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:
Ironwood, Gogebic Iron Range, Gogebic Co., Michigan, USA

Oldest recorded age at locality: 2792.82
Youngest recorded age at locality: 2512.82

mindat Locality ID: 29094
mindat URL: http://www.mindat.org/loc-29094.html

Tectonic Settings:

Total number of sublocalities beneath "Ironwood, Gogebic Iron Range, Gogebic Co., Michigan, USA": 3
Total number of bottom-level sublocalities: 3

Number of Child Localities: 3
Child Localities:
Ashland Mine
Penokee Group
Townsite Mine (Norrie Mine)

Latitude: 46°26'58"N
Longitude: 90°9'18"W
Decimal Degree (lat, lon): 46.449444444444,-90.155

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.

Aragonite	Baryte	Calcite	Coronadite	Corundum	Diaspore	Malachite	None	Rutile

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: Ba C Ca Cu Fe H K Mn O S

Elements from minerals reported directly at this locality: C Cu H O

Structural Groups for minerals in this locality:
Aragonite Baryte Calcite Coronadite Corundum Diaspore Malachite None Rutile

10 IMA Minerals at location:

Aragonite ()*	Baryte ()*	Calcite ()*	Cryptomelane ()*	Goethite ()*
Hematite ()*	Hollandite ()*	Malachite ()*	Manganite ()*	Romanèchite ()*

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
Aragonite ()*	Aragonite	Ca(CO₃)	2792.82	2512.82	1	220402	3250
Baryte ()*	Baryte	Ba(SO₄)	2792.82	2512.82	3	220401,220402,220403	11547
Calcite ()*	Calcite	Ca(CO₃)	2792.82	2512.82	2	220402,220403	27770
Cryptomelane ()*	Coronadite	K(Mn⁴⁺₇Mn³⁺)O₁₆			2	220401,220403	599
Goethite ()*	Diaspore	FeO(OH)	2792.82	2512.82	3	220401,220402,220403	7437
Hematite ()*	Corundum	Fe₂O₃	2792.82	2512.82	3	220401,220402,220403	14640
Hollandite ()*	Coronadite	Ba(Mn⁴⁺₆Mn³⁺₂)O₁₆			1	220403	243
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	2792.82	2512.82	0		12537
Manganite ()*	Rutile	Mn³⁺O(OH)	2792.82	2512.82	1	220402	770
Romanèchite ()*	None	(Ba,H₂O)₂(Mn⁴⁺,Mn³⁺)₅O₁₀			2	220401,220403	312

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
	USGS-Rb-Sr-00728	2792.82	2512.82	2652.82±140	Rb-Sr	age of intrusion		whole rock							123955	Penokee Group, Ironwood, Gogebic Iron Range, Gogebic Co., Michigan, USA		USGS-Rb-Sr		USGS-Rb-Sr

All locality data graciously provided by mindat.org

All age data...