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:
Collier Mine (Blood Mine; Sandwich Mine), Murphys, Murphys District (Esmeralda District; Sperry District), East Belt, Calaveras Co., California, USA

Oldest recorded age at locality: 100
Youngest recorded age at locality: 100

mindat Locality ID: 75063
mindat URL: http://www.mindat.org/loc-75063.html

Tectonic Settings:

Total number of sublocalities beneath "Collier Mine (Blood Mine; Sandwich Mine), Murphys, Murphys District (Esmeralda District; Sperry District), East Belt, Calaveras Co., California, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 38°8'21"N
Longitude: 120°23'25"W
Decimal Degree (lat, lon): 38.139166666667,-120.39027777778

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.

Amphibole	Arsenic	Arsenopyrite	Baryte	Chalcopyrite	Copper	None	Pyrite	Quartz	Rocksalt
Sphalerite	Stibnite

Antimony ()*	Arsenopyrite ()*	Baryte ()*	Chalcocite ()*	Chalcopyrite ()*
Galena ()*	Glaucophane ()*	Gold ()*	Hessite ()*	Petzite ()*
Pyrite ()*	Quartz ()*	Sphalerite ()*	Stibnite ()*

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: Ag Al As Au Ba Cu Fe H Mg Na O Pb S Sb Si Te Zn

Elements from minerals reported directly at this locality: Ag Al As Au Ba Cu Fe H Mg Na O Pb S Sb Si Te Zn

Structural Groups for minerals in this locality:
Amphibole Arsenic Arsenopyrite Baryte Chalcopyrite Copper None Pyrite Quartz Rocksalt
Sphalerite Stibnite

14 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Antimony ()*	Arsenic	Sb	100	100	363
Arsenopyrite ()*	Arsenopyrite	FeAsS	100	100	9052
Baryte ()*	Baryte	Ba(SO₄)	100	100	11547
Chalcocite ()*	None	Cu₂S	100	100	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	100	100	27198
Galena ()*	Rocksalt	PbS	100	100	24243
Glaucophane ()*	Amphibole	Na₂(Mg₃Al₂)Si₈O₂₂(OH)₂	100	100	286
Gold ()*	Copper	Au	100	100	30554
Hessite ()*	None	Ag₂Te	100	100	804
Petzite ()*	None	Ag₃AuTe₂	100	100	409
Pyrite ()*	Pyrite	FeS₂	100	100	39462
Quartz ()*	Quartz	SiO₂	100	100	61156
Sphalerite ()*	Sphalerite	ZnS	100	100	21482
Stibnite ()*	Stibnite	Sb₂S₃	100	100	3418

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
	Mo-00156	100	100								Yes		Molybdenite	Mo	16293	Calaveras Co., California, USA	Calaveras County	Brock (1972)	10.1130/0016-7606(1972)83[3391:GOGHSC]2.0.CO;2	GSAB83_3391

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...