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:
Oberholzer, Far West Rand (West Wits Line), West Rand District (West Rand), Gauteng, South Africa

Oldest recorded age at locality: 2970
Youngest recorded age at locality: 2914

mindat Locality ID: 246309
mindat URL: http://www.mindat.org/loc-246309.html

Tectonic Settings:

Total number of sublocalities beneath "Oberholzer, Far West Rand (West Wits Line), West Rand District (West Rand), Gauteng, South Africa": 4
Total number of bottom-level sublocalities: 4

Number of Child Localities: 4
Child Localities:
Apocalypse Pothole
Deep Range Chamber
Wonderfontein I Cave
Wonderfontein II Cave

Latitude: 0°0'0"N
Longitude: 0°0'0"E
Decimal Degree (lat, lon): 0,0

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	Gypsum	Leucophosphite	None	Not in a structural group	Taranakite

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 Fe H K Mg O P

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Aragonite Calcite Gypsum Leucophosphite None Not in a structural group Taranakite

10 IMA Minerals at location:

Aragonite ()*	Brushite ()*	Calcite ()*	Huntite ()*	Hydromagnesite ()*
Leucophosphite ()*	Magnesite ()*	Sasaite ()*	Strengite ()*	Taranakite ()*

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
Aragonite ()*	Aragonite	Ca(CO₃)	2970	2914	3	106216,106218,106219	3250
Brushite ()*	Gypsum	Ca(PO₃OH)·2H₂O	2970	2914	1	106216	104
Calcite ()*	Calcite	Ca(CO₃)	2970	2914	3	106216,106218,106219	27770
Huntite ()*	Not in a structural group	CaMg₃(CO₃)₄	2970	2914	1	106216	69
Hydromagnesite ()*	None	Mg₅(CO₃)₄(OH)₂·4H₂O	2970	2914	2	106218,106219	341
Leucophosphite ()*	Leucophosphite	KFe³⁺₂(PO₄)₂(OH)·2H₂O	2970	2914	2	106216,106218	110
Magnesite ()*	Calcite	Mg(CO₃)	2970	2914	1	106216	1487
Sasaite ()*	None	Al₆(PO₄)₅(OH)₃·36H₂O	2970	2914	2	106216,106217	11
Strengite ()*	None	Fe³⁺(PO₄)·2H₂O	2970	2914	2	106216,106218	263
Taranakite ()*	Taranakite	K₃Al₅(PO₃OH)₆(PO₄)₂·18H₂O	2970	2914	1	106216	57

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
	Kristen002293	2970	2914	2970-2914		sedimentation					Yes			Co, Au, Ni	29065	West Rand District (West Rand), Gauteng, South Africa	West Rand	Robb and Meyer (1995)	10.1016/0169-1368(95)00011-9	OGR10_67	association with Co, Au, and Ni from SAJG93_70

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...