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Munchon Mine, Pungha-myon, Munchon-gun, South Hamgyong Province, North Korea

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Wolframite-bearing quartz veins cut granite; a 6km-long perigranitic pegmatite dyke intrudes surrounding biotite-gneiss, augen-gneiss and amphibolite of the Matenrei system. During WW2, 55 tons of lepidolite were mined as lithium ore. Six quarries were located along the length of the dyke.




Group 4 - Oxides and Hydroxides
  		• Quartz4.DA.05
    SiO
     
    2
    Group 8 - Phosphates, Arsenates and Vanadates
  		• Amblygonite8.BB.05
    LiAl[(F,OH)|PO
     
    4
    		]
    Group 9 - Silicates
  		• Albite9.FA.35
    Na[AlSi
     
    3
    		O
     
    8
    		]
  		• Biotite9..
  		• Microcline9.FA.30
    K[AlSi
     
    3
    		O
     
    8
    		]
  		• Muscovite9.EC.15
    KAl
     
    2
    		[(OH)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
  		• Schorl9.CK.05
    [Na][Fe
    2+
    3
    		][Al
     
    6
    		][(OH)
     
    3
    		|OH|(BO
     
    3
    		)
     
    3
    		|Si
     
    6
    		O
     
    18
    		]
  		• Spodumene9.DA.30
    LiAl[Si
     
    2
    		O
     
    6
    		]
  		• Zinnwaldite9.EC.20
    KLiFe
    2+
     
    		Al[(F,OH)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
    Unclassified Minerals
  		• 'Amphibole Group'-
  		• Columbite-
    (Fe,Mn)(Nb,Ta)
     
    2
    		O
     
    6
  		• Lepidolite-
  		• Phengite-
  		• 'Tourmaline
    var: Rubellite'    		-
      'var: Verdelite'-
  		• Wolframite-
    (Fe
    2+
     
    		)WO
     
    4
     
     
    		to (Mn
    2+
     
    		)WO
     
    4


    16 entries listed. 7 valid minerals.

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