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  • Thumbnail for Nepheline syenite
    biotite or greenish augite, much apatite and in some cases, olivine. Ditroite: Ditroite derives its name from Ditrau, Transylvania, Romania. It is essentially...
    18 KB (2,131 words) - 15:06, 22 April 2023
  • Thumbnail for Ottó Herman
    also collected minerals and is noted for his findings of syenite és a ditroite. Due to the growing domestic and international prestige, was soon offered...
    14 KB (1,528 words) - 23:42, 31 May 2024