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:
Dunka Pit (Dunka Road Deposit; North Met Deposit), Ely-Hoyt Lakes Area, St. Louis Co., Minnesota, USA

mindat Locality ID: 123423
mindat URL: http://www.mindat.org/loc-123423.html

Tectonic Settings:

Total number of sublocalities beneath "Dunka Pit (Dunka Road Deposit; North Met Deposit), Ely-Hoyt Lakes Area, St. Louis Co., Minnesota, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 47°43'15"N
Longitude: 91°49'27"W
Decimal Degree (lat, lon): 47.720833333333,-91.824166666667

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.

Chalcopyrite	Cobaltite	Cubanite	Millerite	Nickeline	None	Pentlandite	Pyrite	Pyroxene	Rocksalt
Sphalerite	Spinel	Valleriite	Wurtzite

Augite ()*	Bornite ()*	Chalcopyrite ()*	Cobaltite ()*	Cubanite ()*
Froodite ()*	Galena ()*	Mackinawite ()*	Maucherite ()*	Millerite ()*
Nickeline ()*	Gersdorffite-Pa3 ()*	Pentlandite ()*	Pyrite ()*	Pyrrhotite ()*
Sphalerite ()*	Talnakhite ()*	Valleriite ()*	Violarite ()*

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 As Bi Ca Co Cu Fe H Mg Ni O Pb Pd S Si Zn

Elements from minerals reported directly at this locality: Al As Bi Ca Co Cu Fe H Mg Ni O Pb Pd S Si Zn

Structural Groups for minerals in this locality:
Chalcopyrite Cobaltite Cubanite Millerite Nickeline None Pentlandite Pyrite Pyroxene Rocksalt
Sphalerite Spinel Valleriite Wurtzite

19 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of localities containing mineral
Augite ()*	Pyroxene	(Ca,Mg,Fe)₂Si₂O₆	2060
Bornite ()*	None	Cu₅FeS₄	5516
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	27198
Cobaltite ()*	Cobaltite	CoAsS	966
Cubanite ()*	Cubanite Wurtzite	CuFe₂S₃	802
Froodite ()*	None	PdBi₂	62
Galena ()*	Rocksalt	PbS	24243
Mackinawite ()*	None	(Fe,Ni)_1+xS (x = 0-0.07)	451
Maucherite ()*	None	Ni₁₁As₈	161
Millerite ()*	Millerite	NiS	1066
Nickeline ()*	Nickeline	NiAs	633
Gersdorffite-Pa3 ()*	Pyrite	NiAsS	767
Pentlandite ()*	Pentlandite	(Ni,Fe)₉S₈	1512
Pyrite ()*	Pyrite	FeS₂	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	9056
Sphalerite ()*	Sphalerite	ZnS	21482
Talnakhite ()*	Chalcopyrite	Cu₉Fe₈S₁₆	35
Valleriite ()*	Valleriite	2[(Fe,Cu)S]·1.53[(Mg,Al)(OH)₂]	237
Violarite ()*	Spinel	FeNi₂S₄	380

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...