Radiating Graphite in the Kola Peninsula, Russia
Hakman Valley, Mt. Yukspor, Khibiny Massif
Graphite with a very unusual hollow fibrous, conical and tubular
morphologies occurs as cavity coatings and
in spherical aggregates in an alkaline pegmatite in the Hackman valley, Mt.
Yukspor, Khibiny Massif, Kola Peninsual, Russia. Associated minerals include
aegirine needles, apatite crystals, albite, nepheline, natrolite crystals.
Fibrous, radiating aggregates of graphite,
(to 7 mm diameter) in pegmatite.
J.A. Jaszczak collection and photo.
|Fibers are composed of hollow channels
of graphite, with walls of layered graphite
crystals. Tiny graphite cones and tubes are associated.
Field Emission Scanning Electron Microscope
|Aegirine in vuggy areas may be covered
richly with micro- to nano-scale cones and tubes
of graphite, as revealed in this FESEM image.
"Micro- and nano-scale graphite cones and tubes from Hackman Valley, Kola
Peninsula, Russia," J. A. Jaszczak, S. Dimovski,
S. A. Hackney, G. W. Robinson,
P. Bosio, and Y. Gogotsi. Canadian Mineralogist 45,
- "Nano- and micro-scale graphite cones and tubes from Hackman Valley,
Khibiny Massif, Kola Peninsula, Russia."
J. A. Jaszczak, S. A. Hackney, and S. Dimovski.
Proceedings of the technical session of the 32nd Rochester Mineralogical
Symposium, Rochester, New York, April 15, 2005.
Rocks and Minerals 82, 238-240 (2007).
© Copyright John A. Jaszczak
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