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:
Lake Mine (Great Western Mine; Bohemian), Mass City, Ontonagon Co., Michigan, USA

mindat Locality ID: 13992
mindat URL: http://www.mindat.org/loc-13992.html

Tectonic Settings:

Total number of sublocalities beneath "Lake Mine (Great Western Mine; Bohemian), Mass City, Ontonagon Co., Michigan, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 46°46'1"N
Longitude: 89°2'15"W
Decimal Degree (lat, lon): 46.766944444444,-89.0375

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.

Calcite	Clinozoisite	Copper	Epidote	Gadolinite	Gypsum	None	Pumpellyite	Quartz

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 C Ca Cu Fe H Mg O S Si

Elements from minerals reported directly at this locality: Al B C Ca Cu Fe H Mg O S Si

Structural Groups for minerals in this locality:
Calcite Clinozoisite Copper Epidote Gadolinite Gypsum None Pumpellyite Quartz

7 IMA Minerals at location:

Calcite ()*	Copper ()*	Datolite ()*	Epidote ()*	Gypsum ()*
Pumpellyite-(Mg) ()*	Quartz ()*

Mineral name	Structural Groups	IMA Formula	# of localities containing mineral
Calcite ()*	Calcite	Ca(CO₃)	27770
Copper ()*	Copper	Cu	3846
Datolite ()*	Gadolinite	CaB(SiO₄)(OH)	498
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	8173
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	6890
Pumpellyite-(Mg) ()*	Pumpellyite	Ca₂MgAl₂(Si₂O₇)(SiO₄)(OH)₂·H₂O	106
Quartz ()*	Quartz	SiO₂	61156

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...