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Slättåkra (Alseda) quartz quarry, Slättåkra, Alseda, Vetlanda, Småland, Sweden

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(Slättåkra (Alseda) kvartsbrott)

Granite pegmatite from around 1840. Quartz and feldspar quarry, closed in 1920. Feldspar crystals more than 1 m in size and 15 cm large pyrite balls were found. C.W. Blomstrand found Euxenite here.
Earlier called Alseda pegmatite.




Group 2 - Sulphides and Sulfosalts
  		• Chalcopyrite2.CB.10a
    CuFeS
     
    2
  		• Molybdenite2.EA.30
    MoS
     
    2
  		• Pyrite2.EB.05a
    FeS
     
    2
  		• Pyrrhotite2.CC.10
    Fe
     
    7
    		S
     
    8
    		, (-4M), also given as Fe
     
    1-x
    		S (x = 0 - 0.2)
    Group 4 - Oxides and Hydroxides
  		• Anatase4.DD.05
    TiO
     
    2
  		• Euxenite-(Y)4.DG.05
    (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)
     
    2
    		O
     
    6
  		• Hematite4.CB.05
    Fe
     
    2
    		O
     
    3
  		• Ilmenite4.CB.05
    Fe
    2+
     
    		TiO
     
    3
  		• Magnetite4.BB.05
    Fe
    2+
     
    		Fe
    3+
    2
    		O
     
    4
  		• Polycrase-(Y)4.DG.05
    (Y,U)(Ti,Nb)
     
    2
    		O
     
    6
  		• Quartz4.DA.05
    SiO
     
    2
  		• Thorianite4.DL.05
    ThO
     
    2
  		• Uraninite4.DL.05
    UO
     
    2
    Group 7 - Sulphates, Chromates, Molybdates and Tungstates
  		• Jarosite7.BC.10
    KFe
    3+
     
     
    3
    		[(OH)
     
    3
    		|SO
     
    4
    		]
     
    2
    Group 8 - Phosphates, Arsenates and Vanadates
  		• Xenotime-(Y)8.AD.35
    YPO
     
    4
    Group 9 - Silicates
  		• Allanite-(Ce)9.BG.05
    {CaCe}{Al
     
    2
    		Fe
    2+
     
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
  		• Allanite-(Y)9.BG.05
    {CaY}{Al
     
    2
    		Fe
    2+
     
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
  		• Anorthite9.FA.35
    Ca[Al
     
    2
    		Si
     
    2
    		O
     
    8
    		]
  		• Biotite9..
  		• Clinochlore
    var: Ripidolite    		9.EC.55
    (Mg,Fe,Al)
     
    6
    		(Si,Al)
     
    4
    		O
     
    10
    		(OH)
     
    8
  		• Epidote9.BG.05
    {Ca
     
    2
    		}{Al
     
    2
    		Fe
    3+
     
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
  		• Microcline9.FA.30
    K[AlSi
     
    3
    		O
     
    8
    		]
  		• Muscovite9.EC.15
    KAl
     
    2
    		[(OH)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
  		• Thorogummite9.AD.30
    (Th,U)[(OH)
     
    4x
    		|(SiO
     
    4
    		)
     
    1-x
    		]
  		• Titanite9.AG.15
    CaTi[O|SiO
     
    4
    		]
      var: Yttrian Titanite9.AG.15
    (Ca,Y)TiSiO
     
    5
  		• Zircon9.AD.30
    Zr[SiO
     
    4
    		]
    Unclassified Minerals
  		• 'Albite-Anorthite Series'-
  		• Leucoxene-
  		• 'Sericite'-


    30 entries listed. 25 valid minerals.

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