Stracherite

stracherite

brownmillerite

shulamitite

ariegilatite

Images

Formula: BaCa6(SiO4)F2[(PO4)(CO3)]F
Nesosilicate (insular SiO4 groups), zadovite group, arctite supergroup, barium-bearing mineral
Crystal System: Trigonal
Specific gravity: 3.365 calculated
Hardness: 5
Streak: White
Colour: Colourless
Luminescence: Not fluorescent under UV
Environments

Metamorphic environments

Stracherite is a relatively new mineral, approved in 2017 and to date (December 2023) reported only from the Hatrurim formation.

Localities

At the type locality, the Hatrurim Formation, Middle East, stracherite occurs in pyrometamorphic spurrite marble and is formed under the influence of by-products (gases, fluids) of combustion metamorphism. Associated minerals include spurrite, calcite, brownmillerite, shulamitite, CO3-bearing fluorapatite, fluormayenite-fluorkyuygenite, ariegilatite, periclase, brucite, barytocalcite, baryte and elbrusite-kerimasite garnets (HOM).

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