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 Mine, Ahmeek, Keweenaw Co., Michigan, USA

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

mindat Locality ID: 8386
mindat URL: http://www.mindat.org/loc-8386.html

Tectonic Settings:

Total number of sublocalities beneath "Ahmeek Mine, Ahmeek, Keweenaw Co., Michigan, USA": 5
Total number of bottom-level sublocalities: 5

Number of Child Localities: 5
Child Localities:
Ahmeek No. 2 Shaft
Ahmeek No. 3 Shaft
Ahmeek No. 4 Shaft
Arsenide Fissure
Mass Fissure

Latitude: 47°24'33"N
Longitude: 88°3'24"W
Decimal Degree (lat, lon): 47.409166666667,-88.056666666667

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
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 ()*	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 Fe H K Mg Mo Na O P S Si

Elements from minerals reported directly at this locality: Ag Al B C Ca Cu Fe H K Mg Mo Na O P S Si Zn

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

25 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	1	221762	8803
Algodonite ()*	Not in a structural group	Cu_1-xAs_x (x ≈ 0.15)	1060	1047	3	221759,221760,221761	41
Analcime ()*	Analcime	Na(AlSi₂O₆)·H₂O	1060	1047	2	221760,221761	1627
Andradite ()*	Garnet	Ca₃Fe³⁺₂(SiO₄)₃	1060	1047	0		1534
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	1060	1047	1	221762	3092
Calcite ()*	Calcite	Ca(CO₃)	1060	1047	1	221762	27770
Calumetite ()*	Anthonyite	CaCu₄(OH)₈Cl₂·3.5H₂O	1060	1047	1	221759	11
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	1060	1047	0		27198
Copper ()*	Copper	Cu	1060	1047	4	221759,221760,221761,221763	3846
Cuprite ()*	Not in a structural group	Cu₂O	1060	1047	0		2970
Datolite ()*	Gadolinite	CaB(SiO₄)(OH)	1060	1047	0		498
Domeykite ()*	Domeykite	Cu₃As	1060	1047	4	221759,221760,221761,221762	73
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	1060	1047	1	221763	8173
Humboldtine ()*	Humboldtine Oxalate	Fe²⁺(C₂O₄)·2H₂O	1060	1047	0		27
Kamiokite ()*	Nolanite	Fe²⁺₂Mo⁴⁺₃O₈	1060	1047	0		8
Laumontite ()*	Not in a structural group	CaAl₂Si₄O₁₂·4H₂O	1060	1047	2	221762,221763	1271
Microcline ()*	Feldspar	K(AlSi₃O₈)	1060	1047	0		4924
Moolooite ()*	Oxalate	Cu(C₂O₄)·nH₂O	1060	1047	0		11
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	1060	1047	2	221762,221763	17380
Prehnite ()*	Prehnite	Ca₂Al(Si₃Al)O₁₀(OH)₂	1060	1047	2	221762,221763	1898
Quartz ()*	Quartz	SiO₂	1060	1047	4	221760,221761,221762,221763	61156
Saponite ()*	Clay Smectite-vermiculite	(Ca,Na)_0.3(Mg,Fe)₃(Si,Al)₄O₁₀(OH)₂·4H₂O	1060	1047	0		301
Silver ()*	Copper	Ag	1060	1047	0		5186
Veszelyite ()*	Veszelyite	(Cu,Zn)₂Zn(PO₄)(OH)₃·2H₂O	1060	1047	0		20
Whewellite ()*	Oxalate	Ca(C₂O₄)·H₂O	1060	1047	0		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...