Published in
Copernicus Publications, European Journal of Mineralogy, 1(27), p. 123-136, 2015
DOI: 10.1127/ejm/2015/0027-2420
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Mayenite supergroup, part III: Fluormayenite, Ca12Al14O32[〈4F2], and fluorkyuygenite, Ca12Al14O32[(H2O)4F2], two new minerals from pyrometamorphic rocks of the Hatrurim Complex, South Levant
,
Irina O. Galuskina,
Yevgeny Vapnik,
Mateusz Dulski,
Mikhail Murashko,
Piotr Dzierżanowski,
Viktor V. Sharygin,
Sergey V. Krivovichev,
Richard Wirth
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Abstract
Two new mineral species of the mayenite group, fluormayenite Ca12Al14O32[〈4F2] (I43d, a = 11.9894(2) Å, V = 1723.42(5) Å3, Z = 2) and fluorkyuygenite Ca12Al14O32[(H2O)4F2] (I43d, a = 11.966(2) Å, V = 1713.4(1) Å3, Z = 2), are major constituents of larnite pyrometamorphic rocks of the Hatrurim Complex (Mottled Zone) distributed along the Dead Sea rift on the territory of Israel, Palestinian Autonomy and Jordan. Holotype specimens of fluormayenite and fluorkyuygenite were collected at the Jabel Harmun, Judean Mts., Palestinian Autonomy and in the Hatrurim Basin, Negev Desert, Israel, respectively. Mineral associations of holotype fluormayenite and fluorkyuygenite are similar and include larnite, shulamitite, Cr-containing spinel-magnesioferrite series, ye'elimite, fluorapatite-fluorellestadite, periclase, brownmillerite, oldhamite as well as the retrograde phases portlandite, hematite, hillebrandite, afwillite, foshagite, ettringite, katoite and hydrocalumite. Fluormayenite and fluorkyuygenite crystals, usually