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Mineralpedia Details for Suredaite

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Suredaite

Suredaite

Named for the head of the Department of Mineralogy and Economic Geology at the University of Salta in Argentina, Ricardo Jose Sureda Leston. Found only at the type locality at the Oploca Vein System in Jujuy, Argentina where is occurs in layers in symmetrically banded veins in association with sphalerite, arsenopyite, cassiterite, cylindrite, franckeite, hocartite, and other minerals in the silver-tin ore. Suredaite appears as grey-black, opaque radial aggregates of tabular-prismatic or needle-like crystals.

Ref. Minerals and their Localities, Bernard, J.H. and Hyršl, J. (2004)

IMA/CNMNC List of Mineral Names (2009) and American Mineralogist 85 (2000), 1066

Formula
PbSnS3 
Crystal System
Orthorhombic 
Crystal Habit
Tabular, Prismatic 
Cleavage
Perfect, Perfect, Perfect 
Luster
Metallic 
Color
grayish black 
Streak
black 
Class
Orthorhombic - Dipyramidal 
Hardness
2.5-3 
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Suredaite from Pirquitas Ag-Sn Deposit, Rinconada Dept., Jujuy, Argentina

Suredaite
            from Pirquitas Ag-Sn Deposit, Rinconada Dept., Jujuy, Argentina Long, slender platy silvery crystals embedded in matrix to 3mm.
Click thumbnail images for larger view.

Suredaite from Oploca mine, Pirquitas, Rinconada Dept., Jujuy, Argentina

Suredaite
            from Oploca mine, Pirquitas, Rinconada Dept., Jujuy, Argentina Platy, elongated or blades embedded in matrix with somewhat divergent habit with metallic reflections easily seen in fine grained sulfosalt matrix.
Click thumbnail images for larger view.

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