Calciojohillerite

Availability

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Size

4 x 3.5 x 3 cm - Miniature 

Formula

NaCaMg₃(AsO₄)₃ (RRUFF)

Locality

Tolbachik Volcano, Kamchatka, Russia

Tagged

arsenate

A more detailed locality is: Arsenatnaya fumarole, Second scoria cone of the Northern Breakthrough of the Great Tolbachik Fissure Eruption, Tolbachik volcano, Kamchatka, Russia. It is one of the few study specimens from Igor Pekov's collection used to characterize the new mineral. It is not yet published but was approved in 2016. 

The mineral is a greenish to yellowish (polychromatic) to almost colorless well-shaped, terminated crystals (about 1 mm) combined in clusters / crusts on basalt scoria altered by fumarolic gas. Very rich.

XRD Confirmed, EDS Confirmed, Type & Only Locality, Author's Material