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:
Ahmeek, Keweenaw Co., Michigan, USA

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

mindat Locality ID: 24712
mindat URL: http://www.mindat.org/loc-24712.html

Tectonic Settings:

Total number of sublocalities beneath "Ahmeek, Keweenaw Co., Michigan, USA": 10
Total number of bottom-level sublocalities: 9

Number of Child Localities: 5
Child Localities:
Ahmeek Mine
Five Mile Point
Fulton Fissure
Houghton No. 2
Sevenmile Point

Latitude: 47°22'5"N
Longitude: 88°18'37"W
Decimal Degree (lat, lon): 47.368055555556,-88.310277777778

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	Anthonyite	Calcite	Chalcopyrite	Clay	Clinozoisite	Copper	Domeykite	Epidote	Feldspar
Fluorite	Gadolinite	Garnet	Humboldtine	Mica	Nolanite	None	Not in a structural group	Oxalate	Prehnite
Quartz	Smectite-vermiculite	Veszelyite

Albite ()*	Algodonite ()*	Analcime ()*	Andradite ()*	Ankerite ()*
Calcite ()*	Calumetite ()*	Chalcopyrite ()*	Copper ()*	Cuprite ()*
Datolite ()*	Domeykite ()*	Epidote ()*	Fluorite ()*	Humboldtine ()*
Kamiokite ()*	Laumontite ()*	Microcline ()*	Moolooite ()*	Muscovite ()*
Prehnite ()*	Quartz ()*	Saponite ()*	Silver ()*	Veszelyite ()*
Whewellite ()*

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 C Ca Cu F Fe H K Mg Mo Na O P S Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Analcime Anthonyite Calcite Chalcopyrite Clay Clinozoisite Copper Domeykite Epidote Feldspar
Fluorite Gadolinite Garnet Humboldtine Mica Nolanite None Not in a structural group Oxalate Prehnite
Quartz Smectite-vermiculite Veszelyite

26 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
Albite ()*	Feldspar	Na(AlSi₃O₈)	1060	1047	3	221762,221764,221767	8803
Algodonite ()*	Not in a structural group	Cu_1-xAs_x (x ≈ 0.15)	1060	1047	4	221758,221759,221760,221761	41
Analcime ()*	Analcime	Na(AlSi₂O₆)·H₂O	1060	1047	3	221760,221761,221764	1627
Andradite ()*	Garnet	Ca₃Fe³⁺₂(SiO₄)₃	1060	1047	1	221758	1534
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	1060	1047	1	221762	3092
Calcite ()*	Calcite	Ca(CO₃)	1060	1047	3	221758,221762,221764	27770
Calumetite ()*	Anthonyite	CaCu₄(OH)₈Cl₂·3.5H₂O	1060	1047	1	221759	11
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	1060	1047	1	221758	27198
Copper ()*	Copper	Cu	1060	1047	8	221758,221759,221760,221761,221763,221764,221765,221767	3846
Cuprite ()*	Not in a structural group	Cu₂O	1060	1047	1	221758	2970
Datolite ()*	Gadolinite	CaB(SiO₄)(OH)	1060	1047	1	221758	498
Domeykite ()*	Domeykite	Cu₃As	1060	1047	6	221758,221759,221760,221761,221762,221765	73
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	1060	1047	2	221758,221763	8173
Fluorite ()*	Fluorite	CaF₂	1060	1047	1	221764	9617
Humboldtine ()*	Humboldtine Oxalate	Fe²⁺(C₂O₄)·2H₂O	1060	1047	1	221758	27
Kamiokite ()*	Nolanite	Fe²⁺₂Mo⁴⁺₃O₈	1060	1047	1	221758	8
Laumontite ()*	Not in a structural group	CaAl₂Si₄O₁₂·4H₂O	1060	1047	3	221762,221763,221767	1271
Microcline ()*	Feldspar	K(AlSi₃O₈)	1060	1047	1	221758	4924
Moolooite ()*	Oxalate	Cu(C₂O₄)·nH₂O	1060	1047	1	221758	11
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	1060	1047	2	221762,221763	17380
Prehnite ()*	Prehnite	Ca₂Al(Si₃Al)O₁₀(OH)₂	1060	1047	5	221758,221762,221763,221764,221767	1898
Quartz ()*	Quartz	SiO₂	1060	1047	7	221758,221760,221761,221762,221763,221764,221767	61156
Saponite ()*	Clay Smectite-vermiculite	(Ca,Na)_0.3(Mg,Fe)₃(Si,Al)₄O₁₀(OH)₂·4H₂O	1060	1047	1	221758	301
Silver ()*	Copper	Ag	1060	1047	1	221758	5186
Veszelyite ()*	Veszelyite	(Cu,Zn)₂Zn(PO₄)(OH)₃·2H₂O	1060	1047	1	221758	20
Whewellite ()*	Oxalate	Ca(C₂O₄)·H₂O	1060	1047	1	221758	66

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...