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:
Marin Co., California, USA

mindat Locality ID: 24326
mindat URL: http://www.mindat.org/loc-24326.html

Tectonic Settings:

Total number of sublocalities beneath "Marin Co., California, USA": 127
Total number of bottom-level sublocalities: 87

Number of Child Localities: 34
Child Localities:
Angel Island State Park
Antonio Mountain
Bivalve
Black Mountain
Black Point
Bolinas
Burdell Ranch
Drakes Bay
Fallon
Five Brooks
Fort Baker
Fort Barry
Greenbrae
Larkspur
Marin City
Marshall
Millerton
Mount Tamalpais
Nicasio
Novato
Olema
Petaluma Area
Point Reyes Cape
Red Hill
Rodeo Beach
San Geronimo
San Rafael
Santa Venetia
Sausalito
Shafter
Stinson Beach
Tiburon Peninsula
Vonsen Ranch
Waldo Grade Area

Latitude: 38°0'15"N
Longitude: 122°38'35"W
Decimal Degree (lat, lon): 38.004166666667,-122.64305555556

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.

Alunite	Amorphous	Amphibole	Aragonite	Arsenopyrite	Axinite	Baryte	Calcite	Chalcopyrite	Chlorite
Clay	Clinozoisite	Copper	Corundum	Epidote	Epsomite	Feldspar	Gadolinite	Garnet	Gypsum
Kaolinite	Lawsonite	Malachite	Marcasite	Mica	Millerite	Nickeline	None	Not in a structural group	Prehnite
Pyrite	Pyrophyllite	Pyroxene	Quartz	Rocksalt	Rutile	Scheelite	Serpentine	Sphalerite	Spinel
Stilpnomelane	Talc	Titanite	Tridymite	Vivianite	Wollastonite	Zircon

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 Ba C Ca Co Cr Cu Fe H Hg K Li Mg Mn Na Nd Ni O P Pb S Si Sr Ti W Y Zn Zr

Elements from minerals reported directly at this locality: Ag Al As B Ba C Ca Co Cu Fe H Hg K Mg Mn Na Ni O S Si

Structural Groups for minerals in this locality:
Alunite Amorphous Amphibole Aragonite Arsenopyrite Axinite Baryte Calcite Chalcopyrite Chlorite
Clay Clinozoisite Copper Corundum Epidote Epsomite Feldspar Gadolinite Garnet Gypsum
Kaolinite Lawsonite Malachite Marcasite Mica Millerite Nickeline None Not in a structural group Prehnite
Pyrite Pyrophyllite Pyroxene Quartz Rocksalt Rutile Scheelite Serpentine Sphalerite Spinel
Stilpnomelane Talc Titanite Tridymite Vivianite Wollastonite Zircon

79 IMA Minerals at location:

Actinolite ()*	Albite ()*	Almandine ()*	Alunogen ()*	Ankerite ()*
Antigorite ()*	Aragonite ()*	Arsenopyrite ()*	Axinite-(Fe) ()*	Azurite ()*
Baryte ()*	Calcite ()*	Chalcopyrite ()*	Chromite ()*	Chrysotile ()*
Churchite-(Y) ()*	Cinnabar ()*	Clinochlore ()*	Clinozoisite ()*	Cuprite ()*
Datolite ()*	Diopside ()*	Dolomite ()*	Epidote ()*	Epsomite ()*
Erythrite ()*	Florencite-(Nd) ()*	Galena ()*	Glaucophane ()*	Gold ()*
Graphite ()*	Gypsum ()*	Hematite ()*	Hydromagnesite ()*	Jadeite ()*
Jarosite ()*	Kaolinite ()*	Kyanite ()*	Laumontite ()*	Lawsonite ()*
Lithiophorite ()*	Lizardite ()*	Magnesite ()*	Magnetite ()*	Malachite ()*
Manganite ()*	Marcasite ()*	Mercury ()*	Microcline ()*	Millerite ()*
Muscovite ()*	Omphacite ()*	Opal ()*	Orthoclase ()*	Paragonite ()*
Plumbojarosite ()*	Prehnite ()*	Pyrite ()*	Pyrolusite ()*	Pyrophyllite ()*
Pyrrhotite ()*	Quartz ()*	Rhodochrosite ()*	Riebeckite ()*	Rutile ()*
Scheelite ()*	Siderite ()*	Silver ()*	Sphalerite ()*	Stilpnomelane ()*
Szaibélyite ()*	Talc ()*	Titanite ()*	Todorokite ()*	Tremolite ()*
Tridymite ()*	Wollastonite ()*	Zircon ()*	Zoisite ()*

Mineral name	Structural Groups	IMA Formula	# 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	3	162509,162521,162526	3419
Albite ()*	Feldspar	Na(AlSi₃O₈)	2	162521,162526	8803
Almandine ()*	Garnet	Fe²⁺₃Al₂(SiO₄)₃	1	162526	2353
Alunogen ()*	Not in a structural group	Al₂(SO₄)₃(H₂O)₁₂·5H₂O	1	162433	272
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	0		3092
Antigorite ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄	0		708
Aragonite ()*	Aragonite	Ca(CO₃)	1	162526	3250
Arsenopyrite ()*	Arsenopyrite	FeAsS	0		9052
Axinite-(Fe) ()*	Axinite	Ca₄Fe²⁺₂Al₄[B₂Si₈O₃₀](OH)₂	1	162517	260
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂	0		5509
Baryte ()*	Baryte	Ba(SO₄)	0		11547
Calcite ()*	Calcite	Ca(CO₃)	3	162420,162488,162519	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	3	162417,162426,162519	27198
Chromite ()*	Spinel	Fe²⁺Cr₂O₄	1	162497	3902
Chrysotile ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄	0		951
Churchite-(Y) ()*	Gypsum	Y(PO₄)·2H₂O	1	162512	70
Cinnabar ()*	None	HgS	4	162444,162448,162457,162460	2600
Clinochlore ()*	Chlorite Clay	Mg₅Al(AlSi₃O₁₀)(OH)₈	1	162526	1756
Clinozoisite ()*	Clinozoisite Epidote	Ca₂Al₃[Si₂O₇][SiO₄]O(OH)	0		1025
Cuprite ()*	Not in a structural group	Cu₂O	0		2970
Datolite ()*	Gadolinite	CaB(SiO₄)(OH)	0		498
Diopside ()*	Pyroxene	CaMgSi₂O₆	0		4135
Dolomite ()*	None	CaMg(CO₃)₂	0		9895
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	2	162526,162527	8173
Epsomite ()*	Epsomite	Mg(SO₄)·7H₂O	0		484
Erythrite ()*	Vivianite	Co₃(AsO₄)₂·8H₂O	0		814
Florencite-(Nd) ()*	Alunite	NdAl₃(PO₄)₂(OH)₆	1	162512	6
Galena ()*	Rocksalt	PbS	2	162419,162519	24243
Glaucophane ()*	Amphibole	Na₂(Mg₃Al₂)Si₈O₂₂(OH)₂	6	162404,162452,162522,162526,162527,162528	286
Gold ()*	Copper	Au	2	162425,162487	30554
Graphite ()*	None	C	1	162488	2812
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	1	162433	6890
Hematite ()*	Corundum	Fe₂O₃	0		14640
Hydromagnesite ()*	None	Mg₅(CO₃)₄(OH)₂·4H₂O	1	162418	341
Jadeite ()*	Pyroxene	NaAlSi₂O₆	3	162404,162491,162526	154
Jarosite ()*	Alunite	KFe³⁺₃(SO₄)₂(OH)₆	1	162421	2228
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	0		5591
Kyanite ()*	Not in a structural group	Al₂OSiO₄	1	162526	1507
Laumontite ()*	Not in a structural group	CaAl₂Si₄O₁₂·4H₂O	0		1271
Lawsonite ()*	Lawsonite	CaAl₂(Si₂O₇)(OH)₂·H₂O	3	162404,162463,162526	121
Lithiophorite ()*	None	(Al,Li)(Mn⁴⁺,Mn³⁺)O₂(OH)₂	1	162512	210
Lizardite ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄	0		359
Magnesite ()*	Calcite	Mg(CO₃)	0		1487
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	0		14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	0		12537
Manganite ()*	Rutile	Mn³⁺O(OH)	0		770
Marcasite ()*	Marcasite	FeS₂	1	162444	5674
Mercury ()*	None	Hg	0		397
Microcline ()*	Feldspar	K(AlSi₃O₈)	0		4924
Millerite ()*	Millerite	NiS	0		1066
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	2	162521,162526	17380
Omphacite ()*	Pyroxene	(Ca,Na)(Mg,Fe,Al)Si₂O₆	1	162526	229
Opal ()*	Amorphous	SiO₂·nH₂O	0		2994
Orthoclase ()*	Feldspar	K(AlSi₃O₈)	0		2349
Paragonite ()*	Mica Clay	NaAl₂(Si₃Al)O₁₀(OH)₂	1	162526	247
Plumbojarosite ()*	Alunite	Pb_0.5Fe³⁺₃(SO₄)₂(OH)₆	1	162419	477
Prehnite ()*	Prehnite	Ca₂Al(Si₃Al)O₁₀(OH)₂	3	162411,162517,162529	1898
Pyrite ()*	Pyrite	FeS₂	8	162417,162419,162426,162436,162444,162460,162519,162520	39462
Pyrolusite ()*	Rutile	MnO₂	2	162429,162514	3106
Pyrophyllite ()*	Clay Pyrophyllite	Al₂Si₄O₁₀(OH)₂	0		771
Pyrrhotite ()*	Nickeline	Fe₇S₈	1	162449	9056
Quartz ()*	Quartz	SiO₂	8	162414,162415,162426,162450,162460,162495,162498,162513	61156
Rhodochrosite ()*	Calcite	Mn(CO₃)	1	162460	1711
Riebeckite ()*	Amphibole	Na₂(Fe²⁺₃Fe³⁺₂)Si₈O₂₂(OH)₂	0		375
Rutile ()*	Rutile	TiO₂	3	162472,162522,162526	5614
Scheelite ()*	Scheelite	Ca(WO₄)	3	162481,162482,162484	4894
Siderite ()*	Calcite	Fe(CO₃)	0		6417
Silver ()*	Copper	Ag	0		5186
Sphalerite ()*	Sphalerite	ZnS	1	162419	21482
Stilpnomelane ()*	Stilpnomelane Clay	(K,Ca,Na)(Fe,Mg,Al)₈(Si,Al)₁₂(O,OH)₃₆·nH₂O	1	162521	456
Szaibélyite ()*	None	MgBO₂(OH)	1	162517	87
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂	2	162509,162526	3337
Titanite ()*	Titanite	CaTi(SiO₄)O	1	162526	4899
Todorokite ()*	None	(Na,Ca,K,Ba,Sr)_1-x(Mn,Mg,Al)₆O₁₂·3-4H₂O	1	162512	433
Tremolite ()*	Amphibole	Ca₂(Mg_5.0-4.5Fe²⁺_0.0-0.5)Si₈O₂₂(OH)₂	1	162488	2562
Tridymite ()*	Tridymite	SiO₂	1	162472	458
Wollastonite ()*	Wollastonite	CaSiO₃	1	162488	1247
Zircon ()*	Zircon	Zr(SiO₄)	1	162472	5251
Zoisite ()*	Epidote	Ca₂Al₃[Si₂O₇][SiO₄]O(OH)	1	162521	1025

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL
X050112	Marin Co., California, USA	https://rruff.info/X050112
R070083	Sausalito Road Quarry, Sausalito, Marin Co., California, USA	https://rruff.info/R070083
R070498	Stinson Beach, Marin Co., California, USA	https://rruff.info/R070498

All locality data graciously provided by mindat.org

All age data...