Canadian Mineralogist Yol.22, pp. 487-491 (1984) JASKoLSKIITE FROM IZOK LAKE, NORTHWEST ERRITORIES

A second ocourence of jaskdlskiite has been found in the massive zinc-copper-lead sulfide deposit at Izok Lake, Nortlwest Territories. The mineral occurs as lath-shaped crystals up to 150 x 3 @ pm. in galena associated with pyrite, pyrrhotite, marcasite, chalcopyrite, tetrahedrite and native bismutt...

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Bibliographic Details
Main Authors: Donald C. I{arris, Andrew, C. Roberts, Alan J. Criddle
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Subjects:
Pb2+rculsb
Bi)z-Ss
with Sb&gt
Bi
r=0.15. Keywords
ja
sk6lskiite
Pb-Cu-Sb-Bi sulfosalt
Izok Lake
Northwest Territories
reflectance data
microprobe analysis
X-ray
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.627.8244
http://rruff.info/doclib/cm/vol22/CM22_487.pdf
Description
Summary:A second ocourence of jaskdlskiite has been found in the massive zinc-copper-lead sulfide deposit at Izok Lake, Nortlwest Territories. The mineral occurs as lath-shaped crystals up to 150 x 3 @ pm. in galena associated with pyrite, pyrrhotite, marcasite, chalcopyrite, tetrahedrite and native bismuttr. In reflected, plane-polarized light the mineral is strongly bteflectant from greenish grey to greenish white, with no reflectance pleochroism. It is strongly anisotropic. I4tN5o 148-185. Reflectance spectra and color values for tlree grains are zupplied. The structural cell is orthorhomb^ic with dimensions: a 11.31(l), b 19.79Q), c 4.087(4) A. Two space gxoups are possible: Pbnn al:.d Pbn21,!:he strongest six lines of the X-ray powder pattern td in A 0)(h kt)) u e: 2.7 5 | (l 00X30 I, 24 l, 3 I 1), 3.73(90X1 50,?4,3 l0)

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