Research output: Contribution to journal › Article
Ekplexite (Nb, Mo)S-2 center dot(Mg1-xAlx)(OH)(2+x), kaskasite (Mo, Nb)S-2 center dot(Mg1-xAlx)(OH)(2+x) and manganokaskasite (Mo, Nb)S-2 center dot(Mn1-xAlx)(OH)(2+x), three new valleriite-group mineral species from the Khibiny alkaline complex, Kola peninsula, Russia. / Pekov, I. V.; Yapaskurt, V. O.; Polekhovsky, Y. S.; Vigasina, M. F.; Siidra, O. I.
In: Mineralogical Magazine, Vol. 78, No. 3, 2014, p. 663-679.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Ekplexite (Nb, Mo)S-2 center dot(Mg1-xAlx)(OH)(2+x), kaskasite (Mo, Nb)S-2 center dot(Mg1-xAlx)(OH)(2+x) and manganokaskasite (Mo, Nb)S-2 center dot(Mn1-xAlx)(OH)(2+x), three new valleriite-group mineral species from the Khibiny alkaline complex, Kola peninsula, Russia
AU - Pekov, I. V.
AU - Yapaskurt, V. O.
AU - Polekhovsky, Y. S.
AU - Vigasina, M. F.
AU - Siidra, O. I.
PY - 2014
Y1 - 2014
N2 - Three new valleriite-group minerals, ekplexite (Nb, Mo)S-2 center dot(Mg1-xAlx)(OH)(2+x), kaskasite (Mo, Nb)S-2 center dot(Mg1-xAlx)(OH)(2+x) and manganokaskasite (Mo, Nb)S-2 center dot(Mg1-xAlx)(OH)(2+x) are found at Mt Kaskasnyunchorr, Khibiny alkaline complex, Kola Peninsula, Russia. They occur in fenite consisting of orthoclase-anorthoclase and nepheline with fluorophlogopite, corundum, pyrrhotite, pyrite, rutile, monazite-(Ce), graphite, edgarite, molybdenite, tungstenite, alabandite, etc. Ekplexite forms lenticular nests up to 0.2 mm x 1 mm x 1 mm consisting of near-parallel, radiating or chaotic aggregates of flakes. Kaskasite and manganokaskasite mainly occur as flakes and their near-parallel 'stacks' (kaskasite: up to 0.03 mm x 1 mm x 1.5 mm; manganokaskasite: up to 0.02 mm x 0.5 mm x 1 mm) epitaxially overgrow Ti-bearing pyrrhotite partially replaced by Ti-bearing pyrite. All three new minerals are opaque, iron-black, with metallic lustre. Cleavage is {001} perfect and mica-like. Flakes are very sof
AB - Three new valleriite-group minerals, ekplexite (Nb, Mo)S-2 center dot(Mg1-xAlx)(OH)(2+x), kaskasite (Mo, Nb)S-2 center dot(Mg1-xAlx)(OH)(2+x) and manganokaskasite (Mo, Nb)S-2 center dot(Mg1-xAlx)(OH)(2+x) are found at Mt Kaskasnyunchorr, Khibiny alkaline complex, Kola Peninsula, Russia. They occur in fenite consisting of orthoclase-anorthoclase and nepheline with fluorophlogopite, corundum, pyrrhotite, pyrite, rutile, monazite-(Ce), graphite, edgarite, molybdenite, tungstenite, alabandite, etc. Ekplexite forms lenticular nests up to 0.2 mm x 1 mm x 1 mm consisting of near-parallel, radiating or chaotic aggregates of flakes. Kaskasite and manganokaskasite mainly occur as flakes and their near-parallel 'stacks' (kaskasite: up to 0.03 mm x 1 mm x 1.5 mm; manganokaskasite: up to 0.02 mm x 0.5 mm x 1 mm) epitaxially overgrow Ti-bearing pyrrhotite partially replaced by Ti-bearing pyrite. All three new minerals are opaque, iron-black, with metallic lustre. Cleavage is {001} perfect and mica-like. Flakes are very sof
U2 - 10.1180/minmag.2014.078.3.14
DO - 10.1180/minmag.2014.078.3.14
M3 - Article
VL - 78
SP - 663
EP - 679
JO - Mineralogical Magazine
JF - Mineralogical Magazine
SN - 0026-461X
IS - 3
ER -
ID: 7031819