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:
Hodson District (Madam Felix District; Felix District), West Belt, Calaveras Co., California, USA

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

mindat Locality ID: 259496
mindat URL: http://www.mindat.org/loc-259496.html

Tectonic Settings:

Total number of sublocalities beneath "Hodson District (Madam Felix District; Felix District), West Belt, Calaveras Co., California, USA": 24
Total number of bottom-level sublocalities: 21

Number of Child Localities: 2
Child Localities:
Hodson
Salt Spring Valley

Latitude: 38°0'43"N
Longitude: 120°42'7"W
Decimal Degree (lat, lon): 38.011944444444,-120.70194444444

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.

Arsenopyrite	Calcite	Chalcopyrite	Clay	Copper	Corundum	Diaspore	Mica	None	Pyrite
Quartz	Rocksalt	Sphalerite	Spinel	Tetrahedrite

Ankerite ()*	Arsenopyrite ()*	Calcite ()*	Chalcopyrite ()*	Chromite ()*
Galena ()*	Goethite ()*	Gold ()*	Hematite ()*	Muscovite ()*
Pyrite ()*	Quartz ()*	Silver ()*	Sphalerite ()*	Tetrahedrite-(Zn) ()*

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 C Ca Cr Cu Fe H K O Pb S Sb Si Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Arsenopyrite Calcite Chalcopyrite Clay Copper Corundum Diaspore Mica None Pyrite
Quartz Rocksalt Sphalerite Spinel Tetrahedrite

15 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
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	100	100	2	153485,153486	3092
Arsenopyrite ()*	Arsenopyrite	FeAsS	100	100	2	153484,153486	9052
Calcite ()*	Calcite	Ca(CO₃)	100	100	2	153485,153486	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	100	100	1	153486	27198
Chromite ()*	Spinel	Fe²⁺Cr₂O₄	100	100	1	153498	3902
Galena ()*	Rocksalt	PbS	100	100	2	153485,153486	24243
Goethite ()*	Diaspore	FeO(OH)	100	100	1	153486	7437
Gold ()*	Copper	Au	100	100	18	153476,153477,153478,153479,153480,153481,153482,153483,153484,153485,153486,153487,153488,153492,153493,153494,153496,153497	30554
Hematite ()*	Corundum	Fe₂O₃	100	100	1	153486	14640
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	100	100	3	153476,153485,153486	17380
Pyrite ()*	Pyrite	FeS₂	100	100	4	153476,153484,153485,153486	39462
Quartz ()*	Quartz	SiO₂	100	100	15	153476,153478,153479,153480,153481,153483,153484,153485,153486,153487,153488,153492,153494,153496,153497	61156
Silver ()*	Copper	Ag	100	100	1	153486	5186
Sphalerite ()*	Sphalerite	ZnS	100	100	2	153485,153486	21482
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃	100	100	1	153486	5317

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...