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Granulite outcrop, Waldheim, Döbeln, Saxony, Germany

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(Granulitaufschluss, Waldheim, Döbeln, Sachsen, Deutschland)

Outcrop of a hydrothermally altered granulite, located just east of the Waldheim freight depot. Today inaccessible.
Located about 10 km SW of Döbeln.

Prismatine from this locality was considered as Kornerupine for a long time, before it was eventually recognised as a new mineral. Older specimens, therefore, may still be labelled as Kornerupine. The latter, however, does not occur here.

Ref.:
Grew, E.S., M.A. Cooper & F.C. Hawthorne (1996): Prismatine: Revalidation for boron-rich compositions in the kornerupine group. Mineralogical Magazine 60, 483-491.




Group 4 - Oxides and Hydroxides
  		• Corundum4.CB.05
    Al
     
    2
    		O
     
    3
      var: Ruby4.CB.05
    Al
     
    2
    		O
     
    3
  		• Spinel4.BB.05
    MgAl
     
    2
    		O
     
    4
    Group 9 - Silicates
  		• Dumortierite9.AJ.10
    (Al,Fe
    3+
     
    		)
     
    7
    		[O
     
    3
    		|BO
     
    3
    		|(SiO
     
    4
    		)
     
    3
    		]
  		• Prismatine (TL)9.BJ.50
    ([ ],Fe,Mg)(Mg,Al,Fe)
     
    5
    		Al
     
    4
    		Si
     
    2
    		(Si,Al)
     
    2
    		(B,Si,Al)(O,OH,F)
     
    22
  		• Sapphirine9.DH.45
    (Mg,Fe)
     
    4-x
    		Al
     
    4+x
    		[Al
     
    4+x
    		Si
     
    2-x
    		O
     
    18
    		]O
     
    2
  		• Schorl9.CK.05
    [Na][Fe
    2+
    3
    		][Al
     
    6
    		][(OH)
     
    3
    		|OH|(BO
     
    3
    		)
     
    3
    		|Si
     
    6
    		O
     
    18
    		]
    Unclassified Minerals
  		• 'Kryptotile'-
    AlSiO
     
    3
    		OH ?


    8 entries listed. 7 valid minerals.

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