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:
Kalkfeld, Omatako, Otjozondjupa Region, Namibia

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

mindat Locality ID: 157963
mindat URL: http://www.mindat.org/loc-157963.html

Tectonic Settings:

Total number of sublocalities beneath "Kalkfeld, Omatako, Otjozondjupa Region, Namibia": 4
Total number of bottom-level sublocalities: 4

Number of Child Localities: 4
Child Localities:
Etaneno
Kalkfeld Complex
Ondurukurume Complex (Ondumakorume)
Osongombe Complex

Latitude: 20°48'54"S
Longitude: 16°7'58"E
Decimal Degree (lat, lon): -20.815,16.132777777778

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	Burbankite	Calcite	Carbocernaite	Clay	Corundum	Diaspore	Eudialyte
Feldspar	Fluorite	Mica	None	Perovskite	Pyrite	Pyroxene	Quartz	Rocksalt	Smectite-vermiculite
Sphalerite	Spinel	Titanite	Tridymite	Zircon

Aegirine ()*	Albite ()*	Ankerite ()*	Baryte ()*	Burbankite ()*
Calcite ()*	Carbocernaite ()*	Cerianite-(Ce) ()*	Chalcocite ()*	Cryolite ()*
Dolomite ()*	Eudialyte ()*	Fluorapatite ()*	Fluorite ()*	Galena ()*
Goethite ()*	Halite ()*	Hematite ()*	Magnetite ()*	Nahcolite ()*
Nepheline ()*	Phlogopite ()*	Pyrite ()*	Quartz ()*	Rouvilleite ()*
Sphalerite ()*	Strontianite ()*	Sylvite ()*	Titanite ()*	Vermiculite ()*
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 Ba C Ca Ce Cl Cu F Fe H K La Mg Mn Na O P Pb S Si Sr Ti Zn Zr

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Apatite Aragonite Baryte Burbankite Calcite Carbocernaite Clay Corundum Diaspore Eudialyte
Feldspar Fluorite Mica None Perovskite Pyrite Pyroxene Quartz Rocksalt Smectite-vermiculite
Sphalerite Spinel Titanite Tridymite Zircon

31 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			1	86961	1022
Albite ()*	Feldspar	Na(AlSi₃O₈)	172.8	153.6	1	86960	8803
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	172.8	153.6	2	86960,86961	3092
Baryte ()*	Baryte	Ba(SO₄)	201	145	3	86959,86960,86961	11547
Burbankite ()*	Burbankite	(Na,Ca)₃(Sr,Ba,Ce)₃(CO₃)₅	172.8	153.6	1	86960	52
Calcite ()*	Calcite	Ca(CO₃)	172.8	153.6	2	86960,86961	27770
Carbocernaite ()*	Carbocernaite	(Sr,Ce,La)(Ca,Na)(CO₃)₂	172.8	153.6	2	86960,86961	24
Cerianite-(Ce) ()*	Fluorite	CeO₂			1	86961	94
Chalcocite ()*	None	Cu₂S	201	145	2	86959,86960	5707
Cryolite ()*	Perovskite	Na₂NaAlF₆	172.8	153.6	1	86960	50
Dolomite ()*	None	CaMg(CO₃)₂			1	86961	9895
Eudialyte ()*	Eudialyte	Na₁₅Ca₆Fe₃Zr₃Si(Si₂₅O₇₃)(O,OH,H₂O)₃(Cl,OH)₂	201	145	2	86959,86960	182
Fluorapatite ()*	Apatite	Ca₅(PO₄)₃F			1	86962	2740
Fluorite ()*	Fluorite	CaF₂	172.8	153.6	1	86960	9617
Galena ()*	Rocksalt	PbS			1	86961	24243
Goethite ()*	Diaspore	FeO(OH)			1	86961	7437
Halite ()*	Rocksalt	NaCl	172.8	153.6	1	86960	1398
Hematite ()*	Corundum	Fe₂O₃	172.8	153.6	2	86960,86961	14640
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	201	145	3	86959,86960,86961	14899
Nahcolite ()*	None	NaH(CO₃)	172.8	153.6	1	86960	78
Nepheline ()*	Tridymite	Na₃K(Al₄Si₄O₁₆)	172.8	153.6	1	86960	884
Phlogopite ()*	Mica Clay	KMg₃(AlSi₃O₁₀)(OH)₂	172.8	153.6	1	86960	2273
Pyrite ()*	Pyrite	FeS₂	201	145	3	86959,86960,86961	39462
Quartz ()*	Quartz	SiO₂	201	145	3	86959,86960,86961	61156
Rouvilleite ()*	None	Na₃Ca₂(CO₃)₃F	172.8	153.6	1	86960	3
Sphalerite ()*	Sphalerite	ZnS	172.8	153.6	1	86960	21482
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	2	86959,86960	4899
Vermiculite ()*	Clay Smectite-vermiculite	Mg_0.7(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄·8H₂O			1	86961	652
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

All locality data graciously provided by mindat.org

All age data...