Latest Chalcopyrite Stories
VANCOUVER, Nov. 24, 2014 /PRNewswire/ - Amarc Resources Ltd.
VANCOUVER, Sept. 18, 2014 /PRNewswire/ - Amarc Resources Ltd.
VANCOUVER, Sept. 8, 2014 /PRNewswire/ - Sarama Resources Ltd.
VANCOUVER, April 29, 2014 /PRNewswire/ - Cayden Resources Inc.
Chalcopyrite is a copper iron sulfide mineral that crystallizes in the tetragonal system. It has chemical composition CuFeS2. It has a brassy to golden yellow color and hardness of 3.5 to 4 on the Mohs scale. Due to its color it is often confused with pyrite though this mineral has a cubic and not a tetragonal crystal system and chalcopyrite is more often massive and less brittle. Chalcopyrite is also a darker yellow in color. Chalcopyrite is one of the most important copper ores....
Pentlandite is a iron-nickel sulfide, (Fe,Ni)9S8. Pentlandite usually has a Ni:Fe ratio of close to 1:1. It also contains minor cobalt. Pentlandite forms isometric crystals, but is normally found in massive granular aggregates. It is brittle with a hardness of 3.5 - 4 and specific gravity of 4.6 - 5.0 and is non-magnetic. It has a yellowish bronze color. Pentlandite is the chief ore of nickel. Typically associated with pyrrhotite, niccolite, biotite, millerite, pyrite, and chalcopyrite...
- A transitional zone between two communities containing the characteristic species of each.