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Formula: (Fe,Ni)2P
Phosphide, florenskyite group,
nickel-bearing mineral
Crystal System: Orthorhombic
Specific gravity: 7.11 calculated
Hardness: 5 to 6
Colour: Light straw-yellow
Environments
Metamorphic environments
Meteorites
Allabogdanite is a primary phase in nickel-rich
ataxite meteorites, and it has also been found in
terrestrial pyrometamorphic rocks, possibly formed by transformation from the lower-pressure mineral
barringerite
(HOM).
Localities
At Halamish wadi, Hatrurim Basin, Tamar Regional Council, Southern District, Israel, the discovery of the
high-pressure mineral allabogdanite in the surficial pyrometamorphic rocks surrounding the Dead Sea basin is
the first terrestrial occurrence of the mineral previously found only in
iron meteorites
(AM 106.6.944-952).
Associated minerals include nickelphosphide,
schreibersite, awaruite,
graphite, barringerite and
diopside
(HOM).
The type locality, the Onello meteorite, Bol'shoy Dolguchan River, Onello River basin, Aldan shield, Sakha,
Russia, is a nickel-rich
ataxite iron meteorite. Allabogdanite occurs
as thin lamellar crystals up to 0.4 x 0.1 x 0.01 mm3 disseminated in plessite (an intergrowth of
taenite and kamacite). Associated
minerals are nickelphosphide,
schreibersite, awaruite and
graphite
(AM 87.1245-1249).
Allabogdanite from the Onello Meteorite -
Image
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