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:
Hardesty Homestead Mine (Hardesty Mine), Keystone District, Pennington Co., South Dakota, USA

Oldest recorded age at locality: 1700
Youngest recorded age at locality: 1700

mindat Locality ID: 45066
mindat URL: http://www.mindat.org/loc-45066.html

Tectonic Settings:

Total number of sublocalities beneath "Hardesty Homestead Mine (Hardesty Mine), Keystone District, Pennington Co., South Dakota, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 0°0'0"N
Longitude: 0°0'0"E
Decimal Degree (lat, lon): 0,0

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	Calcite	Clay	Feldspar	Mica	None	Pyroxene	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 C F H K Li Mn Na O P Si Sn

Elements from minerals reported directly at this locality: Al Be C F H K Li Mn Na O P Si Sn

Structural Groups for minerals in this locality:
Beryl Calcite Clay Feldspar Mica None Pyroxene Quartz Rutile Topaz

11 IMA Minerals at location:

Albite ()*	Amblygonite ()*	Beryl ()*	Cassiterite ()*	Graphite ()*
Microcline ()*	Muscovite ()*	Quartz ()*	Rhodochrosite ()*	Spodumene ()*
Topaz ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Albite ()*	Feldspar	Na(AlSi₃O₈)	1700	1700	8803
Amblygonite ()*	None	LiAl(PO₄)F	1700	1700	244
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈	1700	1700	4286
Cassiterite ()*	Rutile	SnO₂	1700	1700	5171
Graphite ()*	None	C	1700	1700	2812
Microcline ()*	Feldspar	K(AlSi₃O₈)	1700	1700	4924
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	1700	1700	17380
Quartz ()*	Quartz	SiO₂	1700	1700	61156
Rhodochrosite ()*	Calcite	Mn(CO₃)	1700	1700	1711
Spodumene ()*	Pyroxene	LiAlSi₂O₆	1700	1700	688
Topaz ()*	Topaz	Al₂SiO₄F₂	1700	1700	1476

1 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
	Alexandra-0372	1700	1700	1700		Age of pegmatite					Yes			Li, Be, Sn, Cs, Ta, Nb, U	122418	Black Elk Peak (Harney Peak), Pennington Co., South Dakota, USA	Harney Peak	Norton and Redden (1990)	10.2138/am.2008.2633	AM75_631

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...