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:
Randville, Menominee Iron Range, Dickinson Co., Michigan, USA

Oldest recorded age at locality: 1977.38
Youngest recorded age at locality: 1677.02

mindat Locality ID: 125510
mindat URL: http://www.mindat.org/loc-125510.html

Tectonic Settings:

Total number of sublocalities beneath "Randville, Menominee Iron Range, Dickinson Co., Michigan, USA": 6
Total number of bottom-level sublocalities: 5

Number of Child Localities: 5
Child Localities:
Groveland Mine
Jensen Quarry
Randville Dolomite
Tom Kings Creek
Unnamed Pegmatite Quarry ("Groveland" Pegmatite)

Latitude: 45°59'30"N
Longitude: 87°58'57"W
Decimal Degree (lat, lon): 45.991666666667,-87.9825

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.

Amphibole	Apatite	Aubertite	Beryl	Calcite	Chalcanthite	Chalcopyrite	Chlorite	Clay	Columbite
Copiapite	Corundum	Diaspore	Epsomite	Feldspar	Fluorite	Garnet	Malachite	Marcasite	Mica
Molybdenite	Monazite	None	Not in a structural group	Pyrite	Pyroxene	Quartz	Rhabdophane	Spinel	Tapiolite
Tourmaline	Zircon

Actinolite ()*	Albite ()*	Almandine ()*	Andradite ()*	Anorthite ()*
Augite ()*	Azurite ()*	Bertrandite ()*	Beryl ()*	Calcite ()*
Chalcanthite ()*	Chalcopyrite ()*	Clinochlore ()*	Columbite-(Fe) ()*	Copiapite ()*
Cummingtonite ()*	Diopside ()*	Dolomite ()*	Epsomite ()*	Fluorapatite ()*
Gahnite ()*	Goethite ()*	Grayite ()*	Grunerite ()*	Hematite ()*
Hydroxylapatite ()*	Magnetite ()*	Malachite ()*	Marcasite ()*	Microcline ()*
Molybdenite ()*	Monazite-(Ce) ()*	Muscovite ()*	Pyrite ()*	Quartz ()*
Schorl ()*	Spessartine ()*	Tantalite-(Fe) ()*	Tapiolite-(Fe) ()*	Tremolite ()*
Uraninite ()*	Wilcoxite ()*	Xenotime-(Y) ()*	Zircon ()*

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: Al B Be C Ca Ce Cu F Fe H K Mg Mn Mo Na Nb O P Pb S Si Ta Th U Y Zn Zr

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Amphibole Apatite Aubertite Beryl Calcite Chalcanthite Chalcopyrite Chlorite Clay Columbite
Copiapite Corundum Diaspore Epsomite Feldspar Fluorite Garnet Malachite Marcasite Mica
Molybdenite Monazite None Not in a structural group Pyrite Pyroxene Quartz Rhabdophane Spinel Tapiolite
Tourmaline Zircon

44 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
Actinolite ()*	Amphibole	Ca₂(Mg_4.5-2.5Fe²⁺_0.5-2.5)Si₈O₂₂(OH)₂	1977.38	1677.02	1	220287	3419
Albite ()*	Feldspar	Na(AlSi₃O₈)	1977.38	1677.02	2	220287,220292	8803
Almandine ()*	Garnet	Fe²⁺₃Al₂(SiO₄)₃	1977.38	1677.02	2	220287,220292	2353
Andradite ()*	Garnet	Ca₃Fe³⁺₂(SiO₄)₃	1977.38	1677.02	1	220287	1534
Anorthite ()*	Feldspar	Ca(Al₂Si₂O₈)	1977.38	1677.02	1	220287	1036
Augite ()*	Pyroxene	(Ca,Mg,Fe)₂Si₂O₆	1977.38	1677.02	1	220287	2060
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂			1	220289	5509
Bertrandite ()*	Not in a structural group	Be₄Si₂O₇(OH)₂			1	220292	606
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈	1977.38	1677.02	2	220287,220292	4286
Calcite ()*	Calcite	Ca(CO₃)	1977.38	1677.02	2	220287,220292	27770
Chalcanthite ()*	Chalcanthite	Cu(SO₄)·5H₂O	1977.38	1677.02	1	220287	925
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	1977.38	1677.02	2	220287,220289	27198
Clinochlore ()*	Chlorite Clay	Mg₅Al(AlSi₃O₁₀)(OH)₈			1	220288	1756
Columbite-(Fe) ()*	Columbite	Fe²⁺Nb₂O₆			1	220292	518
Copiapite ()*	Copiapite	Fe²⁺Fe³⁺₄(SO₄)₆(OH)₂·20H₂O	1977.38	1677.02	1	220287	382
Cummingtonite ()*	Amphibole	Mg₂Mg₅Si₈O₂₂(OH)₂	1977.38	1677.02	1	220287	327
Diopside ()*	Pyroxene	CaMgSi₂O₆	1977.38	1677.02	1	220287	4135
Dolomite ()*	None	CaMg(CO₃)₂	1977.38	1677.02	2	220287,220289	9895
Epsomite ()*	Epsomite	Mg(SO₄)·7H₂O	1977.38	1677.02	1	220287	484
Fluorapatite ()*	Apatite	Ca₅(PO₄)₃F			1	220292	2740
Gahnite ()*	Spinel	ZnAl₂O₄			1	220292	445
Goethite ()*	Diaspore	FeO(OH)	1977.38	1677.02	1	220287	7437
Grayite ()*	Rhabdophane	(Th,Pb,Ca)(PO₄)·H₂O			1	220292	17
Grunerite ()*	Amphibole	Fe²⁺₂Fe²⁺₅Si₈O₂₂(OH)₂	1977.38	1677.02	1	220287	223
Hematite ()*	Corundum	Fe₂O₃	1977.38	1677.02	2	220287,220292	14640
Hydroxylapatite ()*	Apatite	Ca₅(PO₄)₃OH			1	220289	367
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	1977.38	1677.02	1	220287	14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂			1	220289	12537
Marcasite ()*	Marcasite	FeS₂	1977.38	1677.02	1	220287	5674
Microcline ()*	Feldspar	K(AlSi₃O₈)			2	220291,220292	4924
Molybdenite ()*	Molybdenite	MoS₂	1977.38	1677.02	1	220287	5800
Monazite-(Ce) ()*	Monazite	Ce(PO₄)			1	220292	945
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂			1	220292	17380
Pyrite ()*	Pyrite	FeS₂	1977.38	1677.02	2	220287,220292	39462
Quartz ()*	Quartz	SiO₂	1977.38	1677.02	2	220287,220292	61156
Schorl ()*	Tourmaline	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)			1	220292	2705
Spessartine ()*	Garnet	Mn²⁺₃Al₂(SiO₄)₃			1	220292	1214
Tantalite-(Fe) ()*	Columbite	Fe²⁺Ta₂O₆	1977.38	1677.02	2	220287,220292	99
Tapiolite-(Fe) ()*	Tapiolite	Fe²⁺Ta₂O₆			1	220292	88
Tremolite ()*	Amphibole	Ca₂(Mg_5.0-4.5Fe²⁺_0.0-0.5)Si₈O₂₂(OH)₂	1977.38	1677.02	1	220287	2562
Uraninite ()*	Fluorite	UO₂	1977.38	1677.02	1	220287	2718
Wilcoxite ()*	Aubertite	MgAl(SO₄)₂F·17H₂O	1977.38	1677.02	1	220287	11
Xenotime-(Y) ()*	Zircon	Y(PO₄)			1	220292	939
Zircon ()*	Zircon	Zr(SiO₄)			1	220292	5251

2 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-00914	1977.38	1977.38	1977.38	Rb-Sr	initial age disturbed by later metamorphism		muscovite				Muscovite			11628	Groveland Mine, Randville, Menominee Iron Range, Dickinson Co., Michigan, USA		USGS-Rb-Sr		USGS-Rb-Sr
	USGS-Rb-Sr-00958	1677.02	1677.02	1677.02	Rb-Sr	initial age disturbed by later metamorphism		k-feldspar							11628	Groveland Mine, Randville, Menominee Iron Range, Dickinson Co., Michigan, USA		USGS-Rb-Sr		USGS-Rb-Sr

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...