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:
Gray Quarry, Hamilton, Hancock Co., Illinois, USA

mindat Locality ID: 31418
mindat URL: http://www.mindat.org/loc-31418.html

Tectonic Settings:

Total number of sublocalities beneath "Gray Quarry, Hamilton, Hancock Co., Illinois, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 40°23'4"N
Longitude: 91°21'28"W
Decimal Degree (lat, lon): 40.384444444444,-91.357777777778

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	Clay	Corundum	Gypsum	Kaolinite	Marcasite	Millerite
None	Pyrite	Quartz	Sphalerite	Spinel

Ankerite ()*	Aragonite ()*	Baryte ()*	Calcite ()*	Chalcocite ()*
Chalcopyrite ()*	Dolomite ()*	Gypsum ()*	Hematite ()*	Kaolinite ()*
Marcasite ()*	Millerite ()*	Polydymite ()*	Pyrite ()*	Quartz ()*
Smithsonite ()*	Sphalerite ()*	Tenorite ()*

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 Ba C Ca Cu Fe H Mg Ni O S Si Zn

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

Structural Groups for minerals in this locality:
Aragonite Baryte Calcite Chalcopyrite Clay Corundum Gypsum Kaolinite Marcasite Millerite
None Pyrite Quartz Sphalerite Spinel

18 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of localities containing mineral
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	3092
Aragonite ()*	Aragonite	Ca(CO₃)	3250
Baryte ()*	Baryte	Ba(SO₄)	11547
Calcite ()*	Calcite	Ca(CO₃)	27770
Chalcocite ()*	None	Cu₂S	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	27198
Dolomite ()*	None	CaMg(CO₃)₂	9895
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	6890
Hematite ()*	Corundum	Fe₂O₃	14640
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	5591
Marcasite ()*	Marcasite	FeS₂	5674
Millerite ()*	Millerite	NiS	1066
Polydymite ()*	Spinel	Ni²⁺Ni³⁺₂S₄	131
Pyrite ()*	Pyrite	FeS₂	39462
Quartz ()*	Quartz	SiO₂	61156
Smithsonite ()*	Calcite	Zn(CO₃)	2473
Sphalerite ()*	Sphalerite	ZnS	21482
Tenorite ()*	None	CuO	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...