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:
Hicks, Hardin Co., Illinois, USA

Oldest recorded age at locality: 282
Youngest recorded age at locality: 239

mindat Locality ID: 205032
mindat URL: http://www.mindat.org/loc-205032.html

Tectonic Settings:

Total number of sublocalities beneath "Hicks, Hardin Co., Illinois, USA": 7
Total number of bottom-level sublocalities: 6

Number of Child Localities: 3
Child Localities:
Hicks Branch
Hicks Dome
Hicks Prospect

Latitude: 37°32'14"N
Longitude: 88°23'34"W
Decimal Degree (lat, lon): 37.537222222222,-88.392777777778

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.

Apatite	Baryte	Calcite	Chalcopyrite	Fluorite	Malachite	None	Not in a structural group	Pyrite	Pyroxene
Quartz	Rhabdophane	Rocksalt	Sphalerite

Aegirine ()*	Aegirine-augite ()*	Baryte ()*	Bertrandite ()*	Brockite ()*
Calcite ()*	Chalcopyrite ()*	Dolomite ()*	Fluorite ()*	Galena ()*
Malachite ()*	Pyrite ()*	Pyromorphite ()*	Quartz ()*	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 Be C Ca Ce Cl Cu F Fe H Mg Na O P Pb S Si Th Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Apatite Baryte Calcite Chalcopyrite Fluorite Malachite None Not in a structural group Pyrite Pyroxene
Quartz Rhabdophane Rocksalt Sphalerite

15 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Aegirine ()*	Pyroxene	NaFe³⁺Si₂O₆	282	239	1	212661	1022
Aegirine-augite ()*	Pyroxene	(Ca,Na)(Fe³⁺,Mg,Fe²⁺)Si₂O₆	282	239	1	212661	286
Baryte ()*	Baryte	Ba(SO₄)	282	239	1	212664	11547
Bertrandite ()*	Not in a structural group	Be₄Si₂O₇(OH)₂	282	239	1	212664	606
Brockite ()*	Rhabdophane	(Ca,Th,Ce)(PO₄)·H₂O	282	239	1	212664	48
Calcite ()*	Calcite	Ca(CO₃)	282	239	2	212662,212664	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂			1	212665	27198
Dolomite ()*	None	CaMg(CO₃)₂	282	239	1	212661	9895
Fluorite ()*	Fluorite	CaF₂	282	239	5	212662,212663,212664,212665,212666	9617
Galena ()*	Rocksalt	PbS	282	239	2	212662,212664	24243
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂			1	212665	12537
Pyrite ()*	Pyrite	FeS₂			1	212665	39462
Pyromorphite ()*	Apatite	Pb₅(PO₄)₃Cl			1	212663	1725
Quartz ()*	Quartz	SiO₂	282	239	1	212664	61156
Sphalerite ()*	Sphalerite	ZnS	282	239	2	212662,212664	21482

2 Ages assigned to this locality:

	Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Prioritized?	Sample Source	Sample Num	Run Num	Age from other Locality	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
	ree-00658	265	239	252 ± 13 Ma and 269 ± 13 Ma (K-Ar, bio, mica peridotite)	K-Ar			biotite							168046	Hicks Dome REE-Th Prospects (Henry Hamp; Jr. No. 1 Oil Test Well; And Other Prospects), Hicks Dome, Hicks, Hardin Co., Illinois, USA	Hicks Dome	Orris and Grauch (2002)		USGSOFR02_189
	ree-00805	282	256	252 ± 13 Ma and 269 ± 13 Ma (K-Ar, bio, mica peridotite)	K-Ar			biotite							168046	Hicks Dome REE-Th Prospects (Henry Hamp; Jr. No. 1 Oil Test Well; And Other Prospects), Hicks Dome, Hicks, Hardin Co., Illinois, USA	Hicks Dome	Orris and Grauch (2002)		USGSOFR02_189

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...