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:
Clark Co., Missouri, USA

Oldest recorded age at locality: 1521.74
Youngest recorded age at locality: 1069.07

mindat Locality ID: 44074
mindat URL: http://www.mindat.org/loc-44074.html

Tectonic Settings:

Total number of sublocalities beneath "Clark Co., Missouri, USA": 7
Total number of bottom-level sublocalities: 7

Number of Child Localities: 7
Child Localities:
Fox River
James Skeens Farm
Keokuk Formation
Sheffler's Rock Shop And Geode Mine
St. Francisville
Warsaw Geodes
Wayland

Latitude: 40°24'40"N
Longitude: 91°35'36"W
Decimal Degree (lat, lon): 40.411111111111,-91.593333333333

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
Hydrotalcite	Kaolinite	Malachite	Marcasite	Millerite	None	Pyrite	Quartz	Rocksalt	Rutile
Sphalerite	Woodwardite

Aragonite ()*	Baryte ()*	Calcite ()*	Chalcopyrite ()*	Dolomite ()*
Fluorite ()*	Galena ()*	Goethite ()*	Gypsum ()*	Hematite ()*
Honessite ()*	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:

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

22 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
Aragonite ()*	Aragonite	Ca(CO₃)	1521.74	1069.07	3	225033,225035,225036	3250
Baryte ()*	Baryte	Ba(SO₄)	1521.74	1069.07	4	225033,225034,225035,225036	11547
Calcite ()*	Calcite	Ca(CO₃)	1521.74	1069.07	5	225031,225033,225034,225035,225036	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	1521.74	1069.07	3	225033,225035,225036	27198
Dolomite ()*	None	CaMg(CO₃)₂	1521.74	1069.07	4	225033,225034,225035,225036	9895
Fluorite ()*	Fluorite	CaF₂	1521.74	1069.07	1	225035	9617
Galena ()*	Rocksalt	PbS			1	225032	24243
Goethite ()*	Diaspore	FeO(OH)	1521.74	1069.07	3	225033,225035,225036	7437
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	1521.74	1069.07	3	225033,225035,225036	6890
Hematite ()*	Corundum	Fe₂O₃	1521.74	1069.07	3	225033,225035,225036	14640
Honessite ()*	Woodwardite Hydrotalcite	(Ni_1-xFe³⁺_x)(SO₄)_x/2(OH)₂·nH₂O (x < 0.5, n < 3x/2)	1521.74	1069.07	2	225033,225035	25
Jarosite ()*	Alunite	KFe³⁺₃(SO₄)₂(OH)₆			2	225033,225036	2228
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	1521.74	1069.07	4	225033,225034,225035,225036	5591
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	1521.74	1069.07	3	225033,225035,225036	12537
Marcasite ()*	Marcasite	FeS₂	1521.74	1069.07	4	225033,225034,225035,225036	5674
Millerite ()*	Millerite	NiS	1521.74	1069.07	2	225033,225035	1066
Pyrite ()*	Pyrite	FeS₂	1521.74	1069.07	6	225032,225033,225034,225035,225036,225037	39462
Pyrolusite ()*	Rutile	MnO₂	1521.74	1069.07	3	225033,225035,225036	3106
Quartz ()*	Quartz	SiO₂	1521.74	1069.07	6	225031,225032,225033,225034,225035,225036	61156
Siderite ()*	Calcite	Fe(CO₃)	1521.74	1069.07	3	225033,225035,225036	6417
Smithsonite ()*	Calcite	Zn(CO₃)	1521.74	1069.07	3	225033,225035,225036	2473
Sphalerite ()*	Sphalerite	ZnS	1521.74	1069.07	3	225033,225035,225036	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
	USGS-Rb-Sr-00260	1521.74	1521.74	1521.74	Rb-Sr	minimum age of intrusion		biotite							25512	St. Francisville, Clark Co., Missouri, USA		USGS-Rb-Sr		USGS-Rb-Sr
	USGS-Rb-Sr-00261	1229.07	1069.07	1149.07±80	Rb-Sr	age of intrusion		k-feldspar							25512	St. Francisville, Clark Co., Missouri, USA		USGS-Rb-Sr		USGS-Rb-Sr

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...