Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
The tortured cubes are elongated along the "body diagonal" to cm or more. Specimens exist with .5 cm perfect cubes of argentite and a later growth of acanthite
Habit:
Tortured skeletal "cubes" that are not cubic, but monoclinic
Colour:
Black
Luminescent properties:
None
Quality for species:
Excellent - world class for species or very significant. (!!)
La Sirena Mine, Guanajuato, Guanajuato Municipality, Guanajuato, Mexico