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Formula: (K,Na)3(Fe3+,Ti,Al,Mg)5O2(AsO4)5
Arsenate, titanium-bearing mineral
Crystal System: Orthorhombic
Environments
Achyrophanite is a relatively new mineral, approved in 2018 and to date (September 2023) reported only from
the type locality.
Localities
At the type locality, the Arsenatnaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption,
Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia,
khrenovite is associated with
aphthitalite group sulphates,
badalovite,
calciojohillerite,
nickenichite, johillerite,
tilasite, svabite,
achyrophanite, ,
pansnerite,
arsenatrotitanite,
anhydrite, sanidine,
hematite, cassiterite,
rutile and pseudobrookite
(MM 86.6.897–902).
Also at the type locality yurgensonite and a
tin-bearing variety of katiarsite
are associated closely with one another and with badalovite,
pansnerite, yurmarinite,
achyrophanite, arsenatrotitanite,
hatertite, khrenovite,
svabite, sanidine,
hematite, cassiterite,
rutile and
aphthitalite group sulphates
(MM 85.5.698–707).
Again, at the type locality, pansnerite is associated with
aphthitalite, hematite,
sanidine, badalovite,
khrenovite, achyrophanite,
arsenatrotitanite,
ozerovaite, tilasite,
calciojohillerite,
johillerite, nickenichite,
svabite, katiarsite,
yurmarinite, anhydrite,
rutile, cassiterite and
pseudobrookite
(MM 84.1.143–151)
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