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:
Seneca Mine, Mohawk, Keweenaw Co., Michigan, USA

Oldest recorded age at locality: 1060
Youngest recorded age at locality: 1047

mindat Locality ID: 299057
mindat URL: http://www.mindat.org/loc-299057.html

Tectonic Settings:

Total number of sublocalities beneath "Seneca Mine, Mohawk, Keweenaw Co., Michigan, USA": 4
Total number of bottom-level sublocalities: 4

Number of Child Localities: 4
Child Localities:
Old Seneca Mine (Seneca No. 4 Shaft)
Seneca No. 1 Shaft
Seneca No. 2 Shaft (Gratiot Mine)
Seneca No. 3 Shaft

Latitude: 47°19'1"N
Longitude: 88°20'45"W
Decimal Degree (lat, lon): 47.316944444444,-88.345833333333

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.

Analcime	Baryte	Calcite	Clinozoisite	Copper	Domeykite	Epidote	Feldspar	Gadolinite	Natrolite
None	Not in a structural group	Perovskite	Prehnite	Pumpellyite	Quartz	Skutterudite

Algodonite ()*	Analcime ()*	Baryte ()*	Calcite ()*	Chalcocite ()*
Copper ()*	Datolite ()*	Domeykite ()*	Epidote ()*	Microcline ()*
Natrolite ()*	Nickelskutterudite ()*	Prehnite ()*	Pumpellyite-(Mg) ()*	Quartz ()*
Silver ()*

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 B Ba C Ca Co Cu Fe H K Mg Na Ni O S Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Analcime Baryte Calcite Clinozoisite Copper Domeykite Epidote Feldspar Gadolinite Natrolite
None Not in a structural group Perovskite Prehnite Pumpellyite Quartz Skutterudite

16 IMA Minerals at location:

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
Algodonite ()*	Not in a structural group	Cu_1-xAs_x (x ≈ 0.15)	1060	1047	2	221941,221942	41
Analcime ()*	Analcime	Na(AlSi₂O₆)·H₂O	1060	1047	3	221941,221942,221943	1627
Baryte ()*	Baryte	Ba(SO₄)	1060	1047	2	221941,221942	11547
Calcite ()*	Calcite	Ca(CO₃)	1060	1047	3	221940,221941,221942	27770
Chalcocite ()*	None	Cu₂S	1060	1047	1	221942	5707
Copper ()*	Copper	Cu	1060	1047	4	221940,221941,221942,221943	3846
Datolite ()*	Gadolinite	CaB(SiO₄)(OH)	1060	1047	2	221941,221942	498
Domeykite ()*	Domeykite	Cu₃As	1060	1047	1	221941	73
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	1060	1047	2	221941,221942	8173
Microcline ()*	Feldspar	K(AlSi₃O₈)	1060	1047	1	221941	4924
Natrolite ()*	Natrolite	Na₂(Si₃Al₂)O₁₀·2H₂O	1060	1047	2	221941,221942	1236
Nickelskutterudite ()*	Skutterudite Perovskite	(Ni,Co,Fe)As₃	1060	1047	1	221941	176
Prehnite ()*	Prehnite	Ca₂Al(Si₃Al)O₁₀(OH)₂	1060	1047	3	221940,221941,221942	1898
Pumpellyite-(Mg) ()*	Pumpellyite	Ca₂MgAl₂(Si₂O₇)(SiO₄)(OH)₂·H₂O	1060	1047	1	221941	106
Quartz ()*	Quartz	SiO₂	1060	1047	3	221940,221941,221942	61156
Silver ()*	Copper	Ag	1060	1047	1	221941	5186

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
	Mo-00057	1060	1047		Rb-Sr						Yes		Kamiokite	Mo	3847	Keweenaw Co., Michigan, USA		Bornhorst et al. (1988)	10.2113/gsecongeo.83.3.619	EG83_619

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...