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:
Sheahan Granite Quarry, Iron Co., Missouri, USA

Oldest recorded age at locality: 1338.14
Youngest recorded age at locality: 1154.14

mindat Locality ID: 291870
mindat URL: http://www.mindat.org/loc-291870.html

Tectonic Settings:

Total number of sublocalities beneath "Sheahan Granite Quarry, Iron Co., Missouri, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 37°40'8"N
Longitude: 90°40'56"W
Decimal Degree (lat, lon): 37.668888888889,-90.682222222222

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.

Beryl	Chalcopyrite	Clay	Fluorite	Mica	None	Quartz	Rutile	Topaz

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 Be Ca Cu F Fe H K O S Si Sn Ti

Elements from minerals reported directly at this locality: Al Be Ca Cu F Fe H K O S Si Sn Ti

Structural Groups for minerals in this locality:
Beryl Chalcopyrite Clay Fluorite Mica None Quartz Rutile Topaz

8 IMA Minerals at location:

Beryl ()*	Cassiterite ()*	Chalcopyrite ()*	Fluorite ()*	Muscovite ()*
Quartz ()*	Rutile ()*	Topaz ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈	1338.14	1154.14	4286
Cassiterite ()*	Rutile	SnO₂	1338.14	1154.14	5171
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	1338.14	1154.14	27198
Fluorite ()*	Fluorite	CaF₂	1338.14	1154.14	9617
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	1338.14	1154.14	17380
Quartz ()*	Quartz	SiO₂	1338.14	1154.14	61156
Rutile ()*	Rutile	TiO₂	1338.14	1154.14	5614
Topaz ()*	Topaz	Al₂SiO₄F₂	1338.14	1154.14	1476

6 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Sample Source	MinDat Locality ID	Dated Locality (Max Age)	Reference	Reference ID
USGS-Rb-Sr-04942	1338.14	1154.14	1246.14±92	Rb-Sr	minimum age of intrusion	whole rock	291870	Sheahan Granite Quarry, Iron Co., Missouri, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04943	1338.14	1154.14	1246.14±92	Rb-Sr	minimum age of intrusion	whole rock	291870	Sheahan Granite Quarry, Iron Co., Missouri, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04948	1338.14	1154.14	1246.14±92	Rb-Sr	minimum age of intrusion	whole rock	291870	Sheahan Granite Quarry, Iron Co., Missouri, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04949	1338.14	1154.14	1246.14±92	Rb-Sr	minimum age of intrusion	whole rock	291870	Sheahan Granite Quarry, Iron Co., Missouri, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04950	1338.14	1154.14	1246.14±92	Rb-Sr	minimum age of intrusion	whole rock	291870	Sheahan Granite Quarry, Iron Co., Missouri, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04951	1338.14	1154.14	1246.14±92	Rb-Sr	minimum age of intrusion	whole rock	291870	Sheahan Granite Quarry, Iron 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...