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:
West Belt, Calaveras Co., California, USA

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

mindat Locality ID: 249046
mindat URL: http://www.mindat.org/loc-249046.html

Tectonic Settings:

Total number of sublocalities beneath "West Belt, Calaveras Co., California, USA": 82
Total number of bottom-level sublocalities: 71

Number of Child Localities: 9
Child Localities:
Alto District
Barth Mountain
Bear Mountain
Crossette Mine
Hodson District (Madam Felix District; Felix District)
Lost City
New Hogan Dam
New Melones Dam
Siberia Summit

Latitude: 38°1'44"N
Longitude: 120°39'46"W
Decimal Degree (lat, lon): 38.028888888889,-120.66277777778

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.

Allophane	Amphibole	Analcime	Arsenopyrite	Axinite	Calcite	Chalcopyrite	Chlorite	Clay	Clinozoisite
Copper	Corundum	Diaspore	Epidote	Feldspar	Mica	None	Not in a structural group	Palygorskite	Pyrite
Pyroxene	Quartz	Rhodonite	Rocksalt	Rutile	Scapolite	Sphalerite	Spinel	Tetrahedrite	Titanite

Actinolite ()*	Aegirine ()*	Albite ()*	Analcime ()*	Ankerite ()*
Arsenopyrite ()*	Axinite-(Fe) ()*	Azurite ()*	Bementite ()*	Calcite ()*
Chalcopyrite ()*	Chromite ()*	Clinochlore ()*	Epidote ()*	Galena ()*
Goethite ()*	Gold ()*	Hematite ()*	Magnetite ()*	Marialite ()*
Muscovite ()*	Neotocite ()*	Palygorskite ()*	Paragonite ()*	Pyrite ()*
Pyrolusite ()*	Quartz ()*	Rhodochrosite ()*	Rhodonite ()*	Riebeckite ()*
Rutile ()*	Silver ()*	Sphalerite ()*	Tetrahedrite-(Zn) ()*	Titanite ()*

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 B C Ca Cl Cr Cu Fe H K Mg Mn Na O Pb S Sb Si Ti Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Allophane Amphibole Analcime Arsenopyrite Axinite Calcite Chalcopyrite Chlorite Clay Clinozoisite
Copper Corundum Diaspore Epidote Feldspar Mica None Not in a structural group Palygorskite Pyrite
Pyroxene Quartz Rhodonite Rocksalt Rutile Scapolite Sphalerite Spinel Tetrahedrite Titanite

35 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
Actinolite ()*	Amphibole	Ca₂(Mg_4.5-2.5Fe²⁺_0.5-2.5)Si₈O₂₂(OH)₂	100	100	1	153521	3419
Aegirine ()*	Pyroxene	NaFe³⁺Si₂O₆	100	100	1	153522	1022
Albite ()*	Feldspar	Na(AlSi₃O₈)	100	100	2	153521,153522	8803
Analcime ()*	Analcime	Na(AlSi₂O₆)·H₂O	100	100	1	153522	1627
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	100	100	2	153485,153486	3092
Arsenopyrite ()*	Arsenopyrite	FeAsS	100	100	2	153484,153486	9052
Axinite-(Fe) ()*	Axinite	Ca₄Fe²⁺₂Al₄[B₂Si₈O₃₀](OH)₂	100	100	1	153521	260
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂	100	100	1	153470	5509
Bementite ()*	Clay	Mn₇Si₆O₁₅(OH)₈	100	100	1	153500	173
Calcite ()*	Calcite	Ca(CO₃)	100	100	3	153485,153486,153521	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	100	100	2	153486,153521	27198
Chromite ()*	Spinel	Fe²⁺Cr₂O₄	100	100	2	153498,153508	3902
Clinochlore ()*	Chlorite Clay	Mg₅Al(AlSi₃O₁₀)(OH)₈	100	100	1	153521	1756
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	100	100	1	153521	8173
Galena ()*	Rocksalt	PbS	100	100	2	153485,153486	24243
Goethite ()*	Diaspore	FeO(OH)	100	100	1	153486	7437
Gold ()*	Copper	Au	100	100	52	153457,153459,153460,153461,153462,153463,153464,153466,153468,153469,153470,153472,153473,153476,153477,153478,153479,153480,153481,153482,153483,153484,153485,153486,153487,153488,153492,153493,153494,153496,153497,153501,153502,153504,153505,153514,153515,153516,153517,153518,153519,153523,153526,153527,153528,153529,153530,153531,153532,153533,153534,153537	30554
Hematite ()*	Corundum	Fe₂O₃	100	100	2	153486,153522	14640
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	100	100	1	153522	14899
Marialite ()*	Scapolite	Na₄Al₃Si₉O₂₄Cl	100	100	1	153522	139
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	100	100	4	153476,153485,153486,153522	17380
Neotocite ()*	Allophane	(Mn,Fe)SiO₃·H₂O (?)	100	100	1	153500	186
Palygorskite ()*	Palygorskite Clay	(Mg,Al)₂Si₄O₁₀(OH)·4H₂O	100	100	1	153521	306
Paragonite ()*	Mica Clay	NaAl₂(Si₃Al)O₁₀(OH)₂	100	100	1	153522	247
Pyrite ()*	Pyrite	FeS₂	100	100	10	153457,153476,153484,153485,153486,153505,153521,153522,153532,153537	39462
Pyrolusite ()*	Rutile	MnO₂	100	100	1	153503	3106
Quartz ()*	Quartz	SiO₂	100	100	48	153457,153459,153460,153461,153462,153463,153464,153466,153468,153469,153470,153472,153473,153476,153478,153479,153480,153481,153483,153484,153485,153486,153487,153488,153492,153494,153496,153497,153501,153502,153504,153505,153506,153514,153515,153517,153521,153522,153526,153527,153528,153529,153530,153531,153532,153533,153534,153537	61156
Rhodochrosite ()*	Calcite	Mn(CO₃)	100	100	1	153500	1711
Rhodonite ()*	Rhodonite	CaMn₃Mn(Si₅O₁₅)	100	100	1	153503	969
Riebeckite ()*	Amphibole	Na₂(Fe²⁺₃Fe³⁺₂)Si₈O₂₂(OH)₂	100	100	1	153522	375
Rutile ()*	Rutile	TiO₂	100	100	1	153522	5614
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
Titanite ()*	Titanite	CaTi(SiO₄)O	100	100	1	153522	4899

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
X050007	New Melones Dam, West Belt, Calaveras Co., California, USA	https://rruff.info/X050007

All locality data graciously provided by mindat.org

All age data...