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Formula: Ca2V3+6Al6O20
Vanadate,
aenigmatite group of the
sapphirine supergroup
Crystal System: Triclinic
Specific gravity: 3.67 calculated
Environments
Beckettite is a relatively new mineral, approved in 2015 and to date reported only from the type locality.
Localities
At the type locality, the Allende meteorite, Pueblito de Allende, Chihuahua, Mexico, beckettite is a
refractory (heat resistant) mineral, occurring as micrometer-sized grains intergrown with
hibonite and perovskite, and
surrounded by secondary
grossular, anorthite,
coulsonite, hercynite and
corundum. It occurs within highly altered areas in a
vanadium-rich inclusion from the carbonaceous
chondrite.
Beckettite is a surrounded by primary high-temperature
mineral resulting from igneous crystallisation of a vanadium-rich melt,
together with vanadium-bearing
hibonite, perovskite,
burnettite, spinel and
paqueite
(Meteoritics & Planetary Science, 56 (in press)).
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