Images
Formula: NaCaCaMg2(AsO4)3
Anhydrous arsenate,
alluaudite group,
alluaudite supergroup
Crystal System: Monoclinic
Specific gravity: 3.811 calculated
Hardness: 3½
Colour: Brown, green
Environments
Paraberzeliite is a relatively new mineral, approved 2018, and to date (March 2022) reported only
from the type locality.
Localities
At the type locality, the Arsenatnaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure
eruption, Tolbachik volcano, Kamchatka Krai, Russia, paraberzeliite was found in the deepest zone,
associated with anhydrite,
diopside, hematite,
svabite, berzeliite,
schäferite,
calciojohillerite,
magnesioferrite,
ludwigite, fluorapatite,
powellite, baryte and
rhabdoborite group and
aphthitalite-group members. In the middle zone of the fumarole,
paraberzeliite occurs with hematite,
calciojohillerite,
badalovite, johillerite,
nickenichite, tilasite,
svabite,
fluorophlogopite,
sanidine, cassiterite,
anhydrite,
metathénardite and
belomarinaite. Paraberzeliite forms prismatic crystals up
to 0.2 mm × 0.2 mm × 1 mm often occurring in open-work aggregates
(MM 86.1.103-111).
Back to Minerals