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:
Dicker Willem (Dicker Wilhelm; Garubberg), Lüderitz, Karas Region, Namibia

Oldest recorded age at locality: 50.6
Youngest recorded age at locality: 46

mindat Locality ID: 56495
mindat URL: http://www.mindat.org/loc-56495.html

Tectonic Settings:

Total number of sublocalities beneath "Dicker Willem (Dicker Wilhelm; Garubberg), Lüderitz, Karas Region, Namibia": 0
Total number of bottom-level sublocalities: 0

Latitude: 26°28'"S
Longitude: 16°1'0"E
Decimal Degree (lat, lon): -26.466666666667,16.016666666667

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.

Calcite	Cancrinite	Garnet	Mica	None	Pyroxene	Spinel	Titanite	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 C Ca F Fe H K Li Mg Na O S Si Ti Zr

Elements from minerals reported directly at this locality: Al C Ca F Fe H K Li Mg Na O S Si Ti Zr

Structural Groups for minerals in this locality:
Calcite Cancrinite Garnet Mica None Pyroxene Spinel Titanite Tridymite Wollastonite
Zircon

11 IMA Minerals at location:

Aegirine ()*	Andradite ()*	Augite ()*	Calcite ()*	Cancrinite ()*
Magnetite ()*	Nepheline ()*	Tainiolite ()*	Titanite ()*	Wollastonite ()*
Zircon ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Aegirine ()*	Pyroxene	NaFe³⁺Si₂O₆	50.6	46	1022
Andradite ()*	Garnet	Ca₃Fe³⁺₂(SiO₄)₃	50.6	46	1534
Augite ()*	Pyroxene	(Ca,Mg,Fe)₂Si₂O₆	50.6	46	2060
Calcite ()*	Calcite	Ca(CO₃)	50.6	46	27770
Cancrinite ()*	Cancrinite	(Na,Ca, )₈(Al₆Si₆)O₂₄(CO₃,SO₄)₂·2H₂O	50.6	46	232
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	50.6	46	14899
Nepheline ()*	Tridymite	Na₃K(Al₄Si₄O₁₆)	50.6	46	884
Tainiolite ()*	Mica	KLiMg₂Si₄O₁₀F₂	50.6	46	40
Titanite ()*	Titanite	CaTi(SiO₄)O	50.6	46	4899
Wollastonite ()*	Wollastonite	CaSiO₃	50.6	46	1247
Zircon ()*	Zircon	Zr(SiO₄)	50.6	46	5251

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Jen_0000656	MAGMATIC STYLE: 3 km diameter circular complex of major intrusions, cone sheets, dykes and breccia pipes. ASSOCIATED SILICATE ROCKS: Ijolite xenoliths in carbonatite, trachyte dykes and fenite.
Jen_0000657	MAGMATIC STYLE: 3 km diameter circular complex of major intrusions, cone sheets, dykes and breccia pipes. ASSOCIATED SILICATE ROCKS: Ijolite xenoliths in carbonatite, trachyte dykes and fenite.
Jen_0000658	MAGMATIC STYLE: 3 km diameter circular complex of major intrusions, cone sheets, dykes and breccia pipes. ASSOCIATED SILICATE ROCKS: Ijolite xenoliths in carbonatite, trachyte dykes and fenite.

3 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_0000656	48.9	48.9	48.9	K-Ar	biotite	56495	Dicker Willem (Dicker Wilhelm; Garubberg), Lüderitz, Karas Region, Namibia	Dicker Willem	Woolley and Kjarsgaard (2008)	10.4095/225115	GSCOF5796
Jen_0000657	50	46	48±2	K-Ar	biotite	56495	Dicker Willem (Dicker Wilhelm; Garubberg), Lüderitz, Karas Region, Namibia	Dicker Willem	Woolley and Kjarsgaard (2008)	10.4095/225115	GSCOF5796
Jen_0000658	50.6	49	49.8±0.8	Rb-Sr	biotite	56495	Dicker Willem (Dicker Wilhelm; Garubberg), Lüderitz, Karas Region, Namibia	Dicker Willem	Woolley and Kjarsgaard (2008)	10.4095/225115	GSCOF5796

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...