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:
Mohawk, Keweenaw Co., Michigan, USA

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

mindat Locality ID: 23709
mindat URL: http://www.mindat.org/loc-23709.html

Tectonic Settings:

Total number of sublocalities beneath "Mohawk, Keweenaw Co., Michigan, USA": 11
Total number of bottom-level sublocalities: 9

Number of Child Localities: 4
Child Localities:
Iroquois Mine
Mohawk Mine
Mohawk No. 1 Shaft
Seneca Mine

Latitude: 47°18'39"N
Longitude: 88°21'28"W
Decimal Degree (lat, lon): 47.310833333333,-88.357777777778

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.

Allophane	Analcime	Andalusite	Arsenopyrite	Atacamite	Baryte	Calcite	Clay	Clinozoisite	Copper
Corundum	Domeykite	Epidote	Feldspar	Gadolinite	Gypsum	Hureaulite	Löllingite	Malachite	Natrolite
Nickeline	Nolanite	None	Not in a structural group	Perovskite	Prehnite	Pumpellyite	Quartz	Skutterudite	Smectite-vermiculite
Tyrolite	Vivianite

Algodonite ()*	Analcime ()*	Ankerite ()*	Annabergite ()*	Azurite ()*
Baryte ()*	Calcite ()*	Chalcocite ()*	Chrysocolla ()*	Copper ()*
Cuprite ()*	Datolite ()*	Dolomite ()*	Domeykite ()*	Epidote ()*
Erythrite ()*	Guérinite ()*	Gypsum ()*	Hematite ()*	Jeankempite ()*
Kamiokite ()*	Koutekite ()*	Laumontite ()*	Lavendulan ()*	Malachite ()*
Maucherite ()*	Microcline ()*	Natrolite ()*	Nickeline ()*	Nickelskutterudite ()*
Olivenite ()*	Pararammelsbergite ()*	Paratacamite ()*	Paxite ()*	Pharmacolite ()*
Picropharmacolite ()*	Prehnite ()*	Pumpellyite-(Mg) ()*	Quartz ()*	Rammelsbergite ()*
Rauenthalite ()*	Sainfeldite ()*	Saponite ()*	Silver ()*	Skutterudite ()*
Tyrolite ()*	Vladimirite ()*

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 Cl Co Cu Fe H K Mg Mo Na Ni O S Si Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Allophane Analcime Andalusite Arsenopyrite Atacamite Baryte Calcite Clay Clinozoisite Copper
Corundum Domeykite Epidote Feldspar Gadolinite Gypsum Hureaulite Löllingite Malachite Natrolite
Nickeline Nolanite None Not in a structural group Perovskite Prehnite Pumpellyite Quartz Skutterudite Smectite-vermiculite
Tyrolite Vivianite

47 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	3	221934,221941,221942	41
Analcime ()*	Analcime	Na(AlSi₂O₆)·H₂O	1060	1047	4	221935,221941,221942,221943	1627
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	1060	1047	1	221934	3092
Annabergite ()*	Vivianite	Ni₃(AsO₄)₂·8H₂O	1060	1047	2	221934,221935	445
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂	1060	1047	1	221934	5509
Baryte ()*	Baryte	Ba(SO₄)	1060	1047	2	221941,221942	11547
Calcite ()*	Calcite	Ca(CO₃)	1060	1047	6	221933,221934,221936,221940,221941,221942	27770
Chalcocite ()*	None	Cu₂S	1060	1047	2	221934,221942	5707
Chrysocolla ()*	Allophane	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O	1060	1047	1	221934	3531
Copper ()*	Copper	Cu	1060	1047	9	221933,221934,221935,221936,221937,221940,221941,221942,221943	3846
Cuprite ()*	Not in a structural group	Cu₂O	1060	1047	1	221934	2970
Datolite ()*	Gadolinite	CaB(SiO₄)(OH)	1060	1047	4	221933,221936,221941,221942	498
Dolomite ()*	None	CaMg(CO₃)₂	1060	1047	1	221934	9895
Domeykite ()*	Domeykite	Cu₃As	1060	1047	2	221934,221941	73
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	1060	1047	4	221933,221934,221941,221942	8173
Erythrite ()*	Vivianite	Co₃(AsO₄)₂·8H₂O	1060	1047	1	221934	814
Guérinite ()*	None	Ca₅(AsO₃OH)₂(AsO₄)₂·9H₂O	1060	1047	1	221934	31
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	1060	1047	2	221933,221934	6890
Hematite ()*	Corundum	Fe₂O₃	1060	1047	1	221935	14640
Jeankempite ()*	None	Ca₅(AsO₄)₂(AsO₃OH)₂(H₂O)₇	1060	1047	1	221934	1
Kamiokite ()*	Nolanite	Fe²⁺₂Mo⁴⁺₃O₈	1060	1047	1	221934	8
Koutekite ()*	None	Cu₅As₂	1060	1047	1	221934	18
Laumontite ()*	Not in a structural group	CaAl₂Si₄O₁₂·4H₂O	1060	1047	1	221934	1271
Lavendulan ()*	None	NaCaCu₅(AsO₄)₄Cl·5H₂O	1060	1047	1	221934	149
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	1060	1047	1	221933	12537
Maucherite ()*	None	Ni₁₁As₈	1060	1047	1	221934	161
Microcline ()*	Feldspar	K(AlSi₃O₈)	1060	1047	3	221933,221934,221941	4924
Natrolite ()*	Natrolite	Na₂(Si₃Al₂)O₁₀·2H₂O	1060	1047	3	221934,221941,221942	1236
Nickeline ()*	Nickeline	NiAs	1060	1047	1	221934	633
Nickelskutterudite ()*	Skutterudite Perovskite	(Ni,Co,Fe)As₃	1060	1047	3	221934,221935,221941	176
Olivenite ()*	Andalusite	Cu₂(AsO₄)(OH)	1060	1047	1	221934	492
Pararammelsbergite ()*	Löllingite	NiAs₂	1060	1047	1	221934	52
Paratacamite ()*	Atacamite	Cu₃(Cu,Zn)Cl₂(OH)₆	1060	1047	1	221937	158
Paxite ()*	Arsenopyrite	CuAs₂	1060	1047	1	221934	3
Pharmacolite ()*	Gypsum	Ca(AsO₃OH)·2H₂O	1060	1047	1	221934	105
Picropharmacolite ()*	None	Ca₄Mg(AsO₃OH)₂(AsO₄)₂·11H₂O	1060	1047	1	221934	99
Prehnite ()*	Prehnite	Ca₂Al(Si₃Al)O₁₀(OH)₂	1060	1047	5	221933,221934,221940,221941,221942	1898
Pumpellyite-(Mg) ()*	Pumpellyite	Ca₂MgAl₂(Si₂O₇)(SiO₄)(OH)₂·H₂O	1060	1047	2	221933,221941	106
Quartz ()*	Quartz	SiO₂	1060	1047	7	221933,221934,221936,221937,221940,221941,221942	61156
Rammelsbergite ()*	Löllingite	NiAs₂	1060	1047	1	221934	233
Rauenthalite ()*	None	Ca₃(AsO₄)₂·10H₂O	1060	1047	1	221934	23
Sainfeldite ()*	Hureaulite	Ca₅(AsO₄)₂(AsO₃OH)₂·4H₂O	1060	1047	1	221934	28
Saponite ()*	Clay Smectite-vermiculite	(Ca,Na)_0.3(Mg,Fe)₃(Si,Al)₄O₁₀(OH)₂·4H₂O	1060	1047	1	221933	301
Silver ()*	Copper	Ag	1060	1047	3	221933,221934,221941	5186
Skutterudite ()*	Skutterudite Perovskite	CoAs₃	1060	1047	1	221934	531
Tyrolite ()*	Tyrolite	Ca₂Cu₉(AsO₄)₄(CO₃)(OH)₈·11H₂O	1060	1047	1	221934	245
Vladimirite ()*	None	Ca₄(AsO₄)₂(AsO₃OH)·4H₂O	1060	1047	1	221934	15

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...