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:
Trefoil Island, Cape Grim District, Circular Head Municipality, Tasmania, Australia

mindat Locality ID: 22599
mindat URL: http://www.mindat.org/loc-22599.html

Tectonic Settings:

Total number of sublocalities beneath "Trefoil Island, Cape Grim District, Circular Head Municipality, Tasmania, Australia": 0
Total number of bottom-level sublocalities: 0

Latitude: 40°37'56"S
Longitude: 144°41'18"E
Decimal Degree (lat, lon): -40.632222222222,144.68833333333

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.

Amorphous	Analcime	Aragonite	Calcite	Gypsum	None	Spinel

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 H Mg Na O S Si

Elements from minerals reported directly at this locality: Al C Ca H Mg Na O S Si

Structural Groups for minerals in this locality:
Amorphous Analcime Aragonite Calcite Gypsum None Spinel

6 IMA Minerals at location:

Analcime ()*	Aragonite ()*	Calcite ()*	Gypsum ()*	Opal ()*
Spinel ()*

Mineral name	Structural Groups	IMA Formula	# of localities containing mineral
Analcime ()*	Analcime	Na(AlSi₂O₆)·H₂O	1627
Aragonite ()*	Aragonite	Ca(CO₃)	3250
Calcite ()*	Calcite	Ca(CO₃)	27770
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	6890
Opal ()*	Amorphous	SiO₂·nH₂O	2994
Spinel ()*	Spinel	MgAl₂O₄	1934

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...