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Symmes Pond Syenite, Straw Hill, Newfield, York Co., Maine, USA

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Syenite Pluton immediately northwest of Newfield village. Probably mapped by Gilman (1978) on the north or northeast margin of a syenite on Straw Hill 1 km north west of Newfield village along the western side of Elm Street. Sillimanite in the Rindgemere Formation. Locality marker is approximate as the syenite outcrops over the entire Straw Hill. Sunstone, sodalite, and pyrophanite were found at a home construction site about 1955.





 Map Reference: 43°39'40"N , 70°51'50"W

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Mineral List:
  		•  Aegirine-augite
    (Na,Ca)(Fe
    3+
     
    		,Fe
    2+
     
    		,Mg,Al)Si
     
    2
    		O
     
    6
    Reference: [Gilman, R., 1978, Bedrock Gepology of the Newfield 15' Quadrangle, Maine, ME Geol Surv OF-78-10.]
  		•  Albite
    Na[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [Gilman, R., 1978, Bedrock Gepology of the Newfield 15' Quadrangle, Maine, ME Geol Surv OF-78-10.]
  		•  Fayalite
    Fe
    2+
    2
    		[SiO
     
    4
    		]
    Reference: [Gilman, R., 1978, Bedrock Gepology of the Newfield 15' Quadrangle, Maine, ME Geol Surv OF-78-10.]
  		•  Microcline
    K[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [Gilman, R., 1978, Bedrock Gepology of the Newfield 15' Quadrangle, Maine, ME Geol Surv OF-78-10.]
  		•  Microcline
    var: Sunstone
    Reference: [King, V. and Foord, E., 1994, 2000, Mineralogy of Maine, volume 1 and 2, with updates by Van King.]
    Site Photo
    Symmes Pond Syenite, Straw Hill, Newfield, York Co., Maine, USA
    © Van King
  		•  Molybdenite
    MoS
     
    2
    Reference: [Gilman, R., 1978, Bedrock Gepology of the Newfield 15' Quadrangle, Maine, ME Geol Surv OF-78-10.]
  		•  Pyrophanite
    Mn
    2+
     
    		TiO
     
    3
    Reference: [King, V. and Foord, E., 1994, 2000, Mineralogy of Maine, volume 1 and 2, with updates by Van King.]
    Site Photo
    Symmes Pond Syenite, Straw Hill, Newfield, York Co., Maine, USA
    © Van King
  		•  Sillimanite
    Al
     
    2
    		[O|SiO
     
    4
    		]
    Reference: [Gilman, R., 1978, Bedrock Gepology of the Newfield 15' Quadrangle, Maine, ME Geol Surv OF-78-10.]
  		•  Sodalite
    Na
     
    8
    		[Cl
     
    2
    		|Al
     
    6
    		Si
     
    6
    		O
     
    24
    		]
    Reference: [King, V. and Foord, E., 1994, 2000, Mineralogy of Maine, volume 1 and 2, with updates by Van King.]
    Site Photo
    Symmes Pond Syenite, Straw Hill, Newfield, York Co., Maine, USA
    © Van King


    9 entries listed. 8 valid minerals.

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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Jobs in Maine, 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 17:10:28