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Osborne Soapstone quarry, Blandford, Hampden Co., Massachusetts, USA

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Ultramafic tectonic "sliver" thrust fault deposit. (Note: The pegmatite minerals listed are found in small pegmatite sills adjacent to the quarry.)





Mineral List:
  		•  Actinolite
    ☐Ca
     
    2
    		(Mg,Fe
    2+
     
    		)
     
    5
    		(Si
     
    8
    		O
     
    22
    		)(OH)
     
    2
    Reference: ["Western Massachusetts Mineral Localities" by Plante, A.R., Valley Geology Press, 1992]
  		•  Amesite ?
    Mg
     
    2
    		Al[(OH)
     
    4
    		|AlSiO
     
    5
    		]
    Reference: ["Western Massachusetts Mineral Localities" by Plante, A.R., Valley Geology Press, 1992]
  		•  Antigorite ?
    (Mg,Fe
    2+
     
    		)
     
    3
    		[(OH)
     
    4
    		|Si
     
    2
    		O
     
    5
    		]
    Reference: ["Western Massachusetts Mineral Localities" by Plante, A.R., Valley Geology Press, 1992]
  		•  Biotite
    Reference: ["Western Massachusetts Mineral Localities" by Plante, A.R., Valley Geology Press, 1992]
  		•  Calcite ?
    CaCO
     
    3
    Reference: ["Western Massachusetts Mineral Localities" by Plante, A.R., Valley Geology Press, 1992]
  		•  Chamosite ?
    (Fe
    2+
     
    		,Mg)
     
    5
    		Al[(OH)
     
    8
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: ["Western Massachusetts Mineral Localities" by Plante, A.R., Valley Geology Press, 1992]
  		•  Chloritoid ?
    (Fe
    2+
     
    		,Mg,Mn
    2+
     
    		)Al
     
    2
    		[O|(OH)
     
    2
    		|SiO
     
    4
    		]
    Reference: ["Western Massachusetts Mineral Localities" by Plante, A.R., Valley Geology Press, 1992]
  		•  Clinochlore ?
    (Mg,Fe
    2+
     
    		)
     
    5
    		Al[(OH)
     
    8
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: ["Western Massachusetts Mineral Localities" by Plante, A.R., Valley Geology Press, 1992]
  		•  Diopside ?
    CaMg[Si
     
    2
    		O
     
    6
    		]
    Reference: ["Western Massachusetts Mineral Localities" by Plante, A.R., Valley Geology Press, 1992]
  		•  Enstatite ?
    Mg
     
    2
    		[SiO
     
    3
    		]
     
    2
    Reference: ["Western Massachusetts Mineral Localities" by Plante, A.R., Valley Geology Press, 1992]
  		•  Epidote
    {Ca
     
    2
    		}{Al
     
    2
    		Fe
    3+
     
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    Reference: ["Western Massachusetts Mineral Localities" by Plante, A.R., Valley Geology Press, 1992]
  		•  Ferrohornblende
    ☐[Ca
     
    2
    		][Fe
    2+
    4
    		Al][(OH)
     
    2
    		|AlSi
     
    7
    		O
     
    22
    		]
    Reference: ["Western Massachusetts Mineral Localities" by Plante, A.R., Valley Geology Press, 1992]
  		•  Hedenbergite
    CaFe
    2+
     
    		[Si
     
    2
    		O
     
    6
    		]
    Reference: ["Western Massachusetts Mineral Localities" by Plante, A.R., Valley Geology Press, 1992]
  		•  Magnesite ?
    MgCO
     
    3
    Reference: ["Western Massachusetts Mineral Localities" by Plante, A.R., Valley Geology Press, 1992]
  		•  Magnetite
    Fe
    2+
     
    		Fe
    3+
    2
    		O
     
    4
    Reference: ["Western Massachusetts Mineral Localities" by Plante, A.R., Valley Geology Press, 1992]
  		•  Microcline
    K[AlSi
     
    3
    		O
     
    8
    		]
    Reference: ["Western Massachusetts Mineral Localities" by Plante, A.R., Valley Geology Press, 1992]
  		•  Muscovite
    KAl
     
    2
    		[(OH)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: ["Western Massachusetts Mineral Localities" by Plante, A.R., Valley Geology Press, 1992]
  		•  Quartz
    SiO
     
    2
    Reference: ["Western Massachusetts Mineral Localities" by Plante, A.R., Valley Geology Press, 1992]
  		•  Schorl
    [Na][Fe
    2+
    3
    		][Al
     
    6
    		][(OH)
     
    3
    		|OH|(BO
     
    3
    		)
     
    3
    		|Si
     
    6
    		O
     
    18
    		]
    Reference: ["Western Massachusetts Mineral Localities" by Plante, A.R., Valley Geology Press, 1992]
  		•  'Soapstone'
    Reference: []
  		•  Talc
    Mg
     
    3
    		Si
     
    4
    		O
     
    10
    		(OH)
     
    2
    Reference: ["Western Massachusetts Mineral Localities" by Plante, A.R., Valley Geology Press, 1992]
  		•  Titanite
    CaTi[O|SiO
     
    4
    		]
    Reference: ["Western Massachusetts Mineral Localities" by Plante, A.R., Valley Geology Press, 1992]
  		•  Tremolite ?
    ☐[Ca
     
    2
    		][Mg
     
    5
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
    Reference: [No reference listed]


    23 entries listed. 21 valid minerals.

    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: 1st Nov 2009 08:27:00