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Garnet pyroxenite outcrops, Rizhao City, Rizhao Prefecture, Shandong Province, China

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Mantle wedge garnet clinopyroxenite layers in serpentinite in fault contact with gneisses.
Mantle slices faulted into subducted continental crust (Sulu UHP terrane).
Some pyrope megacrysts contain clinopyroxene inclusions showing exsolutions of garnet and ilmenite. The parental phase of this clinopyroxene is perhaps majorite from mantle transition zone (450 kms)

Ref.:
- Am. Min., V 88, pp. 1591-1600, 2003
- http://dunite.mr.nsysu.edu.tw/m02%20Liou-modified.doc.





Mineral List:
  		•  'Albite-Anorthite Series'
    Description: In veinlets (amphibolite facies), with amphibole, clinopyroxene and spinel.
    Reference: [http://dunite.mr.nsysu.edu.tw/m02%20Liou-modified.doc]
  		•  'Amphibole Group'
    Description: Secondary. Coats garnet megacrysts. Exsolution lamellae in clinopyroxene inclusions in pyrope.
    Reference: [http://dunite.mr.nsysu.edu.tw/m02%20Liou-modified.doc]
  		•  'Chlorite Group'
    Description: Secondary. Coats garnet megacrysts.
    Reference: [http://dunite.mr.nsysu.edu.tw/m02%20Liou-modified.doc]
  		•  'Clinopyroxene Subgroup'
    Description: Coats garnet megacrysts.
    Reference: [http://dunite.mr.nsysu.edu.tw/m02%20Liou-modified.doc]
  		•  Coesite
    SiO
     
    2
    Reference: [http://dunite.mr.nsysu.edu.tw/m02%20Liou-modified.doc]
  		•  Dolomite
    CaMg(CO
     
    3
    		)
     
    2
    Description: Inclusions in pyrope.
    Reference: [http://dunite.mr.nsysu.edu.tw/m02%20Liou-modified.doc]
  		•  Epidote
    {Ca
     
    2
    		}{Al
     
    2
    		Fe
    3+
     
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    Description: Coats garnet megacrysts.
    Reference: [http://dunite.mr.nsysu.edu.tw/m02%20Liou-modified.doc]
  		•  Forsterite
    Mg
     
    2
    		[SiO
     
    4
    		]
    Reference: [http://dunite.mr.nsysu.edu.tw/m02%20Liou-modified.doc]
  		•  Grossular
    Ca
     
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    Description: Matrix small garnets.
    Reference: [http://dunite.mr.nsysu.edu.tw/m02%20Liou-modified.doc]
  		•  Ilmenite
    Fe
    2+
     
    		TiO
     
    3
    Reference: [http://dunite.mr.nsysu.edu.tw/m02%20Liou-modified.doc]
  		•  Kyanite
    Al
     
    2
    		[O|SiO
     
    4
    		]
    Reference: [http://dunite.mr.nsysu.edu.tw/m02%20Liou-modified.doc]
  		•  Magnetite
    Fe
    2+
     
    		Fe
    3+
    2
    		O
     
    4
    Description: Lamellae with spinel or ilmenite in pyrope megacrysts. Coats garnet megacrysts.
    Reference: [http://dunite.mr.nsysu.edu.tw/m02%20Liou-modified.doc]
  		•  Pyrope
    Mg
     
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    Description: Megacrysts (up to 12 cm).
    Reference: [http://dunite.mr.nsysu.edu.tw/m02%20Liou-modified.doc]
  		•  Quartz
    SiO
     
    2
    Description: Replaces coesite.
    Reference: [http://dunite.mr.nsysu.edu.tw/m02%20Liou-modified.doc]
  		•  Rutile
    TiO
     
    2
    Description: Exsolution needles in some garnets.
    Reference: [http://dunite.mr.nsysu.edu.tw/m02%20Liou-modified.doc]
  		•  Spinel
    MgAl
     
    2
    		O
     
    4
    Description: Secondary.
    Reference: [http://dunite.mr.nsysu.edu.tw/m02%20Liou-modified.doc]


    16 entries listed. 12 valid minerals.

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