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:
Alpena Co., Michigan, USA

mindat Locality ID: 24816
mindat URL: http://www.mindat.org/loc-24816.html

Tectonic Settings:

Total number of sublocalities beneath "Alpena Co., Michigan, USA": 11
Total number of bottom-level sublocalities: 8

Number of Child Localities: 8
Child Localities:
Alpena
Great Lakes Stone And Lime Company Property
Limestone Quarry - National Gypsum
Paxton
Rockport
Roleau Sand Pits
Squaw Bay
Sulfur Island

Latitude: 45°4'9"N
Longitude: 83°27'32"W
Decimal Degree (lat, lon): 45.069166666667,-83.458888888889

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.

Aragonite	Baryte	Calcite	Chalcopyrite	Marcasite	None	Pyrite	Quartz	Rocksalt	Sphalerite

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: Ba C Ca Cl Cu Fe Mg Na O S Si Sr Zn

Elements from minerals reported directly at this locality: Cl Na

Structural Groups for minerals in this locality:
Aragonite Baryte Calcite Chalcopyrite Marcasite None Pyrite Quartz Rocksalt Sphalerite

12 IMA Minerals at location:

Ankerite ()*	Baryte ()*	Calcite ()*	Chalcopyrite ()*	Dolomite ()*
Halite ()*	Marcasite ()*	Pyrite ()*	Quartz ()*	Siderite ()*
Sphalerite ()*	Strontianite ()*

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	1	219971	3092
Baryte ()*	Baryte	Ba(SO₄)	1	219972	11547
Calcite ()*	Calcite	Ca(CO₃)	3	219972,219976,219980	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	2	219972,219976	27198
Dolomite ()*	None	CaMg(CO₃)₂	3	219972,219976,219980	9895
Halite ()*	Rocksalt	NaCl	0		1398
Marcasite ()*	Marcasite	FeS₂	3	219972,219976,219980	5674
Pyrite ()*	Pyrite	FeS₂	4	219972,219976,219980,219981	39462
Quartz ()*	Quartz	SiO₂	2	219976,219980	61156
Siderite ()*	Calcite	Fe(CO₃)	1	219971	6417
Sphalerite ()*	Sphalerite	ZnS	2	219972,219976	21482
Strontianite ()*	Aragonite	Sr(CO₃)	1	219972	589

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...