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:
Calumet Township, Houghton Co., Michigan, USA

mindat Locality ID: 31967
mindat URL: http://www.mindat.org/loc-31967.html

Tectonic Settings:

Total number of sublocalities beneath "Calumet Township, Houghton Co., Michigan, USA": 19
Total number of bottom-level sublocalities: 15

Number of Child Localities: 3
Child Localities:
Calumet
Tamarack
Tamarack Waterworks Beach

Latitude: 47°15'50"N
Longitude: 88°28'3"W
Decimal Degree (lat, lon): 47.263888888889,-88.4675

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	Analcime	Baryte	Calcite	Chalcopyrite	Clay	Clinozoisite	Copper	Epidote	Feldspar
Gadolinite	Malachite	Marcasite	None	Not in a structural group	Prehnite	Pyrite	Quartz	Rutile	Scheelite
Smectite-vermiculite	Sphalerite	Titanite

Algodonite ()*	Analcime ()*	Azurite ()*	Baryte ()*	Calcite ()*
Chalcocite ()*	Chalcopyrite ()*	Chrysocolla ()*	Copper ()*	Cuprite ()*
Datolite ()*	Epidote ()*	Kinoite ()*	Laumontite ()*	Malachite ()*
Manganite ()*	Marcasite ()*	Microcline ()*	Orthoclase ()*	Powellite ()*
Prehnite ()*	Pyrite ()*	Quartz ()*	Saponite ()*	Silver ()*
Sphalerite ()*	Tenorite ()*	Titanite ()*

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 Ba C Ca Cu Fe H K Mg Mn Mo Na O S Si Ti Zn

Elements from minerals reported directly at this locality: As Cu

Structural Groups for minerals in this locality:
Allophane Analcime Baryte Calcite Chalcopyrite Clay Clinozoisite Copper Epidote Feldspar
Gadolinite Malachite Marcasite None Not in a structural group Prehnite Pyrite Quartz Rutile Scheelite
Smectite-vermiculite Sphalerite Titanite

28 IMA Minerals at location:

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
Analcime ()*	Analcime	Na(AlSi₂O₆)·H₂O	2	220511,220514	1627
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂	1	220518	5509
Baryte ()*	Baryte	Ba(SO₄)	1	220510	11547
Calcite ()*	Calcite	Ca(CO₃)	9	220505,220506,220507,220514,220515,220516,220517,220518,220523	27770
Chalcocite ()*	None	Cu₂S	1	220506	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	1	220507	27198
Chrysocolla ()*	Allophane	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O	1	220518	3531
Copper ()*	Copper	Cu	9	220505,220506,220507,220511,220514,220515,220516,220517,220518	3846
Cuprite ()*	Not in a structural group	Cu₂O	2	220506,220518	2970
Datolite ()*	Gadolinite	CaB(SiO₄)(OH)	6	220506,220507,220511,220514,220518,220519	498
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	10	220505,220506,220507,220511,220512,220514,220515,220517,220518,220523	8173
Kinoite ()*	None	Ca₂Cu₂Si₃O₁₀·2H₂O	1	220505	17
Laumontite ()*	Not in a structural group	CaAl₂Si₄O₁₂·4H₂O	3	220506,220516,220517	1271
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	2	220506,220518	12537
Manganite ()*	Rutile	Mn³⁺O(OH)	1	220518	770
Marcasite ()*	Marcasite	FeS₂	1	220507	5674
Microcline ()*	Feldspar	K(AlSi₃O₈)	1	220506	4924
Orthoclase ()*	Feldspar	K(AlSi₃O₈)	1	220506	2349
Powellite ()*	Scheelite	Ca(MoO₄)	3	220511,220515,220518	494
Prehnite ()*	Prehnite	Ca₂Al(Si₃Al)O₁₀(OH)₂	8	220506,220512,220514,220515,220516,220517,220518,220523	1898
Pyrite ()*	Pyrite	FeS₂	1	220507	39462
Quartz ()*	Quartz	SiO₂	10	220505,220506,220507,220511,220512,220514,220516,220517,220518,220523	61156
Saponite ()*	Clay Smectite-vermiculite	(Ca,Na)_0.3(Mg,Fe)₃(Si,Al)₄O₁₀(OH)₂·4H₂O	2	220505,220518	301
Silver ()*	Copper	Ag	3	220506,220507,220515	5186
Sphalerite ()*	Sphalerite	ZnS	1	220507	21482
Tenorite ()*	None	CuO	1	220506	1101
Titanite ()*	Titanite	CaTi(SiO₄)O	1	220511	4899

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...