Hi Stew, from the following (not a geologist) I'd say yes if you can tell it's chalcopyrite - it's visible!
(Everything is on track and looking good.)
"PHYSICAL CHARACTERISTICS:
Color is brassy yellow, tarnishes to irredescent blues, greens, yellows and purples.
Luster is metallic.
Transparency: Crystals are opaque.
Crystal System is tetragonal; bar 4 2m
Crystal Habits are predominantly the disphenoid which is like two opposing wedges and resembles a tetrahedron.
Crystals sometines twinned. Also commonly massive, and sometimes botryoidal.
Cleavage is rather poor in one direction.
Fracture is conchoidal and brittle.
Hardness is 3.5-4
Specific Gravity is approximately 4.2 (average for metallic minerals)
Streak is dark green.
Other Characteristics: Some striations on most crystal faces.
Associated Minerals are quartz, fluorite, barite, dolomite, calcite, pentlandite, pyrite and other sulfides.
Notable Occurances include Chile, Peru, Mexico, Europe, South Africa, several USA sites and many others around
the world.
Best Field Indicators are crystal habit, tarnish, softness and brittleness."
from:
galleries.com |
