Hollingworthite

Formula: (Rh,Pt,Pd)AsS

Reflected/transmitted colour:

Pleochroism:

Optical isotropy/anisotropy:

Optical sign:

Refractive indices:

Birefringence δ:

2V angle:

Dispersion:

Optical orientation:

Optical axial plane:

Gray grain of hollingworthite (in the center of the picture) with very slightly darker gray laurite (at the right margin). Polished section (from microprobe analysis).
Origin: Konder Mine, Konder alkaline-ultrabasic massif, Aldan shield, Saha (Sakha) Republic (Yakutia), Eastern-Siberian Region, Russia
Picture size: 0.1 mm
Owner: Thomas Witzke
 

Photo courtesy of: 

Thomas Witzke

Institut für Mineralogie und Lagerstättenlehre
Aachen, Germany

 

Back to Alphabetical list Colour photos Physical, chemical and crystallographic description SEM images TEM images vibrational spectra description IR spectra Raman spectra N-IR spectra F-IR spectra IES spectra