Ericaite

ericaite

danburite

boracite

kieserite

Images

Formula: Fe²⁺₃B₇O₁₃Cl
Anhydrous borate containing halogen, boracite group, orthorhombic paramorph of trigonal congolite, forms a series with boracite.
Specific gravity: 3.22
Hardness: 7 to 7½
Streak: White
Colour: Purple, Light green, Red, Black, Brown.
Common impurities: Mg,Mn²⁺
Environments

Evaporite deposits

Ericaite is an uncommon constituent of marine evaporite deposits (HOM).

Localities

At the Alto Chapare mining district, Chapare Province, Cochabamba, Bolivia, ericaite is associated with danburite and boracite (HOM).

Ericaite is found in several potassium salt deposits in the southern Harz mountains, Lower Saxony, Germany, in halite-anhydrite and halite-anhydrite-kieserite rock (AM 41.372).

At the type locality, the Riedel Potash Works, Hänigsen, Uetze, Hanover Region, Lower Saxony, Germany, ericaite is associated with halite, sylvite, anhydrite and kieserite (HOM).

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