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Formula: BaCa6(SiO4)2(SO4)2O
Valence: BaCa6(SiO4)2(S6+O4)2O
Nesosilicate (insular SiO4 groups), zadovite group,
arctite supergroup
Crystal system: Trigonal (HOM has hexagonal)
Specific gravity: 3.39 calculated
Hardness: 4½
Streak: White
Colour: Colourless
Luminescence: Not fluorescent under UV
Environments
Volcanic igneous environments
Metamorphic environments
Localities
There are four co-type localities:
NW slope, Shadil-Khokh volcano, Kel’ volcanic area, South Ossetia, Georgia
W slope, Har Parsa, Hatrurim Basin, Tamar Regional Council, Beersheba Subdistrict, Southern District, Israel
Nahal Darga, Bethlehem Governorate, West Bank, Palestine
Jebel Harmun, Quds Governorate, West Bank, Palestine
Gazeevite was found as a high-temperature reaction product in a carbonate-silicate xenolith in
rhyodacites of the Shadil-Khokh volcano, Southern Ossetia,
Georgia, and at three localities in larnite pyrometamorphic rocks of the Hatrurim Complex: Nahal Darga and Jabel
Harmun, Judean Mountains, Palestinian Autonomy, and Har Parsa, Negev Desert, Israel.
Larnite,
fluorellestadite –
fluorapatite,
srebrodolskite –
brownmillerite and
mayenite supergroup minerals are the main common associates.
Gazeevite is colourless and transparent, with a white streak and vitreous lustre.
The formation of gazeevite and minerals of the
nabimusaite–dargaite series
is connected with high-temperature alteration of an early assemblage of clinker minerals affected by later fluids
generated by volcanic activity or combustion processes
(MM 81.3.499-513).
Gazeevite from Ossetia, Georgia -
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Gazeevite from Har Parsa, Israel -
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Gazeevite from Jebel Harmun, Palestine -
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