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:
Johannesburg, Johannesburg District (Central Rand), Gauteng, South Africa

Oldest recorded age at locality: 2894
Youngest recorded age at locality: 2714

mindat Locality ID: 59258
mindat URL: http://www.mindat.org/loc-59258.html

Tectonic Settings:

Total number of sublocalities beneath "Johannesburg, Johannesburg District (Central Rand), Gauteng, South Africa": 9
Total number of bottom-level sublocalities: 9

Number of Child Localities: 9
Child Localities:
Chaos Cave
City Deep Mine
Consolidated Main Reef Mine
Crown Mines Area (Crown Section Mines)
Ferriera Gold Mine
Northern Suburbs
Rand Leases Mine
Robinson Deep Gold Mine
Village Main Reef Gold Mine

Latitude: 26°12'47"S
Longitude: 28°0'19"E
Decimal Degree (lat, lon): -26.213055555556,28.005277777778

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	Calcite	Copper	Fluorite	Gypsum	None	Not in a structural group	Pyrite	Quartz	Rocksalt

Anatase ()*	Aragonite ()*	Calcite ()*	Dolomite ()*	Galena ()*
Gold ()*	Gwihabaite ()*	Gypsum ()*	Nitrocalcite ()*	Nitromagnesite ()*
Pyrite ()*	Quartz ()*	Schertelite ()*	Uraninite ()*

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: Au C Ca Fe H Mg N O P Pb S Si Ti U

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Aragonite Calcite Copper Fluorite Gypsum None Not in a structural group Pyrite Quartz Rocksalt

14 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
Anatase ()*	Not in a structural group	TiO₂	2894	2714	1	106160	2162
Aragonite ()*	Aragonite	Ca(CO₃)	2894	2714	1	106159	3250
Calcite ()*	Calcite	Ca(CO₃)	2894	2714	2	106159,106160	27770
Dolomite ()*	None	CaMg(CO₃)₂	2894	2714	1	106159	9895
Galena ()*	Rocksalt	PbS	2894	2714	1	106167	24243
Gold ()*	Copper	Au	2894	2714	6	106160,106161,106162,106165,106166,106167	30554
Gwihabaite ()*	None	(NH₄)(NO₃)	2894	2714	1	106159	10
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	2894	2714	1	106159	6890
Nitrocalcite ()*	None	Ca(NO₃)₂·4H₂O	2894	2714	1	106159	46
Nitromagnesite ()*	None	Mg(NO₃)₂·6H₂O	2894	2714	1	106159	12
Pyrite ()*	Pyrite	FeS₂	2894	2714	2	106160,106167	39462
Quartz ()*	Quartz	SiO₂	2894	2714	3	106160,106164,106167	61156
Schertelite ()*	None	(NH₄)₂Mg(PO₃OH)₂·4H₂O	2894	2714	1	106159	2
Uraninite ()*	Fluorite	UO₂	2894	2714	1	106167	2718

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
	Kristen002294	2894	2714	2894-2714		sedimentation					Yes			Co, Au, Ni	24624	Johannesburg District (Central Rand), Gauteng, South Africa	Central Rand	Robb and Meyer (1995)	10.1016/0169-1368(95)00011-9	OGR10_67	association with Co, Au, and Ni from SAJG93_71

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...