of a Stigmaria from the Boss Point Formation (Pennsylvanian), Nova Scotia.
The brown colour of the burrow cover may be caused by pyritization
Huerta-Diaz MA, Morse JW (1992) Pyritization
of trace metals in anoxic marine sediments.
The Cu-Ni mineralization found at Peter Lake indicates a magmatic source (the presence of typical minerals such as: olivine, pentlandite, cobalt minerals, PGE with mechanical breccias is easily seen on outcrops) coupled with a hydrothermal enrichment demonstrated by the high Cu/Ni ratios and pyritization
(more than 10% pyrite).
The base of the unit forms a sharp lithological boundary with signs of pyritization
The sutures are rendered inaccurate not only by the distortion of pyritization
but also by the distortion inherent in reproduction via a camera lucida.
The broad zone of strong argillic alteration with associated quartz veinlet stockworks, silicification and pyritization
within which the GAMA and LAMA prospects occur, has been mapped over an area of 700 x 500 m and remains open in several directions.
These fossils, as a rule, are preserved in residues because of their (complete) pyritization
or they consist of phosphate (e.
Alteration in the area is composed of silicification, pyritization
, sericitization, alunite and pyrophyllite and is suggestive of a high sulfidation mineralizing system.
Raiswell R, Buckley K Berner RA, Anderson TF (1988) Degree of pyritization
of iron as a paleoenvironmental indicator of bottom-water oxyenation.
Hydrothermal alteration zones, quartz-pegmatite veins and veinlets and dykes of sub-volcanic origins with intensive silicification, pyritization
, and chloritization occur around the granodiorite stock body.
Paleoecology of the olenid trilobite Triarthrus: new evidence from Beecher's trilobite bed and other sites of pyritization