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Marin Co., California, USA

StandardDetailedBy ChemistryMineral Photos (11)Site Photos (1)Search GoogleMineral Report for Region

Mineral list contains entries from the region specified including sub-localities


Mineral List:
  		•  Actinolite
    ☐Ca
     
    2
    		(Mg,Fe
    2+
     
    		)
     
    5
    		(Si
     
    8
    		O
     
    22
    		)(OH)
     
    2
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Actinolite
    var: Nephrite
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Actinolite
    var: Smaragdite
    Ca
     
    2
    		(Mg,Fe
    2+
     
    		)
     
    5
    		Si
     
    8
    		O
     
    22
    		(OH)
     
    2
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  'Adularia'
    KAlSi
     
    3
    		O
     
    8
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Albite
    Na[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Almandine
    Fe
    2+
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Alunogen
    Al
     
    2
    		(SO
     
    4
    		)
     
    3
    		·17H
     
    2
    		O
    Habit: Fibrous
    Description: Occurs as tufts with gypsum.
    Reference: [Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 62.]
  		•  Ankerite
    Ca(Fe
    2+
     
    		 ,Mg,Mn
    2+
     
    		)(CO
     
    3
    		)
     
    2
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Antigorite
    (Mg,Fe
    2+
     
    		)
     
    3
    		[(OH)
     
    4
    		|Si
     
    2
    		O
     
    5
    		]
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  'Apatite'
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  'Apatite
    var: Collophane'
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  'Apophyllite'
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Aragonite
    CaCO
     
    3
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Arsenopyrite
    FeAsS - (Fe
     
    0.90
    		Co
     
    0.10
    		)AsS
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  'Asphaltum'
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  'Axinite'
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Axinite-(Fe)
    Ca
     
    2
    		Fe
    2+
     
    		Al
     
    2
    		[OH|BSi
     
    4
    		O
     
    15
    		]
    Reference: [www.mineralsocal.org]
  		•  Azurite
    Cu
     
    3
    		[OH|CO
     
    3
    		]
     
    2
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Baryte
    BaSO
     
    4
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Biotite
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Calcite
    CaCO
     
    3
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Calcite
    var: Manganoan Calcite
    (Ca,Mn)CO
     
    3
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  'Chalcedony'
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  'Chalcedony
    var: Agate'
    SiO
     
    2
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  'Chalcedony
    var: Carnelian'
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  'Chalcedony
    var: Sard'
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Chalcopyrite
    CuFeS
     
    2
    Reference: [U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.]
  		•  'Chlorite Group'
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Chromite
    FeCr
     
    2
    		O
     
    4
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Chrysotile
    Mg
     
    3
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Churchite-(Y)
    YPO
     
    4
    		·2H
     
    2
    		O
    Reference: []
  		•  Cinnabar
    HgS
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Clinochlore
    (Mg,Fe
    2+
     
    		)
     
    5
    		Al[(OH)
     
    8
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Clinozoisite
    {Ca
     
    2
    		}{Al
     
    3
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  'Coal'
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Cuprite
    Cu
     
    2
    		O
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Datolite
    CaB[OH|SiO
     
    4
    		]
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  'Diallage'
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Diopside
    CaMg[Si
     
    2
    		O
     
    6
    		]
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Dolomite
    CaMg(CO
     
    3
    		)
     
    2
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Epidote
    {Ca
     
    2
    		}{Al
     
    2
    		Fe
    3+
     
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Epsomite
    MgSO
     
    4
    		·7H
     
    2
    		O
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Erythrite
    Co
     
    3
    		(AsO
     
    4
    		)
     
    2
    		·8H
     
    2
    		O
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Florencite-(Nd) (TL)
    NdAl
     
    3
    		[(OH)
     
    6
    		|(PO
     
    4
    		)
     
    2
    		]
    Type Locality: North side of lateral to highway 101 roadcut, Sausalito, Marin Co., California, USA
    Colour: Brown
    Description: Occurs as brown, pulverulent and earthy material.
    Reference: [Milton, D.J. and Bastron, H. (1971). "Churchite and Florencite (Nd) from Sausalito, California." Mineralogical Record: 2(4): 166-168.]
  		•  Galena
    PbS
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Glauconite
    K
     
    0.08
    		R
    1
    1.33
    		 R
    2
    0.67
    		 [][Al
     
    0.13
    		Si
     
    3.87
    		O
     
    10
    		](OH)
     
    2
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Glaucophane
    [ ][Na
     
    2
    		][Mg
     
    3
    		Al
     
    2
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
    Description: Occurs as glaucophane schist.
    Reference: [Ransome, Frederick Leslie (1895), On lawsonite, a new rock-forming mineral from the Tiburon Peninsula, Marin County: University of Calif., Dept. Geol. Sci. Bulletin: 1: 311; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 69; Papike, J.J. and Clark, J.R. (1968a) Cation distribution in the crystal structure of glaucophane; II: the high pressure polymorph. Geological Society of America Abstract, 1966: 157; Papike, J.J. and Clark, J.R. (1968b) The crystal structure and cation distribution of glaucophane. American Mineralogist: 53: 1156; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 403; American Mineralogist (1969): 54: 1139-1150.]
    Site Photo
    Vonsen Ranch, Marin Co., California, USA
    © 2007 Peter Cristofono
  		•  Gold
    Au
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Gypsum
    Ca[SO
     
    4
    		] · 2H
     
    2
    		O
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Gypsum
    var: Selenite
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Hematite
    Fe
     
    2
    		O
     
    3
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  'Heulandite'
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  'Hornblende'
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Hydromagnesite
    Mg
     
    5
    		[(CO
     
    3
    		)
     
    4
    		(OH)
     
    2
    		] · 4H
     
    2
    		O
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Jadeite
    Na(Al,Fe
    3+
     
    		)[Si
     
    2
    		O
     
    6
    		]
    Reference: [Amer.Min.(1969) 54, 1139-1150]
  		•  Jarosite
    KFe
    3+
     
     
    3
    		[(OH)
     
    3
    		|SO
     
    4
    		]
     
    2
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Kaolinite
    Al
     
    2
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Kyanite
    Al
     
    2
    		[O|SiO
     
    4
    		]
    Reference: [Amer.Min.(1969) 54, 1139-1150]
  		•  Laumontite
    CaAl
     
    2
    		Si
     
    4
    		O
     
    12
    		·4H
     
    2
    		O
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Lawsonite (TL)
    CaAl
     
    2
    		[(OH)
     
    2
    		|Si
     
    2
    		O
     
    7
    		] · H
     
    2
    		O
    Type Locality: Reed Station, Tiburon Peninsula, Marin Co., California, USA
    Description: Occurs in schists.
    Reference: [Ransome, Frederick Leslie (1895), On lawsonite, a new rock-forming mineral from the Tiburon Peninsula, Marin County: University of California, Department of Geological Science Bull.: 1: 301-312; American Mineralogist (1969) 54, 1139-1150; Papike, J.J. and Clark, J.R. (1968a) Cation distribution in the crystal structure of glaucophane; II: the high pressure polymorph. Geological Society of America Abstract, 1966: 157; Klein, C. (1969) Two-amphibole assemblages in the system actinolite-hornblende-glaucophane. American Mineralogist: 54: 212-237.]
    Site Photo
    Reed Station, Tiburon Peninsula, Marin Co., California, USA
    © Caltech
  		•  Limonite
    FeO(OH)·nH
     
    2
    		O
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Lithiophorite
    (Al,Li)MnO
     
    2
    		(OH)
     
    2
    Reference: []
  		•  Lizardite
    Mg
     
    3
    		[(OH)
     
    4
    		|Si
     
    2
    		O
     
    5
    		]
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Magnesite
    MgCO
     
    3
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Magnetite
    Fe
    2+
     
    		Fe
    3+
    2
    		O
     
    4
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Malachite
    Cu
     
    2
    		[(OH)
     
    2
    		|CO
     
    3
    		]
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Manganite
    Mn
    3+
     
    		O(OH)
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Marcasite
    FeS
     
    2
    Reference: [U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.]
  		•  Mercury
    Hg
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Microcline
    K[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Millerite
    NiS
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Muscovite
    KAl
     
    2
    		[(OH)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  'Olivine'
    (Mg,Fe
    2+
     
    		)
     
    2
    		[SiO
     
    4
    		]
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Omphacite
    (Ca,Na)(Mg,Al)[Si
     
    2
    		O
     
    6
    		]
    Reference: []
  		•  Opal
    SiO
     
    2
    		·nH
     
    2
    		O
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Opal
    var: Opal-AN
    SiO
     
    2
    		·nH
     
    2
    		O
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Orthoclase
    K[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Paragonite
    NaAl
     
    2
    		[(OH)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [Amer.Min.(1969) 54, 1139-1150]
  		•  Prehnite
    Ca
     
    2
    		Al
     
    2
    		Si
     
    3
    		O
     
    12
    		(OH)
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  'Psilomelane'
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  'Pumpellyite'
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Pyrite
    FeS
     
    2
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Pyrolusite
    MnO
     
    2
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Pyrophyllite
    Al
     
    2
    		Si
     
    4
    		O
     
    10
    		(OH)
     
    2
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  'Pyroxene Group'
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Pyrrhotite
    Fe
     
    7
    		S
     
    8
    		, (-4M), also given as Fe
     
    1-x
    		S (x = 0 - 0.2)
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Quartz
    SiO
     
    2
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Quartz
    var: Citrine
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Quartz
    var: Jasper
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Quartz
    var: Prase
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Quartz
    var: Rock Crystal
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Quartz
    var: Smoky Quartz
    SiO
     
    2
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Rhodochrosite
    MnCO
     
    3
    Colour: Gray, pink
    Reference: [Trask, Parker Davies (1950) Geologic description of the manganese deposits of California. California Division of Mines Bulletin 152, 378 pp.: 106; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 213.]
  		•  Riebeckite
    [ ][Na
     
    2
    		][Fe
    2+
    3
    		Fe
    3+
    2
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Riebeckite
    var: Crocidolite
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Rutile
    TiO
     
    2
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Scheelite
    Ca[WO
     
    4
    		]
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  'Serpentine Group'
    D
     
    2
    		[Si
     
    2
    		O
     
    5
    		](OH)4 + or - nH
     
    2
    		O
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Siderite
    FeCO
     
    3
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Silver
    Ag
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Stilpnomelane
    (K,Ca,Na)(Fe
    2+
     
    		,Mg,Al,Fe
    3+
     
    		)
     
    8
    		(Si,Al)
     
    12
    		(O,OH)
     
    36
    		 · nH
     
    2
    		O
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Szaibélyite
    Mg
     
    2
    		[(OH)(B
     
    2
    		O
     
    4
    		(OH))]
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
    Site Photo
    Stinson Beach, Marin Co., California, USA
    © Leon Hupperichs
  		•  Talc
    Mg
     
    3
    		Si
     
    4
    		O
     
    10
    		(OH)
     
    2
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Titanite
    CaTi[O|SiO
     
    4
    		]
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Todorokite
    (Ca,K,Na,Mg,Ba,Mn)(Mn,Mg,Al)
     
    6
    		O
     
    12
    		·3H
     
    2
    		O
    Reference: []
  		•  'Tourmaline'
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Tremolite
    ☐[Ca
     
    2
    		][Mg
     
    5
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Wollastonite
    Ca[SiO
     
    3
    		]
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Zircon
    Zr[SiO
     
    4
    		]
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]
  		•  Zoisite
    {Ca
     
    2
    		}{Al
     
    3
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    Reference: [Pelletier, 1962. Mineral Species & Localities of Marin County]


    110 entries listed. 76 valid minerals. 2 type localities (valid minerals).

    Localities in this Region:
    USA
     
    • California
      • Marin Co.
        • Fort Barry area
        • Greenbrae
        • Marshall
          • M. Gambonini Ranch
            • Salmon Creek
        • Petaluma
        • Point Reyes peninsula
            • Inverness Ridge
              • Willow Point
        • San Geronimo Township
          • Sausalito Point
        • Union
          • Vonson Ranch
            • Massa Hill

    The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database!
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Jobs in California, USA Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 1st Nov 2009 00:28:09