86962	2740
Fluorite ()*	Fluorite	CaF₂	172.8	153.6	1	86960	9617
Forsterite ()*	Olivine	Mg₂(SiO₄)			1	86963	1188
Galena ()*	Rocksalt	PbS			1	86961	24243
Goethite ()*	Diaspore	FeO(OH)			1	86961	7437
Graphite ()*	None	C			3	86955,86956,86964	2812
Halite ()*	Rocksalt	NaCl	172.8	153.6	1	86960	1398
Hausmannite ()*	Spinel	Mn²⁺Mn³⁺₂O₄			1	86966	350
Hematite ()*	Corundum	Fe₂O₃	172.8	153.6	3	86960,86961,86966	14640
Hollandite ()*	Coronadite	Ba(Mn⁴⁺₆Mn³⁺₂)O₁₆			1	86966	243
Jacobsite ()*	Spinel	Mn²⁺Fe³⁺₂O₄			1	86966	172
Kinoshitalite ()*	Mica Clay	BaMg₃(Si₂Al₂O₁₀)(OH)₂			1	86966	20
Magnesio-riebeckite ()*	Amphibole	Na₂(Mg₃Fe³⁺₂)Si₈O₂₂(OH)₂			1	86966	93
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	201	145	4	86959,86960,86961,86966	14899
Meionite ()*	Scapolite	Ca₄Al₆Si₆O₂₄(CO₃)			1	86963	176
Mimetite ()*	Apatite	Pb₅(AsO₄)₃Cl			1	86965	1107
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂			2	86965,86966	17380
Nahcolite ()*	None	NaH(CO₃)	172.8	153.6	1	86960	78
Nepheline ()*	Tridymite	Na₃K(Al₄Si₄O₁₆)	172.8	153.6	1	86960	884
Orthoclase ()*	Feldspar	K(AlSi₃O₈)			1	86965	2349
Phlogopite ()*	Mica Clay	KMg₃(AlSi₃O₁₀)(OH)₂	172.8	153.6	2	86960,86963	2273
Pyrite ()*	Pyrite	FeS₂	201	145	3	86959,86960,86961	39462
Pyrolusite ()*	Rutile	MnO₂			1	86966	3106
Pyromorphite ()*	Apatite	Pb₅(PO₄)₃Cl			1	86965	1725
Pyrophanite ()*	Corundum	Mn²⁺TiO₃			1	86966	244
Quartz ()*	Quartz	SiO₂	201	145	6	86959,86960,86961,86965,86966,86967	61156
Rhodonite ()*	Rhodonite	CaMn₃Mn(Si₅O₁₅)			1	86966	969
Rouvilleite ()*	None	Na₃Ca₂(CO₃)₃F	172.8	153.6	1	86960	3
Rutile ()*	Rutile	TiO₂			1	86964	5614
Spessartine ()*	Garnet	Mn²⁺₃Al₂(SiO₄)₃			1	86966	1214
Sphalerite ()*	Sphalerite	ZnS	172.8	153.6	1	86960	21482
Spinel ()*	Spinel	MgAl₂O₄			1	86963	1934
Strontianite ()*	Aragonite	Sr(CO₃)	172.8	153.6	2	86960,86961	589
Sylvite ()*	Rocksalt	KCl	172.8	153.6	1	86960	275
Titanite ()*	Titanite	CaTi(SiO₄)O	201	145	3	86959,86960,86963	4899
Vanadinite ()*	Apatite	Pb₅(VO₄)₃Cl			1	86965	605
Vauquelinite ()*	None	CuPb₂(CrO₄)(PO₄)(OH)			1	86965	63
Vermiculite ()*	Clay Smectite-vermiculite	Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄·8H₂O			1	86961	652
Winchite ()*	Amphibole	(NaCa)(Mg₄Al)Si₈O₂₂(OH)₂			1	86966	51
Wollastonite ()*	Wollastonite	CaSiO₃			1	86963	1247
Wulfenite ()*	Scheelite	PbMoO₄			1	86965	1655
Zircon ()*	Zircon	Zr(SiO₄)			1	86961	5251

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Jen_0000462	Africa carbonatite complex
Jen_0000780	MAGMATIC STYLE: Central 2.6 km2 plug ASSOCIATED SILICATE ROCKS: Foyaite, syenite, fenite and dykes of tinguaite.
Jen_0000781	MAGMATIC STYLE: Central 2.6 km2 plug ASSOCIATED SILICATE ROCKS: Foyaite, syenite, fenite and dykes of tinguaite.
Jen_0000782	MAGMATIC STYLE: Central 2.6 km2 plug ASSOCIATED SILICATE ROCKS: Foyaite, syenite, fenite and dykes of tinguaite.

5 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Sample Source	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID
ree-00478	201	145	Jurassic			158049	Etaneno, Kalkfeld, Omatako, Otjozondjupa Region, Namibia	Kalkfeld (Etaneno)	Orris and Grauch (2002)		USGSOFR02_189
Jen_0000462	172.8	153.6	172.8-153.6	K-Ar		73245	Kalkfeld Complex, Kalkfeld, Omatako, Otjozondjupa Region, Namibia	Kalkfeld Complex	Ernst and Bell (2010)	10.1007/s00710-009-0074-1	MP98_55
Jen_0000780	163.2	163.2	163.2	K-Ar	biotite	73245	Kalkfeld Complex, Kalkfeld, Omatako, Otjozondjupa Region, Namibia	Kalkfeld	Woolley and Kjarsgaard (2008)	10.4095/225115	GSCOF5796
Jen_0000781	153.6	153.6	153.6	K-Ar	biotite	73245	Kalkfeld Complex, Kalkfeld, Omatako, Otjozondjupa Region, Namibia	Kalkfeld	Woolley and Kjarsgaard (2008)	10.4095/225115	GSCOF5796
Jen_0000782	172.8	172.8	172.8	K-Ar	biotite	73245	Kalkfeld Complex, Kalkfeld, Omatako, Otjozondjupa Region, Namibia	Kalkfeld	Woolley and Kjarsgaard (2008)	10.4095/225115	GSCOF5796

Sample	Source Locality	Reference URL
R070722	Otjosondu, Omatako, Otjozondjupa Region, Namibia	https://rruff.info/R070722

All locality data graciously provided by mindat.org

All age data...