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:
Portobello, Otago Peninsula, Dunedin City, Otago Region, New Zealand

mindat Locality ID: 15474
mindat URL: http://www.mindat.org/loc-15474.html

Tectonic Settings:

Total number of sublocalities beneath "Portobello, Otago Peninsula, Dunedin City, Otago Region, New Zealand": 2
Total number of bottom-level sublocalities: 2

Number of Child Localities: 2
Child Localities:
Harbour Cone Mine
Pudding Island

Latitude: 45°50'53"S
Longitude: 170°38'40"E
Decimal Degree (lat, lon): -45.848055555556,170.64444444444

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	Analcime	Calcite	Clay	Copper	Feldspar	Kaolinite	Mica	None	Pyrite
Pyroxene	Tridymite

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 Au C Ca Fe H K Mg Na O S Si

Elements from minerals reported directly at this locality: C Ca O

Structural Groups for minerals in this locality:
Amphibole Analcime Calcite Clay Copper Feldspar Kaolinite Mica None Pyrite
Pyroxene Tridymite

10 IMA Minerals at location:

Aegirine ()*	Aluminoceladonite ()*	Analcime ()*	Calcite ()*	Edenite ()*
Gold ()*	Kaolinite ()*	Nepheline ()*	Pyrite ()*	Sanidine ()*

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Aegirine ()*	Pyroxene	NaFe³⁺Si₂O₆	1	87854	1022
Aluminoceladonite ()*	Mica	K(Mg,Fe²⁺)Al(Si₄O₁₀)(OH)₂	1	87854	12
Analcime ()*	Analcime	Na(AlSi₂O₆)·H₂O	1	87854	1627
Calcite ()*	Calcite	Ca(CO₃)	0		27770
Edenite ()*	Amphibole	NaCa₂Mg₅(Si₇Al)O₂₂(OH)₂	1	87854	160
Gold ()*	Copper	Au	1	87853	30554
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	1	87854	5591
Nepheline ()*	Tridymite	Na₃K(Al₄Si₄O₁₆)	1	87854	884
Pyrite ()*	Pyrite	FeS₂	1	87853	39462
Sanidine ()*	Feldspar	K(AlSi₃O₈)	1	87854	598

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...