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:
Lee Co., Iowa, USA

mindat Locality ID: 31447
mindat URL: http://www.mindat.org/loc-31447.html

Tectonic Settings:

Total number of sublocalities beneath "Lee Co., Iowa, USA": 6
Total number of bottom-level sublocalities: 5

Number of Child Localities: 5
Child Localities:
Keokuk
Keokuk Dam
Limestone Quarries
Mississippi River Dredge Spoil Piles
West Point

Latitude: 40°30'4"N
Longitude: 91°25'56"W
Decimal Degree (lat, lon): 40.501111111111,-91.432222222222

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

Ankerite ()*	Aragonite ()*	Baryte ()*	Calcite ()*	Chalcocite ()*
Chalcopyrite ()*	Dolomite ()*	Fluorite ()*	Galena ()*	Goethite ()*
Gypsum ()*	Hematite ()*	Jarosite ()*	Kaolinite ()*	Malachite ()*
Marcasite ()*	Millerite ()*	Pyrite ()*	Pyrolusite ()*	Quartz ()*
Siderite ()*	Smithsonite ()*	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: 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 Fe Mg O

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

23 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	0		3092
Aragonite ()*	Aragonite	Ca(CO₃)	1	214878	3250
Baryte ()*	Baryte	Ba(SO₄)	1	214878	11547
Calcite ()*	Calcite	Ca(CO₃)	5	214878,214879,214880,214881,214883	27770
Chalcocite ()*	None	Cu₂S	1	214878	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	1	214878	27198
Dolomite ()*	None	CaMg(CO₃)₂	1	214878	9895
Fluorite ()*	Fluorite	CaF₂	1	214878	9617
Galena ()*	Rocksalt	PbS	1	214878	24243
Goethite ()*	Diaspore	FeO(OH)	1	214878	7437
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	1	214878	6890
Hematite ()*	Corundum	Fe₂O₃	1	214878	14640
Jarosite ()*	Alunite	KFe³⁺₃(SO₄)₂(OH)₆	1	214878	2228
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	1	214878	5591
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	1	214878	12537
Marcasite ()*	Marcasite	FeS₂	1	214878	5674
Millerite ()*	Millerite	NiS	4	214878,214879,214880,214881	1066
Pyrite ()*	Pyrite	FeS₂	1	214878	39462
Pyrolusite ()*	Rutile	MnO₂	1	214878	3106
Quartz ()*	Quartz	SiO₂	1	214878	61156
Siderite ()*	Calcite	Fe(CO₃)	1	214878	6417
Smithsonite ()*	Calcite	Zn(CO₃)	1	214878	2473
Sphalerite ()*	Sphalerite	ZnS	1	214878	21482

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL
R070323	Keokuk, Lee Co., Iowa, USA	https://rruff.info/R070323

All locality data graciously provided by mindat.org

All age data...