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:
Sishen, Kathu, Postmasburg Manganese Field, Northern Cape, South Africa

Oldest recorded age at locality: 623.3
Youngest recorded age at locality: 616.7

mindat Locality ID: 234321
mindat URL: http://www.mindat.org/loc-234321.html

Tectonic Settings:

Total number of sublocalities beneath "Sishen, Kathu, Postmasburg Manganese Field, Northern Cape, South Africa": 4
Total number of bottom-level sublocalities: 4

Number of Child Localities: 4
Child Localities:
Borehole AKH49
Bruce Mine
Sishen Mine
Unnamed Borehole

Latitude: 27°52'34"S
Longitude: 23°1'42"E
Decimal Degree (lat, lon): -27.876111111111,23.028333333333

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	Aragonite	Baryte	Brackebuschite	Braunite	Calcite	Clay	Corundum	Diaspore	Epidote
Feldspar	Mica	Milarite	Natrolite	None	Not in a structural group	Pectolite	Pyroxene	Quartz	Rutile
Serpentine	Spinel

Aegirine ()*	Albite ()*	Ankerite ()*	Armbrusterite ()*	Arsenbrackebuschite ()*
Arsentsumebite ()*	Baryte ()*	Barytocalcite ()*	Brackebuschite ()*	Braunite ()*
Calcite ()*	Dolomite ()*	Gamagarite ()*	Goethite ()*	Greenalite ()*
Grunerite ()*	Hausmannite ()*	Hematite ()*	Kentrolite ()*	Magnetite ()*
Natrolite ()*	Noelbensonite ()*	Norrishite ()*	Paragonite ()*	Pectolite ()*
Piemontite ()*	Pyrolusite ()*	Quartz ()*	Serandite ()*	Siderite ()*
Strontianite ()*	Sugilite ()*	Tokyoite ()*	Witherite ()*

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 Ba C Ca Cu Fe H K Li Mg Mn Na O Pb S Si Sr V Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Amphibole Aragonite Baryte Brackebuschite Braunite Calcite Clay Corundum Diaspore Epidote
Feldspar Mica Milarite Natrolite None Not in a structural group Pectolite Pyroxene Quartz Rutile
Serpentine Spinel

34 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	623.3	616.7	3	107214,107215,107217	1022
Albite ()*	Feldspar	Na(AlSi₃O₈)	623.3	616.7	3	107214,107215,107217	8803
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂			1	107216	3092
Armbrusterite ()*	Not in a structural group	Na₆K₅Mn³⁺Mn²⁺₁₄(Si₉O₂₂)₄(OH)₁₀·4H₂O	623.3	616.7	2	107214,107215	3
Arsenbrackebuschite ()*	Brackebuschite	Pb₂(Fe³⁺,Zn)(AsO₄)₂(OH,H₂O)			1	107217	24
Arsentsumebite ()*	Brackebuschite	Pb₂Cu(AsO₄)(SO₄)(OH)			1	107217	37
Baryte ()*	Baryte	Ba(SO₄)			1	107217	11547
Barytocalcite ()*	None	BaCa(CO₃)₂			1	107217	83
Brackebuschite ()*	Brackebuschite	Pb₂Mn³⁺(VO₄)₂(OH)			1	107217	15
Braunite ()*	Braunite	Mn²⁺Mn³⁺₆O₈(SiO₄)	623.3	616.7	3	107214,107215,107217	483
Calcite ()*	Calcite	Ca(CO₃)			2	107216,107217	27770
Dolomite ()*	None	CaMg(CO₃)₂			2	107216,107217	9895
Gamagarite ()*	Brackebuschite	Ba₂Fe³⁺(VO₄)₂(OH)			1	107217	10
Goethite ()*	Diaspore	FeO(OH)			1	107216	7437
Greenalite ()*	Clay Serpentine	(Fe²⁺,Fe³⁺)_2-3Si₂O₅(OH)₄			1	107216	61
Grunerite ()*	Amphibole	Fe²⁺₂Fe²⁺₅Si₈O₂₂(OH)₂			1	107216	223
Hausmannite ()*	Spinel	Mn²⁺Mn³⁺₂O₄			2	107214,107217	350
Hematite ()*	Corundum	Fe₂O₃			2	107216,107217	14640
Kentrolite ()*	None	Pb₂Mn³⁺₂O₂(Si₂O₇)	623.3	616.7	2	107214,107215	22
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄			1	107216	14899
Natrolite ()*	Natrolite	Na₂(Si₃Al₂)O₁₀·2H₂O			1	107217	1236
Noelbensonite ()*	None	BaMn³⁺₂Si₂O₇(OH)₂·H₂O			1	107217	6
Norrishite ()*	Mica	KLiMn³⁺₂Si₄O₁₀O₂	623.3	616.7	1	107215	5
Paragonite ()*	Mica Clay	NaAl₂(Si₃Al)O₁₀(OH)₂			1	107217	247
Pectolite ()*	Pectolite	NaCa₂Si₃O₈(OH)			1	107217	363
Piemontite ()*	Epidote	Ca₂(Al₂Mn³⁺)[Si₂O₇][SiO₄]O(OH)			1	107217	260
Pyrolusite ()*	Rutile	MnO₂			1	107216	3106
Quartz ()*	Quartz	SiO₂	623.3	616.7	4	107214,107215,107216,107217	61156
Serandite ()*	Pectolite	NaMn²⁺₂Si₃O₈(OH)	623.3	616.7	3	107214,107215,107217	38
Siderite ()*	Calcite	Fe(CO₃)			1	107216	6417
Strontianite ()*	Aragonite	Sr(CO₃)	623.3	616.7	3	107214,107215,107217	589
Sugilite ()*	Milarite	KNa₂Fe³⁺₂(Li₃Si₁₂)O₃₀	623.3	616.7	2	107214,107215	15
Tokyoite ()*	Brackebuschite	Ba₂Mn³⁺(VO₄)₂OH			1	107217	9
Witherite ()*	Aragonite	Ba(CO₃)	623.3	616.7	3	107214,107215,107217	251

1 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
	Alexandra-0203	623.3	616.7	620 ± 3.3	Ar-Ar	Age of alkali-metasomatic processes		sugilite	WB-T1, WB-T2			Sugilite		Mn	234320	Bruce Mine, Sishen, Kathu, Postmasburg Manganese Field, Northern Cape, South Africa	Bruce mine	Moore et al. (2011)	10.1127/0935-1221/2011/0023-2117	EJM23_661

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...