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Mineralpedia Details for Calciojohillerite

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Calciojohillerite

Calciojohillerite

Formula
NaCaMg3(AsO4)3 
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Calciojohillerite from Tolbachik Volcano, Kamchatka, Russia

Calciojohillerite
            from Tolbachik Volcano, Kamchatka, Russia
Special Info
XRD Confirmed,EDS Confirmed,Type & Only Locality,Author's Material

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.

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