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:
Okongava Ost Farm 72, Karibib, Erongo Region, Namibia

Oldest recorded age at locality: 551
Youngest recorded age at locality: 479

mindat Locality ID: 191565
mindat URL: http://www.mindat.org/loc-191565.html

Tectonic Settings:

Total number of sublocalities beneath "Okongava Ost Farm 72, Karibib, Erongo Region, Namibia": 7
Total number of bottom-level sublocalities: 7

Number of Child Localities: 7
Child Localities:
Helikon I Pegmatite
Helikon II Pegmatite
Henckert's Pegmatite
Jooste's Pegmatite
Rubikon 3 Pegmatite
Rubikon II Pegmatite
Rubikon Mine (Rubicon Mine)

Latitude: 22°5'3"S
Longitude: 16°0'43"E
Decimal Degree (lat, lon): -22.084166666667,16.011944444444

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.

Alluaudite	Alunite	Amphibole	Analcime	Apatite	Arrojadite	Arsenic	Arseniosiderite	Beryl	Bismutite
Calcite	Childrenite	Chlorite	Clay	Columbite	Descloizite	Feldspar	Fluorite	Garnet	Graftonite
Hureaulite	Löllingite	Matlockite	Meneghinite	Mica	None	Not in a structural group	Olivine	Phosphosiderite	Quartz
Rockbridgeite	Rutile	Scheelite	Smectite-vermiculite	Stibnite	Topaz	Tourmaline	Triplite	Turquoise	Wagnerite
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 Be Bi C Ca Cl Cs Cu F Fe H K Li Mg Mn Na Nb O P Pb S Si Ti V Zr

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Alluaudite Alunite Amphibole Analcime Apatite Arrojadite Arsenic Arseniosiderite Beryl Bismutite
Calcite Childrenite Chlorite Clay Columbite Descloizite Feldspar Fluorite Garnet Graftonite
Hureaulite Löllingite Matlockite Meneghinite Mica None Not in a structural group Olivine Phosphosiderite Quartz
Rockbridgeite Rutile Scheelite Smectite-vermiculite Stibnite Topaz Tourmaline Triplite Turquoise Wagnerite
Zircon

58 IMA Minerals at location:

Actinolite ()*	Albite ()*	Alluaudite ()*	Amblygonite ()*	Bertrandite ()*
Beryl ()*	Bismite ()*	Bismoclite ()*	Bismuth ()*	Bismuthinite ()*
Bismutite ()*	Calcite ()*	Clinobisvanite ()*	Clinochlore ()*	Columbite-(Fe) ()*
Columbite-(Mn) ()*	Cookeite ()*	Dickinsonite-(KMnNa) ()*	Elbaite ()*	Eosphorite ()*
Ferrisicklerite ()*	Fluorapatite ()*	Fluorite ()*	Frondelite ()*	Graftonite ()*
Hectorite ()*	Heterosite ()*	Hureaulite ()*	Joosteite ()*	Lindströmite ()*
Lithiophilite ()*	Löllingite ()*	Microcline ()*	Mimetite ()*	Montmorillonite ()*
Mottramite ()*	Muscovite ()*	Petalite ()*	Phosphosiderite ()*	Pollucite ()*
Pseudomalachite ()*	Pucherite ()*	Purpurite ()*	Pyromorphite ()*	Quartz ()*
Robertsite ()*	Rutile ()*	Schorl ()*	Sicklerite ()*	Spessartine ()*
Tavorite ()*	Topaz ()*	Triphylite ()*	Triplite ()*	Turquoise ()*
Varulite ()*	Waylandite ()*	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	511.7	487.7	1	86557	3419
Albite ()*	Feldspar	Na(AlSi₃O₈)	551	479	2	86557,86562	8803
Alluaudite ()*	Alluaudite	NaMnFe³⁺₂(PO₄)₃	511.7	487.7	1	86558	94
Amblygonite ()*	None	LiAl(PO₄)F	551	479	3	86556,86557,86562	244
Bertrandite ()*	Not in a structural group	Be₄Si₂O₇(OH)₂	551	479	1	86562	606
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈	551	479	3	86556,86557,86562	4286
Bismite ()*	None	Bi₂O₃	551	479	1	86562	214
Bismoclite ()*	Matlockite	BiOCl	551	479	1	86562	71
Bismuth ()*	Arsenic	Bi	551	479	2	86557,86562	1966
Bismuthinite ()*	Stibnite	Bi₂S₃	551	479	1	86562	1935
Bismutite ()*	Bismutite	Bi₂O₂(CO₃)	551	479	1	86562	716
Calcite ()*	Calcite	Ca(CO₃)	511.7	487.7	1	86557	27770
Clinobisvanite ()*	None	Bi(VO₄)	551	479	1	86562	36
Clinochlore ()*	Chlorite Clay	Mg₅Al(AlSi₃O₁₀)(OH)₈	551	479	1	86562	1756
Columbite-(Fe) ()*	Columbite	Fe²⁺Nb₂O₆	511.7	487.7	1	86562	518
Columbite-(Mn) ()*	Columbite	Mn²⁺Nb₂O₆	511.7	487.7	2	86557,86562	289
Cookeite ()*	Chlorite Clay	(Al,Li)₃Al₂(Si,Al)₄O₁₀(OH)₈	551	479	1	86562	181
Dickinsonite-(KMnNa) ()*	Arrojadite	K(NaMn)CaNa₃AlMn₁₃(PO₄)₁₂(OH)₂	511.7	487.7	1	86557	26
Elbaite ()*	Tourmaline	Na(Al_1.5Li_1.5)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	551	479	3	86556,86557,86562	520
Eosphorite ()*	Childrenite	Mn²⁺Al(PO₄)(OH)₂·H₂O	511.7	487.7	1	86557	128
Ferrisicklerite ()*	Olivine	Li_1-x(Fe³⁺,Mn²⁺)(PO₄)	511.7	487.7	1	86561	108
Fluorapatite ()*	Apatite	Ca₅(PO₄)₃F	551	479	1	86562	2740
Fluorite ()*	Fluorite	CaF₂	551	479	1	86562	9617
Frondelite ()*	Rockbridgeite	(Mn²⁺_0.5Fe³⁺_0.5)₂Fe³⁺₃(PO₄)₃(OH)₅	551	479	1	86562	52
Graftonite ()*	Graftonite	Fe²⁺Fe²⁺₂(PO₄)₂	511.7	487.7	1	86558	107
Hectorite ()*	Clay	Na_0.3(Mg,Li)₃Si₄O₁₀(F,OH)₂·nH₂O	551	479	2	86557,86562	19
Heterosite ()*	Olivine	Fe³⁺(PO₄)	511.7	487.7	2	86558,86561	204
Hureaulite ()*	Hureaulite	Mn²⁺₅(PO₃OH)₂(PO₄)₂·4H₂O	551	479	3	86557,86561,86562	125
Joosteite ()*	Wagnerite	Mn²⁺Mn³⁺O(PO₄)	511.7	487.7	1	86557	1
Lindströmite ()*	Meneghinite	Pb₃Cu₃Bi₇S₁₅	551	479	1	86562	38
Lithiophilite ()*	Olivine	LiMn²⁺(PO₄)	551	479	3	86557,86560,86562	155
Löllingite ()*	Löllingite	FeAs₂	551	479	1	86562	762
Microcline ()*	Feldspar	K(AlSi₃O₈)	551	479	1	86562	4924
Mimetite ()*	Apatite	Pb₅(AsO₄)₃Cl	551	479	1	86562	1107
Montmorillonite ()*	Clay Smectite-vermiculite	(Na,Ca)_0.3(Al,Mg)₂Si₄O₁₀(OH)₂·nH₂O	551	479	1	86562	1508
Mottramite ()*	Descloizite	PbCu(VO₄)(OH)	551	479	1	86562	362
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	551	479	2	86557,86562	17380
Petalite ()*	Not in a structural group	LiAlSi₄O₁₀	551	479	3	86556,86557,86562	124
Phosphosiderite ()*	Phosphosiderite	Fe³⁺(PO₄)·2H₂O	551	479	1	86562	182
Pollucite ()*	Analcime	Cs(Si₂Al)O₆·nH₂O	551	479	4	86556,86557,86559,86562	140
Pseudomalachite ()*	None	Cu₅(PO₄)₂(OH)₄	551	479	1	86562	369
Pucherite ()*	Scheelite	Bi(VO₄)	551	479	1	86562	53
Purpurite ()*	Olivine	Mn³⁺(PO₄)	511.7	487.7	1	86560	80
Pyromorphite ()*	Apatite	Pb₅(PO₄)₃Cl	551	479	1	86562	1725
Quartz ()*	Quartz	SiO₂	551	479	4	86556,86557,86560,86562	61156
Robertsite ()*	Arseniosiderite	Ca₂Mn³⁺₃O₂(PO₄)₃·3H₂O	551	479	1	86562	36
Rutile ()*	Rutile	TiO₂	551	479	1	86562	5614
Schorl ()*	Tourmaline	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	551	479	1	86562	2705
Sicklerite ()*	Olivine	LiMn²⁺(PO₄)	551	479	4	86557,86558,86560,86562	66
Spessartine ()*	Garnet	Mn²⁺₃Al₂(SiO₄)₃	551	479	1	86562	1214
Tavorite ()*	None	LiFe³⁺(PO₄)(OH)	551	479	1	86562	35
Topaz ()*	Topaz	Al₂SiO₄F₂	551	479	1	86562	1476
Triphylite ()*	Olivine	LiFe²⁺(PO₄)	511.7	487.7	1	86558	313
Triplite ()*	Triplite	Mn²⁺₂(PO₄)F	511.7	487.7	2	86558,86560	233
Turquoise ()*	Turquoise	CuAl₆(PO₄)₄(OH)₈·4H₂O	551	479	1	86562	484
Varulite ()*	Alluaudite	Na₂Mn(MnFe³⁺)(PO₄)₃	511.7	487.7	1	86557	15
Waylandite ()*	Alunite	BiAl₃(PO₄)₂(OH)₆	551	479	1	86562	31
Zircon ()*	Zircon	Zr(SiO₄)	551	479	1	86562	5251

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Scott-CGSN8_5-0005	mine

5 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Sample Source	Sample Num	Dated Mineral	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
Alexandra-0160	551	479	515 ± 36	Rb-Sr	Age of intrusion	amblygonite, k-feldspar, muscovite	L180,L183,L186,L189			19876	Rubikon Mine (Rubicon Mine), Okongava Ost Farm 72, Karibib, Erongo Region, Namibia	Rubicon mine	Haack and Gohn (1988)		CGSSWAN4_15
Alexandra-0264	508.1	502.9	505.5±2.6	U-Pb	Age of Nb-Ta mineralization	columbite-(mn)	4	Columbite-(Mn)	Ta, Nb	19876	Rubikon Mine (Rubicon Mine), Okongava Ost Farm 72, Karibib, Erongo Region, Namibia	Rubikon	Melcher et al. (2015)	10.1016/j.oregeorev.2013.09.003	OGR64_667
Alexandra-0265	508.3	503.7	506±2.3	U-Pb	Age of Nb-Ta mineralization	columbite-(mn)	4	Columbite-(Mn)	Ta, Nb	19876	Rubikon Mine (Rubicon Mine), Okongava Ost Farm 72, Karibib, Erongo Region, Namibia	Rubikon	Melcher et al. (2015)	10.1016/j.oregeorev.2013.09.003	OGR64_667
Alexandra-0266	511.7	487.7	499.7±12	U-Pb	Age of Nb-Ta mineralization	columbite-(mn)	4	Columbite-(Mn)	Ta, Nb	19876	Rubikon Mine (Rubicon Mine), Okongava Ost Farm 72, Karibib, Erongo Region, Namibia	Rubikon	Melcher et al. (2015)	10.1016/j.oregeorev.2013.09.003	OGR64_667
Scott-CGSN8_5-0005	551	479	515±36	Rb-Sr	Age of intrusion	amblygonite, k-feldspar, muscovite				19876	Rubikon Mine (Rubicon Mine), Okongava Ost Farm 72, Karibib, Erongo Region, Namibia	Rubicon mine	Steven et al. (1993)		CGSN8_5	P. 10 Table 3

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...