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Myoukenyama (Myokensan), Hitachiohta City, Ibaraki Prefecture, Kanto Region, Honshu Island, Japan

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Lithium-rich pegmatite. Mining for feldspar was attempted in 1960s, but was not profitable. Now abandoned. Collecting prohibited.





Mineral List:
  		•  Albite
    Na[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [Alfredo Petrov collection; Matsubara et al (1995) Mineralogical Journal, 17, 338-345]
  		•  Beryl
    Be
     
    3
    		Al
     
    2
    		Si
     
    6
    		O
     
    18
    Reference: []
  		•  Columbite-(Mn)
    (Mn,Fe)(Nb,Ta)
     
    2
    		O
     
    6
    Reference: []
  		•  Elbaite
    [Na][(Li,Al)
     
    3
    		][Al
     
    6
    		][(OH)
     
    3
    		|OH|(BO
     
    3
    		)
     
    3
    		|Si
     
    6
    		O
     
    18
    		]
    Description: Both pink and green varieties occur here.
    Reference: [Alfredo Petrov collection]
  		•  Lepidolite
    Reference: [Alfredo Petrov collection; Matsubara et al (1995) Mineralogical Journal, 17, 338-345]
  		•  Microlite
    (Ca,Na)
     
    2
    		Ta
     
    2
    		O
     
    6
    		(O,OH,F)
    Reference: [Matsubara et al (1995) Mineralogical Journal, 17, 338-345. ]
  		•  Montebrasite
    LiAl[(OH,F)|PO
     
    4
    		]
    Reference: [Sakurai et al (1977) Ganseki-Koubutsu-Koshogaku Zasshi, 72, 13-27.]
  		•  Pollucite
    (Cs,Na)
     
    2
    		[Al
     
    2
    		Si
     
    4
    		O
     
    12
    		] · 2H
     
    2
    		O
    Description: massive
    Reference: [Sakurai et al (1977) Ganseki-Koubutsu-Koshogaku Zasshi, 72, 13-27.]
  		•  Quartz
    SiO
     
    2
    Reference: [Alfredo Petrov collection; Matsubara et al (1995) Mineralogical Journal, 17, 338-345]
  		•  Spodumene
    LiAl[Si
     
    2
    		O
     
    6
    		]
    Reference: [Sakurai et al (1977) Ganseki-Koubutsu-Koshogaku Zasshi, 72, 13-27]
  		•  Stibiotantalite
    Sb(Ta,Nb)O
     
    4
    Reference: [Matsubara et al (1995) Mineralogical Journal, 17, 338-345.]
  		•  Tantalite-(Fe)
    FeTa
     
    2
    		O
     
    6
    Reference: [Matsubara, S. & Miyawaki, R. (2006) Catalogue of Japanese Minerals (National Science Museum)]
  		•  Tantalite-(Mn)
    MnTa
     
    2
    		O
     
    6
    Reference: [Sakurai et al (1977) Ganseki-Koubutsu-Koshogaku Zasshi, 72, 13-27]
  		•  'Tourmaline
    var: Rubellite'
    Reference: [Alfredo Petrov collection]
  		•  'Tourmaline
    var: Verdelite'
    Reference: [Alfredo Petrov collection]
  		•  Trilithionite
    K(Li,Al)
     
    3
    		[(F,OH)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [Kataoka & Uehara (2000) Koubutsu-Gakkai Kou'en-Youshi, 101.]
  		•  Uranmicrolite
    (U,Ca,Ce)
     
    2
    		(Ta,Nb)
     
    2
    		O
     
    6
    		(OH,F)
    Reference: [Matsubara et al (1995) Mineralogical Journal, 17, 338-345]
  		•  Zircon
    Zr[SiO
     
    4
    		]
    Reference: []


    18 entries listed. 15 valid minerals.

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