NEOBVYKLÁ SN-MINERALIZACE Z NYF PEGMATITU U KLUČOVA; TŘEBÍČSKÝ MASIV, MOLDANUBIKUM
Roč.12,(2005)
Sn-mineralisation was found in the NYF pegmatite near Klučov, in the Třebíč Massif. It fills small veinlets in albitized graphic or blocky K-feldspar zone. Two different mineral assemblages were distinguished: herzenbergite-varlamoffite-stokesite-cassiterite and cassiterite-varlamoffite-tinzenite. Lathy herzenbergite I crystals up to 2 mm were formed during primary crystallization from late hydrothermal fluids and their chemical composition correspond to SnS with small amount of Cu and Fe. Varlamoffite and stokesite form fine grained aggregates and their textural relationships suggest replacement of herzenbergite.
Třebíč Massif; NYF pegmatites; Sn-mineralisation; herzenbergite; stokesite; kassiterite
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