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:
Marinkas Quellen (Marinkas Kwela), Karasburg West, Karas Region, Namibia

Oldest recorded age at locality: 541
Youngest recorded age at locality: 488

mindat Locality ID: 158051
mindat URL: http://www.mindat.org/loc-158051.html

Tectonic Settings:

Total number of sublocalities beneath "Marinkas Quellen (Marinkas Kwela), Karasburg West, Karas Region, Namibia": 0
Total number of bottom-level sublocalities: 0

Latitude: 28°10'"S
Longitude: 17°25'0"E
Decimal Degree (lat, lon): -28.166666666667,17.416666666667

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	Fluorite	Monazite	None	Pyroxene

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: C Ca Ce F Fe H Mg Na O P Si Y

Elements from minerals reported directly at this locality: C Ca Ce F Fe H Mg Na O P Si Y

Structural Groups for minerals in this locality:
Amphibole Fluorite Monazite None Pyroxene

5 IMA Minerals at location:

Aegirine-augite ()*	Arfvedsonite ()*	Fluorite ()*	Monazite-(Ce) ()*	Synchysite-(Y) ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Aegirine-augite ()*	Pyroxene	(Ca,Na)(Fe³⁺,Mg,Fe²⁺)Si₂O₆	541	488	286
Arfvedsonite ()*	Amphibole	NaNa₂(Fe²⁺₄Fe³⁺)Si₈O₂₂(OH)₂	541	488	295
Fluorite ()*	Fluorite	CaF₂	541	488	9617
Monazite-(Ce) ()*	Monazite	Ce(PO₄)	541	488	945
Synchysite-(Y) ()*	None	CaY(CO₃)₂F	541	488	55

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Jen_0000889	MAGMATIC STYLE: 1.5x1 km intrusive complex north of Marinkas Kwela complex with carbonatite dykes, one of which is about 2 km long. ASSOCIATED SILICATE ROCKS: Calcite-bearing nepheline syenite.

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_0000889	540	488	514±26	Rb-Sr			whole rock							158051	Marinkas Quellen (Marinkas Kwela), Karasburg West, Karas Region, Namibia	Grootpenseiland	Woolley and Kjarsgaard (2008)	10.4095/225115	GSCOF5796
	ree-00480	541	495	Cambrian											158051	Marinkas Quellen (Marinkas Kwela), Karasburg West, Karas Region, Namibia	Marinkas Quellen (Marinkas Kwela)	Orris and Grauch (2002)		USGSOFR02_189

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...