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:
Copper Harbor, Keweenaw Co., Michigan, USA

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

mindat Locality ID: 24427
mindat URL: http://www.mindat.org/loc-24427.html

Tectonic Settings:

Total number of sublocalities beneath "Copper Harbor, Keweenaw Co., Michigan, USA": 24
Total number of bottom-level sublocalities: 23

Number of Child Localities: 21
Child Localities:
Brockway Mountain (West Bluff)
Clark Mine
Copper Harbor Conglomerate
Dan's Point
Dan's Point (2)
Devil's Wash Tub
Hanover Mine
Hays Mine (Pittsburgh & Boston)
Hays Point
Horseshoe Harbor
Horseshoe Harbor (2)
Horseshoe Harbor (3)
La Roche Verte
Lake Manganese
Light House Point
M-26 Roadcut
Manganese Creek
Manganese Mine
Mosquito District
Porters Island
Star Mine

Latitude: 47°27'25"N
Longitude: 87°53'13"W
Decimal Degree (lat, lon): 47.456944444444,-87.886944444444

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.

Adelite	Allophane	Analcime	Apophyllite	Baryte	Braunite	Brochantite	Calcite	Chlorite	Clay
Clinozoisite	Copper	Coronadite	Corundum	Domeykite	Epidote	Feldspar	Fluorite	Gadolinite	Malachite
Mica	Natrolite	None	Not in a structural group	Prehnite	Pumpellyite	Quartz	Rhodonite	Rutile	Thomsonite
Volborthite	Zircon

Analcime ()*	Ankerite ()*	Anorthite ()*	Babingtonite ()*	Baryte ()*
Bornite ()*	Braunite ()*	Brochantite ()*	Calcite ()*	Chalcocite ()*
Chrysocolla ()*	Clinochlore ()*	Copper ()*	Cuprite ()*	Datolite ()*
Dolomite ()*	Domeykite ()*	Epidote ()*	Fluorapophyllite-(K) ()*	Fluorite ()*
Hematite ()*	Hollandite ()*	Langite ()*	Laumontite ()*	Macfallite ()*
Malachite ()*	Manganite ()*	Microcline ()*	Muscovite ()*	Natrolite ()*
Neltnerite ()*	Orientite ()*	Posnjakite ()*	Prehnite ()*	Pumpellyite-(Fe²⁺) ()*
Pumpellyite-(Mg) ()*	Pumpellyite-(Mn²⁺) ()*	Pyrolusite ()*	Quartz ()*	Ranciéite ()*
Silver ()*	Tangeite ()*	Tenorite ()*	Thomsonite-Ca ()*	Volborthite ()*
Zircon ()*

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 Cu F Fe H K Mg Mn Na O S Si V Zr

Elements from minerals reported directly at this locality: Al C Ca Fe Mg O Si

Structural Groups for minerals in this locality:
Adelite Allophane Analcime Apophyllite Baryte Braunite Brochantite Calcite Chlorite Clay
Clinozoisite Copper Coronadite Corundum Domeykite Epidote Feldspar Fluorite Gadolinite Malachite
Mica Natrolite None Not in a structural group Prehnite Pumpellyite Quartz Rhodonite Rutile Thomsonite
Volborthite Zircon

46 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
Analcime ()*	Analcime	Na(AlSi₂O₆)·H₂O	1060	1047	2	221810,221826	1627
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	1060	1047	0		3092
Anorthite ()*	Feldspar	Ca(Al₂Si₂O₈)	1060	1047	0		1036
Babingtonite ()*	Rhodonite	Ca₂Fe²⁺Fe³⁺Si₅O₁₄(OH)	1060	1047	1	221810	161
Baryte ()*	Baryte	Ba(SO₄)	1060	1047	4	221812,221818,221819,221826	11547
Bornite ()*	None	Cu₅FeS₄	1060	1047	1	221811	5516
Braunite ()*	Braunite	Mn²⁺Mn³⁺₆O₈(SiO₄)	1060	1047	2	221825,221826	483
Brochantite ()*	Brochantite	Cu₄(SO₄)(OH)₆	1060	1047	1	221810	1633
Calcite ()*	Calcite	Ca(CO₃)	1060	1047	12	221810,221811,221812,221813,221816,221817,221818,221819,221821,221826,221828,221830	27770
Chalcocite ()*	None	Cu₂S	1060	1047	5	221810,221811,221812,221818,221819	5707
Chrysocolla ()*	Allophane	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O	1060	1047	3	221817,221821,221826	3531
Clinochlore ()*	Chlorite Clay	Mg₅Al(AlSi₃O₁₀)(OH)₈	1060	1047	1	221810	1756
Copper ()*	Copper	Cu	1060	1047	13	221810,221811,221812,221814,221815,221816,221818,221819,221826,221828,221829,221830,221832	3846
Cuprite ()*	Not in a structural group	Cu₂O	1060	1047	5	221810,221811,221814,221816,221826	2970
Datolite ()*	Gadolinite	CaB(SiO₄)(OH)	1060	1047	5	221810,221826,221828,221830,221832	498
Dolomite ()*	None	CaMg(CO₃)₂	1060	1047	1	221810	9895
Domeykite ()*	Domeykite	Cu₃As	1060	1047	1	221811	73
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	1060	1047	2	221810,221826	8173
Fluorapophyllite-(K) ()*	Apophyllite	KCa₄Si₈O₂₀F·8H₂O	1060	1047	1	221810	303
Fluorite ()*	Fluorite	CaF₂	1060	1047	4	221812,221818,221819,221823	9617
Hematite ()*	Corundum	Fe₂O₃	1060	1047	1	221826	14640
Hollandite ()*	Coronadite	Ba(Mn⁴⁺₆Mn³⁺₂)O₁₆	1060	1047	1	221826	243
Langite ()*	None	Cu₄(SO₄)(OH)₆·2H₂O	1060	1047	1	221810	593
Laumontite ()*	Not in a structural group	CaAl₂Si₄O₁₂·4H₂O	1060	1047	6	221810,221812,221818,221819,221823,221826	1271
Macfallite ()*	None	Ca₂Mn³⁺₃(SiO₄)(Si₂O₇)(OH)₃	1060	1047	1	221826	6
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	1060	1047	4	221810,221821,221826,221830	12537
Manganite ()*	Rutile	Mn³⁺O(OH)	1060	1047	1	221826	770
Microcline ()*	Feldspar	K(AlSi₃O₈)	1060	1047	1	221810	4924
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	1060	1047	1	221813	17380
Natrolite ()*	Natrolite	Na₂(Si₃Al₂)O₁₀·2H₂O	1060	1047	2	221810,221831	1236
Neltnerite ()*	Braunite	CaMn³⁺₆O₈(SiO₄)	1060	1047	2	221825,221826	8
Orientite ()*	None	Ca₈Mn³⁺₁₀(SiO₄)₃(Si₃O₁₀)₃(OH)₁₀·4H₂O	1060	1047	1	221826	8
Posnjakite ()*	None	Cu₄(SO₄)(OH)₆·H₂O	1060	1047	1	221810	309
Prehnite ()*	Prehnite	Ca₂Al(Si₃Al)O₁₀(OH)₂	1060	1047	5	221810,221826,221828,221829,221832	1898
Pumpellyite-(Fe²⁺) ()*	Pumpellyite	Ca₂Fe²⁺Al₂(Si₂O₇)(SiO₄)(OH,O)₂·H₂O	1060	1047	1	221810	30
Pumpellyite-(Mg) ()*	Pumpellyite	Ca₂MgAl₂(Si₂O₇)(SiO₄)(OH)₂·H₂O	1060	1047	1	221830	106
Pumpellyite-(Mn²⁺) ()*	Pumpellyite	Ca₂Mn²⁺Al₂(Si₂O₇)(SiO₄)(OH)₂·H₂O	1060	1047	1	221826	15
Pyrolusite ()*	Rutile	MnO₂	1060	1047	2	221810,221826	3106
Quartz ()*	Quartz	SiO₂	1060	1047	8	221809,221810,221820,221822,221828,221829,221830,221831	61156
Ranciéite ()*	None	(Ca,Mn²⁺)_0.2(Mn⁴⁺,Mn³⁺)O₂·0.6H₂O	1060	1047	1	221826	177
Silver ()*	Copper	Ag	1060	1047	1	221810	5186
Tangeite ()*	Adelite	CaCu(VO₄)(OH)	1060	1047	1	221826	60
Tenorite ()*	None	CuO	1060	1047	3	221810,221816,221817	1101
Thomsonite-Ca ()*	Thomsonite	NaCa₂(Al₅Si₅)O₂₀·6H₂O	1060	1047	1	221810	452
Volborthite ()*	Volborthite	Cu₃V₂O₇(OH)₂·2H₂O	1060	1047	1	221826	155
Zircon ()*	Zircon	Zr(SiO₄)	1060	1047	2	221810,221832	5251

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
R060726	Manganese Creek, Copper Harbor, Keweenaw Co., Michigan, USA	https://rruff.info/R060726

All locality data graciously provided by mindat.org

All age data...