Rosell Minerales

You are in > Home > Minerals > Achtaragdite, hydrogrossular-chlorite-carbonate pseudomorph

Catálogo de minerales

RM2809   Achtaragdite, hydrogrossular-chlorite-carbonate pseudomorph

Akhtaragda River mouth, Vilyui River Basin, Mirninsky, Sakha Republic, Russia

Achtaragdite is a unique, rare and poorly understood pseudomorph, from this remote Siberian locality that is the Type Locality for grossular garnet. It is a variety of the grossular-hibschite garnet series and is (technically, according to mindat) a hydrogrossular-chlorite-carbonate pseudomorph after what was formerly considered to be wadalite or some other rare hydrogarnet. The real precursor mineral for these pseudomorphs is now considered to be helvite.

Size: 6 x 4.3 x 3.6 cm.
Main crystal: 3 x 2.2 cm.