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:
Hamilton, Hancock Co., Illinois, USA

mindat Locality ID: 25508
mindat URL: http://www.mindat.org/loc-25508.html

Tectonic Settings:

Total number of sublocalities beneath "Hamilton, Hancock Co., Illinois, USA": 3
Total number of bottom-level sublocalities: 3

Number of Child Localities: 3
Child Localities:
Gray Quarry
Hamilton Clay Company Pits
Jacob's Geode Mine

Latitude: 40°23'15"N
Longitude: 91°20'55"W
Decimal Degree (lat, lon): 40.3875,-91.348611111111

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.

Alunite	Aragonite	Baryte	Calcite	Chalcopyrite	Clay	Corundum	Diaspore	Fluorite	Gypsum
Kaolinite	Malachite	Marcasite	Millerite	None	Pyrite	Quartz	Rocksalt	Rutile	Sphalerite
Spinel

Ankerite ()*	Aragonite ()*	Baryte ()*	Calcite ()*	Chalcocite ()*
Chalcopyrite ()*	Dolomite ()*	Fluorite ()*	Galena ()*	Goethite ()*
Gypsum ()*	Hematite ()*	Jarosite ()*	Kaolinite ()*	Malachite ()*
Marcasite ()*	Millerite ()*	Polydymite ()*	Pyrite ()*	Pyrolusite ()*
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 F Fe H K Mg Mn Ni O Pb S Si Zn

Elements from minerals reported directly at this locality: C Ca Cu F Fe H K Mn O Pb S

Structural Groups for minerals in this locality:
Alunite Aragonite Baryte Calcite Chalcopyrite Clay Corundum Diaspore Fluorite Gypsum
Kaolinite Malachite Marcasite Millerite None Pyrite Quartz Rocksalt Rutile Sphalerite
Spinel

24 IMA Minerals at location:

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	2	212561,212563	3092
Aragonite ()*	Aragonite	Ca(CO₃)	1	212561	3250
Baryte ()*	Baryte	Ba(SO₄)	2	212561,212563	11547
Calcite ()*	Calcite	Ca(CO₃)	2	212561,212563	27770
Chalcocite ()*	None	Cu₂S	1	212561	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	1	212561	27198
Dolomite ()*	None	CaMg(CO₃)₂	1	212561	9895
Fluorite ()*	Fluorite	CaF₂	0		9617
Galena ()*	Rocksalt	PbS	0		24243
Goethite ()*	Diaspore	FeO(OH)	0		7437
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	2	212561,212563	6890
Hematite ()*	Corundum	Fe₂O₃	1	212561	14640
Jarosite ()*	Alunite	KFe³⁺₃(SO₄)₂(OH)₆	0		2228
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	2	212561,212563	5591
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	0		12537
Marcasite ()*	Marcasite	FeS₂	2	212561,212563	5674
Millerite ()*	Millerite	NiS	1	212561	1066
Polydymite ()*	Spinel	Ni²⁺Ni³⁺₂S₄	1	212561	131
Pyrite ()*	Pyrite	FeS₂	2	212561,212563	39462
Pyrolusite ()*	Rutile	MnO₂	0		3106
Quartz ()*	Quartz	SiO₂	3	212561,212562,212563	61156
Smithsonite ()*	Calcite	Zn(CO₃)	1	212561	2473
Sphalerite ()*	Sphalerite	ZnS	2	212561,212563	21482
Tenorite ()*	None	CuO	1	212561	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...