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SYSTEMATIC of the MINERALS / SYSTEMATIK der MINERALE according to E.H. Nickel & M.C. Nichols (2007), H. Strunz & E.H. Nickel (2001) under construction !!!! 6. BORATES 6.G: Heptaborates and other Megaborates 6.GA. .... 6.GA.05. Boracite group
© Thomas Witzke / Stollentroll |
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