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:
Porphyry Island Township, Thunder Bay District, Ontario, Canada

mindat Locality ID: 255414
mindat URL: http://www.mindat.org/loc-255414.html

Tectonic Settings:

Total number of sublocalities beneath "Porphyry Island Township, Thunder Bay District, Ontario, Canada": 4
Total number of bottom-level sublocalities: 2

Number of Child Localities: 2
Child Localities:
Edward Island
Porphyry Island

Latitude: 48°21'21"N
Longitude: 88°38'6"W
Decimal Degree (lat, lon): 48.355833333333,-88.635

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.

Acanthite	Arsenic	Baryte	Calcite	Chalcopyrite	Copper	None	Not in a structural group	Pyrite	Quartz
Rocksalt	Sphalerite

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: Ag Al As Ba C Ca Cu Fe H O Pb S Si Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Acanthite Arsenic Baryte Calcite Chalcopyrite Copper None Not in a structural group Pyrite Quartz
Rocksalt Sphalerite

12 IMA Minerals at location:

Acanthite ()*	Arsenic ()*	Baryte ()*	Calcite ()*	Chalcocite ()*
Chalcopyrite ()*	Galena ()*	Laumontite ()*	Pyrite ()*	Quartz ()*
Silver ()*	Sphalerite ()*

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Acanthite ()*	Acanthite	Ag₂S	2	33468,33469	2793
Arsenic ()*	Arsenic	As	1	33469	379
Baryte ()*	Baryte	Ba(SO₄)	1	33471	11547
Calcite ()*	Calcite	Ca(CO₃)	2	33469,33471	27770
Chalcocite ()*	None	Cu₂S	1	33471	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	3	33468,33469,33471	27198
Galena ()*	Rocksalt	PbS	2	33468,33469	24243
Laumontite ()*	Not in a structural group	CaAl₂Si₄O₁₂·4H₂O	2	33468,33471	1271
Pyrite ()*	Pyrite	FeS₂	1	33469	39462
Quartz ()*	Quartz	SiO₂	1	33469	61156
Silver ()*	Copper	Ag	2	33468,33469	5186
Sphalerite ()*	Sphalerite	ZnS	2	33468,33469	21482

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...