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 Salmi agates are characterized by specific red-brownish coloration. The colour likely results from chromogenic Fe-oxides compounds disseminated within the agate matrix. The agate nodules often exhibit concentrically zoning patterns. Some of them are characterized by distinct coarse (1−2 cm) and fine (from few micrometres) banding, poor-fancy agate varieties are also widespread. Frequently agates contain large calcite and/or quartz crystals. Aggregations of chlorite inclusions were commonly observed in the contact area to the host rock.
Habit:
The agates are characterized by diverse textures and frequently exhibited concentric zoning patterns. The vein agates most often have a poor-fancy texture pattern.
