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:
Little Elk Creek, Nemo, Lawrence Co., South Dakota, USA

Oldest recorded age at locality: 1871.18
Youngest recorded age at locality: 1731.18

mindat Locality ID: 122087
mindat URL: http://www.mindat.org/loc-122087.html

Tectonic Settings:

Total number of sublocalities beneath "Little Elk Creek, Nemo, Lawrence Co., South Dakota, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 44°14'47"N
Longitude: 103°31'9"W
Decimal Degree (lat, lon): 44.246388888889,-103.51916666667

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.

Clinozoisite	Epidote	Nickeline	None	Rutile	Spinel	Titanite	Zircon

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 Ca Fe H O S Si Ti Zr

Elements from minerals reported directly at this locality: Al Ca Fe H O S Si Ti Zr

Structural Groups for minerals in this locality:
Clinozoisite Epidote Nickeline None Rutile Spinel Titanite Zircon

7 IMA Minerals at location:

Epidote ()*	Magnetite ()*	Pyrrhotite ()*	Rutile ()*	Titanite ()*
Zircon ()*	Zoisite ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	1871.18	1731.18	8173
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	1871.18	1731.18	14899
Pyrrhotite ()*	Nickeline	Fe₇S₈	1871.18	1731.18	9056
Rutile ()*	Rutile	TiO₂	1871.18	1731.18	5614
Titanite ()*	Titanite	CaTi(SiO₄)O	1871.18	1731.18	4899
Zircon ()*	Zircon	Zr(SiO₄)	1871.18	1731.18	5251
Zoisite ()*	Epidote	Ca₂Al₃[Si₂O₇][SiO₄]O(OH)	1871.18	1731.18	1025

3 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-04818	1871.18	1731.18	1801.18±70	Rb-Sr	age of metamorphic crystallization	whole rock	122087	Little Elk Creek, Nemo, Lawrence Co., South Dakota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04819	1871.18	1731.18	1801.18±70	Rb-Sr	age of metamorphic crystallization	whole rock	122087	Little Elk Creek, Nemo, Lawrence Co., South Dakota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04822	1863.36	1863.36	1863.36	Rb-Sr	age of metamorphic crystallization	whole rock	122087	Little Elk Creek, Nemo, Lawrence Co., South Dakota, USA	USGS-Rb-Sr	USGS-Rb-Sr

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...