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:
Sheldon-Columbian Mine, Houghton, Houghton Co., Michigan, USA

mindat Locality ID: 21719
mindat URL: http://www.mindat.org/loc-21719.html

Tectonic Settings:

Total number of sublocalities beneath "Sheldon-Columbian Mine, Houghton, Houghton Co., Michigan, USA": 2
Total number of bottom-level sublocalities: 2

Number of Child Localities: 2
Child Localities:
Columbian Mine (Albion Mine)
Sheldon Mine

Latitude: 47°7'0"N
Longitude: 88°33'59"W
Decimal Degree (lat, lon): 47.116666666667,-88.566388888889

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.

Andalusite	Calcite	Clinozoisite	Copper	Domeykite	Epidote	Gadolinite	Malachite	None	Not in a structural group
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: Ag Al As B C Ca Cu Fe H O Si

Elements from minerals reported directly at this locality: Ag Al As B Ca Cu Fe H O Si

Structural Groups for minerals in this locality:
Andalusite Calcite Clinozoisite Copper Domeykite Epidote Gadolinite Malachite None Not in a structural group
Quartz

11 IMA Minerals at location:

Algodonite ()*	Calcite ()*	Copper ()*	Datolite ()*	Domeykite ()*
Epidote ()*	Malachite ()*	Olivenite ()*	Quartz ()*	Silver ()*
Tenorite ()*

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Algodonite ()*	Not in a structural group	Cu_1-xAs_x (x ≈ 0.15)	0		41
Calcite ()*	Calcite	Ca(CO₃)	1	220567	27770
Copper ()*	Copper	Cu	2	220566,220567	3846
Datolite ()*	Gadolinite	CaB(SiO₄)(OH)	0		498
Domeykite ()*	Domeykite	Cu₃As	0		73
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	0		8173
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	1	220567	12537
Olivenite ()*	Andalusite	Cu₂(AsO₄)(OH)	0		492
Quartz ()*	Quartz	SiO₂	0		61156
Silver ()*	Copper	Ag	0		5186
Tenorite ()*	None	CuO	0		1101

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...