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 Complex, Kalkfeld, Omatako, Otjozondjupa Region, Namibia

Oldest recorded age at locality: 172.8
Youngest recorded age at locality: 153.6

mindat Locality ID: 73245
mindat URL: http://www.mindat.org/loc-73245.html

Tectonic Settings:

Total number of sublocalities beneath "Kalkfeld Complex, Kalkfeld, Omatako, Otjozondjupa Region, Namibia": 0
Total number of bottom-level sublocalities: 0

Latitude: 20°49'10"S
Longitude: 16°7'57"E
Decimal Degree (lat, lon): -20.819444444444,16.1325

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.

Aragonite	Baryte	Burbankite	Calcite	Carbocernaite	Clay	Corundum	Eudialyte	Feldspar	Fluorite
Mica	None	Perovskite	Pyrite	Quartz	Rocksalt	Sphalerite	Spinel	Titanite	Tridymite

Albite ()*	Ankerite ()*	Baryte ()*	Burbankite ()*	Calcite ()*
Carbocernaite ()*	Chalcocite ()*	Cryolite ()*	Eudialyte ()*	Fluorite ()*
Halite ()*	Hematite ()*	Magnetite ()*	Nahcolite ()*	Nepheline ()*
Phlogopite ()*	Pyrite ()*	Quartz ()*	Rouvilleite ()*	Sphalerite ()*
Strontianite ()*	Sylvite ()*	Titanite ()*

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 S Si Sr Ti Zn Zr

Elements from minerals reported directly at this locality: Al Ba C Ca Ce Cl Cu F Fe H K La Mg Na O S Si Sr Ti Zn Zr

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

23 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Albite ()*	Feldspar	Na(AlSi₃O₈)	172.8	153.6	8803
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	172.8	153.6	3092
Baryte ()*	Baryte	Ba(SO₄)	172.8	153.6	11547
Burbankite ()*	Burbankite	(Na,Ca)₃(Sr,Ba,Ce)₃(CO₃)₅	172.8	153.6	52
Calcite ()*	Calcite	Ca(CO₃)	172.8	153.6	27770
Carbocernaite ()*	Carbocernaite	(Sr,Ce,La)(Ca,Na)(CO₃)₂	172.8	153.6	24
Chalcocite ()*	None	Cu₂S	172.8	153.6	5707
Cryolite ()*	Perovskite	Na₂NaAlF₆	172.8	153.6	50
Eudialyte ()*	Eudialyte	Na₁₅Ca₆Fe₃Zr₃Si(Si₂₅O₇₃)(O,OH,H₂O)₃(Cl,OH)₂	172.8	153.6	182
Fluorite ()*	Fluorite	CaF₂	172.8	153.6	9617
Halite ()*	Rocksalt	NaCl	172.8	153.6	1398
Hematite ()*	Corundum	Fe₂O₃	172.8	153.6	14640
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	172.8	153.6	14899
Nahcolite ()*	None	NaH(CO₃)	172.8	153.6	78
Nepheline ()*	Tridymite	Na₃K(Al₄Si₄O₁₆)	172.8	153.6	884
Phlogopite ()*	Mica Clay	KMg₃(AlSi₃O₁₀)(OH)₂	172.8	153.6	2273
Pyrite ()*	Pyrite	FeS₂	172.8	153.6	39462
Quartz ()*	Quartz	SiO₂	172.8	153.6	61156
Rouvilleite ()*	None	Na₃Ca₂(CO₃)₃F	172.8	153.6	3
Sphalerite ()*	Sphalerite	ZnS	172.8	153.6	21482
Strontianite ()*	Aragonite	Sr(CO₃)	172.8	153.6	589
Sylvite ()*	Rocksalt	KCl	172.8	153.6	275
Titanite ()*	Titanite	CaTi(SiO₄)O	172.8	153.6	4899

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.

4 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
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...