Original paper
Re-examination of kochelite: A mixture of metamict fergusonite-(Y) and altered zircon
Janeczek, Janusz
Neues Jahrbuch für Mineralogie - Monatshefte Jg. 2004 Heft 5 (2004), p. 193 - 207
23 references
published: May 5, 2004
DOI: 10.1127/0028-3649/2004/2004-0193
ArtNo. ESP156200405001, Price: 29.00 €
Abstract
Kochelite, first described by Websky in 1868 as a new mineral from pegmatite in the Karkonosze granite, SW Poland was considered a product or products of alteration of Zr-rich fergusonite. An investigation of a topotype sample by optical microscopy, back scattered electrons imaging and electron microprobe analysis show that the name kochelite was applied to an artificial mixture of metamict fergusonite and chemically altered partially metamict zircon. A complex pattern of chemical alteration in both fergusonite and zircon occurred due to the action of alkaline hydrothermal solution during albitization of K-feldspars. The second stage of alteration was related to the weathering of the pegmatite.
Keywords
kochelite • fergusonite • zircon • pegmatite