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Laytonville, Mendocino Co., California, USA

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


Mineral List:
  		•  Aegirine
    NaFe
    3+
     
    		[Si
     
    2
    		O
     
    6
    		]
    Habit: Stumpy, prismatic; aggregates of radiating needles.
    Colour: Yellowish green
    Reference: [Chesterman, C.W. (1966b), Mineralogy of the Laytonville quarry, Mendocino County, California, in: Geology of Northern California: California Division Mines & Geol. Bulletin 190: 506; Onucki, H. and Ernst, W.G. (1969) Coexisting sodic amphiboles and sodic pyroxenes from blueschist facies metamorphic rocks. Mineralogical Association of America Special Paper 2: 245; Pemberton, H. Earl (1983), Minerals of California: 392.]
  		•  Albite
    Na[AlSi
     
    3
    		O
     
    8
    		]
    Reference: []
  		•  'Chlorite Group'
    Reference: [Chesterman, C.W. (1966b), Mineralogy of the Laytonville quarry, Mendocino County, California, in: Geology of Northern California: California Division Mines & Geol. Bulletin 190: 503; Pemberton, H. Earl (1983), Minerals of California: 492.]
  		•  Clinozoisite
    {Ca
     
    2
    		}{Al
     
    3
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    Description: Forms small, thin lenses in metabasalt.
    Reference: [Chesterman, C.W. (1966b), Mineralogy of the Laytonville quarry, Mendocino County, California, in: Geology of Northern California: California Division Mines & Geol. Bulletin 190: 503; Pemberton, H. Earl (1983), Minerals of California: 492.]
  		•  Crossite
    Habit: Prismatic
    Colour: Dark bluish black
    Reference: [Chesterman, C.W. (1966b), Mineralogy of the Laytonville quarry, Mendocino County, California, in: Geology of Northern California: California Division Mines & Geol. Bulletin 190: 503, 506; Pemberton, H. Earl (1983), Minerals of California: 403.]
  		•  Deerite (TL)
    (Fe,Mn)
     
    6
    		(Fe,Al)
     
    3
    		Si
     
    6
    		O
     
    20
    		(OH)
     
    5
    Type Locality: Laytonville quarry, Laytonville, Mendocino Co., California, USA
    Reference: [Agrell, S.O. (1964), Deerite, howieite, and zussmanite, three new minerals from the Franciscan of the Laytonville district, Mendocino County, California (title only), Am. Min.: 49.]
    Site Photo
    Laytonville, Mendocino Co., California, USA
    © Peter Andresen
  		•  Glaucophane
    [ ][Na
     
    2
    		][Mg
     
    3
    		Al
     
    2
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
    Habit: Prismatic
    Description: Occurs as small interlocking prismatic crystals from 0.2 to 1.5mm.
    Reference: [Chesterman, C.W. (1966b), Mineralogy of the Laytonville quarry, Mendocino County, California, in: Geology of Northern California: California Division Mines & Geol. Bulletin 190: 503, 506; Pemberton, H. Earl (1983), Minerals of California: 403.]
  		•  Grunerite
    [ ][Fe
    2+
    2
    		][Fe
    2+
    5
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
    Habit: Fibrous and silky crystals
    Colour: Brown
    Reference: [Chesterman, C.W. (1966b), Mineralogy of the Laytonville quarry, Mendocino County, California, in: Geology of Northern California: California Division Mines & Geol. Bulletin 190: 506; Pemberton, H. Earl (1983), Minerals of California: 395.]
  		•  Howieite (TL)
    Na(Fe,Mn)
     
    10
    		(Fe,Al)
     
    2
    		Si
     
    12
    		O
     
    31
    		(OH)
     
    13
    Type Locality: Laytonville quarry, Laytonville, Mendocino Co., California, USA
    Reference: [Agrell, S.O. (1964), Deerite, howieite, and zussmanite, three new minerals from the Franciscan of the Laytonville district, Mendocino County, California (title only), Am.Min.: 49; CM 28 (1990), 855; HB2/1 (1995)]
    Site Photo
    Laytonville, Mendocino Co., California, USA
    © Martin Patus
  		•  Jadeite
    Na(Al,Fe
    3+
     
    		)[Si
     
    2
    		O
     
    6
    		]
    Reference: [Onucki, H. and Ernst, W.G. (1969) Coexisting sodic amphiboles and sodic pyroxenes from blueschist facies metamorphic rocks. Mineralogical Association of America Special Paper 2: 245; Pemberton, H. Earl (1983), Minerals of California: 390-391.]
  		•  Kutnohorite
    Ca(Mn,Mg,Fe)(CO
     
    3
    		)
     
    2
    Description: Ferroan variety. Occurs as granular material.
    Reference: [Chesterman, C.W. (1966b), Mineralogy of the Laytonville quarry, Mendocino County, California, in: Geology of Northern California: California Division Mines & Geol. Bulletin 190: 506; Pemberton, H. Earl (1983), Minerals of California: 221.]
  		•  Lawsonite
    CaAl
     
    2
    		[(OH)
     
    2
    		|Si
     
    2
    		O
     
    7
    		] · H
     
    2
    		O
    Habit: Prismatic
    Description: Crystals to 1.5 mm in metabasalt.
    Reference: [Chesterman, C.W. (1966b), Mineralogy of the Laytonville quarry, Mendocino County, California, in: Geology of Northern California: California Division Mines & Geol. Bulletin 190: 503; Pemberton, H. Earl (1983), Minerals of California: 487.]
  		•  Magnesioriebeckite
    [ ][Na
     
    2
    		][Mg
     
    3
    		Fe
    3+
    2
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
    Reference: [Onucki, H. and Ernst, W.G. (1969) Coexisting sodic amphiboles and sodic pyroxenes from blueschist facies metamorphic rocks. Mineralogical Association of America Special Paper 2: 244; Pemberton, H. Earl (1983), Minerals of California: 403.]
  		•  Phengite
    Habit: Small, platelike, comprising layers
    Colour: Pale green
    Description: Crystal layers from a few mm's to about 5 cm thick.
    Reference: [Chesterman, C.W. (1966b), Mineralogy of the Laytonville quarry, Mendocino County, California, in: Geology of Northern California: California Division Mines & Geol. Bulletin 190: 503, 506; Pemberton, H. Earl (1983), Minerals of California: 426, 503.]
  		•  Pumpellyite-(Mg)
    Ca
     
    2
    		MgAl
     
    2
    		[(OH)
     
    2
    		|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		] · H
     
    2
    		O
    Reference: [Chesterman, C.W. (1966b), Mineralogy of the Laytonville quarry, Mendocino County, California, in: Geology of Northern California: California Division Mines & Geol. Bulletin 190: 503; Pemberton, H. Earl (1983), Minerals of California: 492.]
  		•  Pyrite
    FeS
     
    2
    Description: Occurs as individual crystals 1 mm to 1,5 cm.
    Reference: [Chesterman, C.W. (1966b), Mineralogy of the Laytonville quarry, Mendocino County, California, in: Geology of Northern California: California Division Mines & Geol. Bulletin 190: 506; Pemberton, H. Earl (1983), Minerals of California: 72.]
  		•  Quartz
    SiO
     
    2
    Reference: []
  		•  Riebeckite
    [ ][Na
     
    2
    		][Fe
    2+
    3
    		Fe
    3+
    2
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
    Habit: Prismatic
    Colour: Bluish black
    Description: Crystals to 1 cm & 2 cm wide.
    Reference: [Chesterman, C.W. (1966b), Mineralogy of the Laytonville quarry, Mendocino County, California, in: Geology of Northern California: California Division Mines & Geol. Bulletin 190: 503, 506; Pemberton, H. Earl (1983), Minerals of California: 403.]
  		•  Siderite
    var: Manganoan Siderite
    (Fe,Mn)CO
     
    3
    Habit: Rhombic
    Description: Occurs as small rhombic crystals.
    Reference: [Chesterman, C.W. (1966b), Mineralogy of the Laytonville quarry, Mendocino County, California, in: Geology of Northern California: California Division Mines & Geol. Bulletin 190: 506; Pemberton, H. Earl (1983), Minerals of California: 212.]
  		•  Spessartine
    Mn
    2+
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    Colour: Orange to orange-red
    Reference: [Chesterman, C.W. (1966b), Mineralogy of the Laytonville quarry, Mendocino County, California, in: Geology of Northern California: California Division Mines & Geol. Bulletin 190: 503; Pemberton, H. Earl (1983), Minerals of California: 496.]
  		•  Stilpnomelane
    (K,Ca,Na)(Fe
    2+
     
    		,Mg,Al,Fe
    3+
     
    		)
     
    8
    		(Si,Al)
     
    12
    		(O,OH)
     
    36
    		 · nH
     
    2
    		O
    Description: Individual crystals from a few mm's to about 1 cm.
    Reference: [Chesterman, C.W. (1966b), Mineralogy of the Laytonville quarry, Mendocino County, California, in: Geology of Northern California: California Division Mines & Geol. Bulletin 190: 506; Rice, S.J. (1966) A new mineral locality. California Division of Mines and Geology Mineral Information Service: 19: 7; Onucki, H. and Ernst, W.G. (1969) Coexisting sodic amphiboles and sodic pyroxenes from blueschist facies metamorphic rocks. Mineralogical Association of America Special Paper 2: 242; Pemberton, H. Earl (1983), Minerals of California: 432.]
  		•  Stilpnomelane
    var: Ferristilpnomelane
    K(Fe
    3+
     
    		,Mg,Fe
    2+
     
    		)
     
    8
    		(Si,Al)
     
    12
    		(O,OH)
     
    27
    Habit: Plumose and interlaminated aggregates.
    Reference: [Chesterman, C.W. (1966b), Mineralogy of the Laytonville quarry, Mendocino County, California, in: Geology of Northern California: California Division Mines & Geol. Bulletin 190: 506; Rice, S.J. (1966) A new mineral locality. California Division of Mines and Geology Mineral Information Service: 19: 7; Onucki, H. and Ernst, W.G. (1969) Coexisting sodic amphiboles and sodic pyroxenes from blueschist facies metamorphic rocks. Mineralogical Association of America Special Paper 2: 242; Pemberton, H. Earl (1983), Minerals of California: 432.]
  		•  Zussmanite (TL)
    K(Fe,Mg,Mn)
     
    13
    		(Si,Al)
     
    18
    		O
     
    42
    		(OH)
     
    14
    Type Locality: Laytonville quarry, Laytonville, Mendocino Co., California, USA
    Reference: [Agrell, S.O. (1964), Deerite, howieite, and zussmanite, three new minerals from the Franciscan of the Laytonville district, Mendocino County, California (title only), Am.Min.: 49; MM 43 (1980), 605; HB2/2 (1995).]
    Site Photo
    Laytonville, Mendocino Co., California, USA
    © Pedro González


    23 entries listed. 18 valid minerals. 3 type localities (valid minerals).

    Localities in this Region:
    USA
     
    • California
      • Mendocino Co.
        • Laytonville

    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: 28th Nov 2009 13:58:50