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Cummingtonite Type Locality, Cummington, Hampshire Co., Massachusetts, USA

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Ledges in an area south of Rt. 9 in West Cummington?





Mineral List:
  		•  Alleghanyite
    Mn
    2+
    5
    		[(OH)
     
    2
    		|(SiO
     
    4
    		)
     
    2
    		]
    Reference: [Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 58]
  		•  Birnessite
    (Na,Ca)
     
    0.5
    		(Mn
    4+
     
    		,Mn
    3+
     
    		)
     
    2
    		O
     
    4
    		 · 1.5H
     
    2
    		O
    Reference: [Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 58]
  		•  Cummingtonite (TL)
    [ ][Mg
     
    2
    		][Mg
     
    5
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
    Type Locality: Cummingtonite Type Locality, Cummington, Hampshire Co., Massachusetts, USA
    Reference: [Dewey (1824); Am. Min.:63:1023 (1978); Am. Min.:74:1091 (1989).]
    Site Photo
    Cummingtonite Type Locality, Cummington, Hampshire Co., Massachusetts, USA
    © Charles Creekmur
  		•  Rhodochrosite
    MnCO
     
    3
    Reference: [Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 58]
  		•  Rhodonite
    MnSiO
     
    3
    Reference: [Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 58]
  		•  Spessartine
    Mn
    2+
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    Reference: [Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 58]
  		•  Tephroite
    Mn
    2+
    2
    		[SiO
     
    4
    		]
    Reference: [Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 58]


    7 entries listed. 7 valid minerals. 1 type locality (valid mineral).

    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 Massachusetts, 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: 26th Nov 2009 14:15:10