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:
Great Western Mine (Iron Star Mine), Crystal Falls, Menominee Iron Range, Iron Co., Michigan, USA

mindat Locality ID: 124362
mindat URL: http://www.mindat.org/loc-124362.html

Tectonic Settings:

Total number of sublocalities beneath "Great Western Mine (Iron Star Mine), Crystal Falls, Menominee Iron Range, Iron Co., Michigan, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 46°6'28"N
Longitude: 88°19'10"W
Decimal Degree (lat, lon): 46.107777777778,-88.319444444444

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	Calcite	Clay	Copper	Corundum	Diaspore	Gypsum	None	Pyrite	Stilpnomelane

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 C Ca Cu Fe H K Mg Mn Na O S Si

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

Structural Groups for minerals in this locality:
Allophane Calcite Clay Copper Corundum Diaspore Gypsum None Pyrite Stilpnomelane

9 IMA Minerals at location:

Copper ()*	Goethite ()*	Gypsum ()*	Hematite ()*	Neotocite ()*
Pyrite ()*	Siderite ()*	Silver ()*	Stilpnomelane ()*

Mineral name	Structural Groups	IMA Formula	# of localities containing mineral
Copper ()*	Copper	Cu	3846
Goethite ()*	Diaspore	FeO(OH)	7437
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	6890
Hematite ()*	Corundum	Fe₂O₃	14640
Neotocite ()*	Allophane	(Mn,Fe)SiO₃·H₂O (?)	186
Pyrite ()*	Pyrite	FeS₂	39462
Siderite ()*	Calcite	Fe(CO₃)	6417
Silver ()*	Copper	Ag	5186
Stilpnomelane ()*	Stilpnomelane Clay	(K,Ca,Na)(Fe,Mg,Al)₈(Si,Al)₁₂(O,OH)₃₆·nH₂O	456

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...