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:
Allouez, Keweenaw Co., Michigan, USA

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

mindat Locality ID: 208015
mindat URL: http://www.mindat.org/loc-208015.html

Tectonic Settings:

Total number of sublocalities beneath "Allouez, Keweenaw Co., Michigan, USA": 8
Total number of bottom-level sublocalities: 7

Number of Child Localities: 5
Child Localities:
Allouez Mine
Miscellaneous Amygdaloids No. 1
Miscellaneous Amygdaloids No. 2
Miscellaneous Fissures No. 1
Miscellaneous Fissures No. 2

Latitude: 47°17'19"N
Longitude: 88°24'16"W
Decimal Degree (lat, lon): 47.288611111111,-88.404444444444

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	Apophyllite	Atacamite	Calcite	Clinozoisite	Copper	Epidote	Feldspar	Gadolinite	Garnet
Malachite	Natrolite	None	Not in a structural group	Prehnite	Quartz

Andradite ()*	Atacamite ()*	Calcite ()*	Chalcocite ()*	Chrysocolla ()*
Copper ()*	Cuprite ()*	Datolite ()*	Epidote ()*	Fluorapophyllite-(K) ()*
Malachite ()*	Microcline ()*	Natrolite ()*	Prehnite ()*	Quartz ()*
Silver ()*	Tenorite ()*

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 B C Ca Cl Cu F Fe H K Na O S Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Allophane Apophyllite Atacamite Calcite Clinozoisite Copper Epidote Feldspar Gadolinite Garnet
Malachite Natrolite None Not in a structural group Prehnite Quartz

17 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
Andradite ()*	Garnet	Ca₃Fe³⁺₂(SiO₄)₃	1060	1047	1	221770	1534
Atacamite ()*	Atacamite	Cu₂Cl(OH)₃	1060	1047	1	221770	544
Calcite ()*	Calcite	Ca(CO₃)	1060	1047	2	221770,221771	27770
Chalcocite ()*	None	Cu₂S	1060	1047	1	221770	5707
Chrysocolla ()*	Allophane	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O	1060	1047	1	221770	3531
Copper ()*	Copper	Cu	1060	1047	1	221770	3846
Cuprite ()*	Not in a structural group	Cu₂O	1060	1047	1	221770	2970
Datolite ()*	Gadolinite	CaB(SiO₄)(OH)	1060	1047	3	221770,221771,221772	498
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	1060	1047	1	221771	8173
Fluorapophyllite-(K) ()*	Apophyllite	KCa₄Si₈O₂₀F·8H₂O	1060	1047	1	221771	303
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	1060	1047	1	221770	12537
Microcline ()*	Feldspar	K(AlSi₃O₈)	1060	1047	1	221771	4924
Natrolite ()*	Natrolite	Na₂(Si₃Al₂)O₁₀·2H₂O	1060	1047	1	221770	1236
Prehnite ()*	Prehnite	Ca₂Al(Si₃Al)O₁₀(OH)₂	1060	1047	1	221773	1898
Quartz ()*	Quartz	SiO₂	1060	1047	2	221770,221771	61156
Silver ()*	Copper	Ag	1060	1047	1	221770	5186
Tenorite ()*	None	CuO	1060	1047	1	221770	1101

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...