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:
Napa Co., California, USA

Oldest recorded age at locality: 164
Youngest recorded age at locality: 4

mindat Locality ID: 3512
mindat URL: http://www.mindat.org/loc-3512.html

Tectonic Settings:

Total number of sublocalities beneath "Napa Co., California, USA": 218
Total number of bottom-level sublocalities: 182

Number of Child Localities: 22
Child Localities:
American Canyon (Napa Junction)
Berryessa Valley
H And M Ranch
Jumper Mines
Knoxville Area
Knoxville District
Lake Berryessa Area
Lake Hennessey
Lombard
Lucky Girl Mine
Mayacmas Mts (Mayacamas Mts)
McCreary Lake
Monticello
Napa
Napa Consolidated Mine
Phillips Springs
Pioneer Mine
Reed Mine
Silver Bar Mine
Spanish Flat
Vichy Springs
Yountville

Latitude: 38°31'49"N
Longitude: 122°19'"W
Decimal Degree (lat, lon): 38.530277777778,-122.31666666667

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.

Acanthite	Alunite	Amarantite	Amorphous	Aragonite	Arsenolite	Arsenopyrite	Baryte	Botryogen	Calcite
Clay	Copiapite	Copper	Coquimbite	Corundum	Covellite	Cristobalite	Epsomite	Feldspar	Gypsum
Halotrichite	Kaolinite	Marcasite	Melanterite	Mica	Millerite	None	Not in a structural group	Perovskite	Prehnite
Pyrite	Quartz	Rocksalt	Rutile	Römerite	Serpentine	Skutterudite	Smectite-vermiculite	Sphalerite	Spinel
Starkeyite	Stibnite	Sulphur	Vivianite	Voltaite	Wollastonite

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 C Ca Cl Co Cr Cu Fe H Hg K Mg Mn N Na Ni O Pb S Sb Se Si

Elements from minerals reported directly at this locality: Fe H O S

Structural Groups for minerals in this locality:
Acanthite Alunite Amarantite Amorphous Aragonite Arsenolite Arsenopyrite Baryte Botryogen Calcite
Clay Copiapite Copper Coquimbite Corundum Covellite Cristobalite Epsomite Feldspar Gypsum
Halotrichite Kaolinite Marcasite Melanterite Mica Millerite None Not in a structural group Perovskite Prehnite
Pyrite Quartz Rocksalt Rutile Römerite Serpentine Skutterudite Smectite-vermiculite Sphalerite Spinel
Starkeyite Stibnite Sulphur Vivianite Voltaite Wollastonite

74 IMA Minerals at location:

Acanthite ()*	Alunogen ()*	Ammonioalunite ()*	Aragonite ()*	Arsenopyrite ()*
Baryte ()*	Botryogen ()*	Buddingtonite ()*	Calcite ()*	Calomel ()*
Chalcocite ()*	Chlorargyrite ()*	Chromite ()*	Chrysotile ()*	Cinnabar ()*
Copiapite ()*	Copper ()*	Coquimbite ()*	Covellite ()*	Crednerite ()*
Cristobalite ()*	Cuprite ()*	Dolomite ()*	Epsomite ()*	Erythrite ()*
Fibroferrite ()*	Galena ()*	Gold ()*	Gypsum ()*	Hematite ()*
Hohmannite ()*	Hydromagnesite ()*	Idrialite ()*	Jamesonite ()*	Kalinite ()*
Kaolinite ()*	Kornelite ()*	Magnesiochromite ()*	Magnesiocopiapite ()*	Magnesite ()*
Marcasite ()*	Melanophlogite ()*	Melanterite ()*	Mendozite ()*	Mercury ()*
Metacinnabar ()*	Miargyrite ()*	Millerite ()*	Mirabilite ()*	Montmorillonite ()*
Montroydite ()*	Morenosite ()*	Muscovite ()*	Opal ()*	Prehnite ()*
Proustite ()*	Pyrargyrite ()*	Pyrite ()*	Pyrolusite ()*	Quartz ()*
Redingtonite ()*	Rhodochrosite ()*	Römerite ()*	Rozenite ()*	Saponite ()*
Senarmontite ()*	Siderite ()*	Silver ()*	Skutterudite ()*	Stibnite ()*
Sulphur ()*	Tiemannite ()*	Voltaite ()*	Wollastonite ()*

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
Acanthite ()*	Acanthite	Ag₂S			1	164998	2793
Alunogen ()*	Not in a structural group	Al₂(SO₄)₃(H₂O)₁₂·5H₂O			1	164952	272
Ammonioalunite ()*	Alunite	(NH₄)Al₃(SO₄)₂(OH)₆			1	164952	11
Aragonite ()*	Aragonite	Ca(CO₃)			1	164952	3250
Arsenopyrite ()*	Arsenopyrite	FeAsS			3	164952,164956,164998	9052
Baryte ()*	Baryte	Ba(SO₄)			2	164952,165086	11547
Botryogen ()*	Botryogen	MgFe³⁺(SO₄)₂(OH)·7H₂O			2	164956,164998	45
Buddingtonite ()*	Feldspar	(NH₄)(AlSi₃)O₈			1	164952	27
Calcite ()*	Calcite	Ca(CO₃)			3	164952,165033,165039	27770
Calomel ()*	None	HgCl			2	164956,165040	91
Chalcocite ()*	None	Cu₂S			1	164932	5707
Chlorargyrite ()*	Rocksalt	AgCl			1	164998	1382
Chromite ()*	Spinel	Fe²⁺Cr₂O₄	164	164	38	164935,164937,164938,164939,164941,164942,164943,164944,164945,164950,164953,164954,164956,164957,164961,164962,164963,164976,164981,165003,165027,165028,165029,165031,165032,165045,165048,165059,165061,165065,165069,165070,165071,165072,165073,165097,165109,165124	3902
Chrysotile ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄			2	165122,165123	951
Cinnabar ()*	None	HgS			29	164949,164952,164955,164956,164993,164994,164995,165002,165003,165009,165010,165012,165013,165026,165030,165033,165036,165039,165040,165041,165055,165056,165066,165079,165086,165088,165091,165103,165106	2600
Copiapite ()*	Copiapite	Fe²⁺Fe³⁺₄(SO₄)₆(OH)₂·20H₂O			1	164956	382
Copper ()*	Copper	Cu			2	165022,165098	3846
Coquimbite ()*	Coquimbite	AlFe₃(SO₄)₆(H₂O)₁₂·6H₂O			2	164956,165002	136
Covellite ()*	Covellite	CuS			1	164932	4165
Crednerite ()*	None	CuMnO₂			2	164991,165008	35
Cristobalite ()*	Cristobalite	SiO₂			1	165079	453
Cuprite ()*	Not in a structural group	Cu₂O			1	165022	2970
Dolomite ()*	None	CaMg(CO₃)₂			2	164980,165002	9895
Epsomite ()*	Epsomite	Mg(SO₄)·7H₂O			2	164956,165040	484
Erythrite ()*	Vivianite	Co₃(AsO₄)₂·8H₂O			1	164929	814
Fibroferrite ()*	Not in a structural group	Fe³⁺(SO₄)(OH)·5H₂O			2	164956,164991	107
Galena ()*	Rocksalt	PbS			1	164998	24243
Gold ()*	Copper	Au			2	164952,164998	30554
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O			1	164998	6890
Hematite ()*	Corundum	Fe₂O₃			1	165018	14640
Hohmannite ()*	Amarantite	Fe³⁺₂O(SO₄)₂·8H₂O			1	164956	10
Hydromagnesite ()*	None	Mg₅(CO₃)₄(OH)₂·4H₂O			1	165104	341
Idrialite ()*	None	C₂₂H₁₄			1	164956	15
Jamesonite ()*	None	Pb₄FeSb₆S₁₄			1	164952	784
Kalinite ()*	None	KAl(SO₄)₂·11H₂O			1	164986	54
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄			4	164952,165012,165039,165040	5591
Kornelite ()*	Not in a structural group	Fe³⁺₂(SO₄)₃·7H₂O (?)	164	4	0		21
Magnesiochromite ()*	Spinel	MgCr₂O₄			1	165081	311
Magnesiocopiapite ()*	Copiapite	MgFe³⁺₄(SO₄)₆(OH)₂·20H₂O			1	164956	54
Magnesite ()*	Calcite	Mg(CO₃)			10	164956,165082,165110,165112,165115,165116,165117,165120,165121,165129	1487
Marcasite ()*	Marcasite	FeS₂			4	164952,164956,164998,165002	5674
Melanophlogite ()*	None	C₂H₁₇O₅·Si₄₆O₉₂			1	164980	38
Melanterite ()*	Melanterite	Fe(SO₄)·7H₂O			4	164952,164956,164998,165002	915
Mendozite ()*	None	NaAl(SO₄)₂·11H₂O			1	165141	28
Mercury ()*	None	Hg			8	164952,165002,165011,165026,165040,165086,165088,165105	397
Metacinnabar ()*	Sphalerite	HgS			5	164952,164956,165002,165026,165040	255
Miargyrite ()*	None	AgSbS₂			1	164952	300
Millerite ()*	Millerite	NiS			6	164929,164949,165003,165026,165040,165066	1066
Mirabilite ()*	None	Na₂(SO₄)·10H₂O			1	164956	223
Montmorillonite ()*	Clay Smectite-vermiculite	(Na,Ca)_0.3(Al,Mg)₂Si₄O₁₀(OH)₂·nH₂O			1	164952	1508
Montroydite ()*	None	HgO			1	164952	29
Morenosite ()*	Epsomite	Ni(SO₄)·7H₂O			1	165066	84
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂			1	164952	17380
Opal ()*	Amorphous	SiO₂·nH₂O			10	164934,164948,164952,164956,164995,165002,165010,165013,165087,165131	2994
Prehnite ()*	Prehnite	Ca₂Al(Si₃Al)O₁₀(OH)₂			1	164969	1898
Proustite ()*	None	Ag₃AsS₃			1	164998	733
Pyrargyrite ()*	None	Ag₃SbS₃			3	164952,164993,164998	1425
Pyrite ()*	Pyrite	FeS₂			10	164952,165002,165012,165026,165033,165039,165040,165066,165086,165088	39462
Pyrolusite ()*	Rutile	MnO₂			2	164952,164956	3106
Quartz ()*	Quartz	SiO₂			12	164931,164942,164952,164956,164980,164988,164998,165033,165039,165086,165088,165105	61156
Redingtonite ()*	Halotrichite	Fe²⁺Cr₂(SO₄)₄·22H₂O			1	164956	2
Rhodochrosite ()*	Calcite	Mn(CO₃)			1	165010	1711
Römerite ()*	Römerite	Fe²⁺Fe³⁺₂(SO₄)₄·14H₂O			1	165002	115
Rozenite ()*	Starkeyite	Fe²⁺(SO₄)·4H₂O			1	165002	293
Saponite ()*	Clay Smectite-vermiculite	(Ca,Na)_0.3(Mg,Fe)₃(Si,Al)₄O₁₀(OH)₂·4H₂O			1	165003	301
Senarmontite ()*	Arsenolite	Sb₂O₃			1	164952	179
Siderite ()*	Calcite	Fe(CO₃)			1	164956	6417
Silver ()*	Copper	Ag			1	164998	5186
Skutterudite ()*	Skutterudite Perovskite	CoAs₃			1	164929	531
Stibnite ()*	Stibnite	Sb₂S₃			2	164952,164956	3418
Sulphur ()*	Sulphur	S			2	164956,165040	2045
Tiemannite ()*	Sphalerite	HgSe			1	164994	83
Voltaite ()*	Voltaite	K₂Fe²⁺₅Fe³⁺₃Al(SO₄)₁₂·18H₂O			1	164956	111
Wollastonite ()*	Wollastonite	CaSiO₃			1	165095	1247

11 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Sample Num	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference ID
podchrome-00334	164	164	Middle Jurassic (161-168 Ma)		Cr	83721	Turner Mine, Knoxville Area, Napa Co., California, USA	Turner	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00330	164	164	Middle Jurassic (161-168 Ma)		Cr	83666	Grey Claim (Grey Mine), Knoxville, Knoxville District, Napa Co., California, USA	Grey Claim	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00331	164	164	Middle Jurassic (161-168 Ma)		Cr	83684	Moore Mine (Marshall And Vanderbilt Claims), Knoxville, Knoxville District, Napa Co., California, USA	Moore (Vanderbilt Claim)	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00332	164	164	Middle Jurassic (161-168 Ma)		Cr	83684	Moore Mine (Marshall And Vanderbilt Claims), Knoxville, Knoxville District, Napa Co., California, USA	Moore (Marshall Claim)	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00333	164	164	Middle Jurassic (161-168 Ma)		Cr	83687	Mullaly Mine, Knoxville, Knoxville District, Napa Co., California, USA	Mullaly	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00339	164	164	Middle Jurassic (161-168 Ma)		Cr	83705	Reeve Claims, Angwin, Calistoga District (Silverado District), Mayacmas Mts (Mayacamas Mts), Napa Co., California, USA	Reeve Claims	Moiser et al. (2012)	USGSSIR2012_5157
NAVDAT-29545	8	6	7±1	29545		83662	Glass Mountain Deposit, St. Helena, Calistoga District (Silverado District), Mayacmas Mts (Mayacamas Mts), Napa Co., California, USA		NAVDAT	NAVDAT
NAVDAT-29606	8	4	6±2	29606		83662	Glass Mountain Deposit, St. Helena, Calistoga District (Silverado District), Mayacmas Mts (Mayacamas Mts), Napa Co., California, USA		NAVDAT	NAVDAT
podchrome-00335	164	164	Middle Jurassic (161-168 Ma)		Cr	83637	Astute Mine, Aetna Springs, East Mayacmas District, Mayacmas Mts (Mayacamas Mts), Napa Co., California, USA	Astute	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00337	164	164	Middle Jurassic (161-168 Ma)		Cr	83656	Elder Claim, Pope Valley, East Mayacmas District, Mayacmas Mts (Mayacamas Mts), Napa Co., California, USA	Elder Claim	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00338	164	164	Middle Jurassic (161-168 Ma)		Cr	83636	Antone Nichelini Mine (Nichelini Mine), Spanish Flat, Napa Co., California, USA	Nichelini	Moiser et al. (2012)	USGSSIR2012_5157

Sample	Source Locality	Reference URL
R070581	Redington Mine (Boston Mine; Knoxville Mine; Excellsior Mine), Knoxville, Knoxville District, Napa Co., California, USA	https://rruff.info/R070581

All locality data graciously provided by mindat.org

All age data...