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Ceylonite (first
cited 1793) and
pleonaste (first
cited 1801) or
pleonast are
dingy blue or grey to
black varieties of spinel. Ceylonite,
named for the...
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Gonioterma pleonastes is a moth of the
family Depressariidae. It is
found in
French Guiana. The
wingspan is
about 23 mm. The
forewings are
light greyish...
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faceted as the
luster of the gem will
produce appealing reflections.
Pleonaste (black spinel) and
black diamond are
examples of
opaque faceted gemstones...
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Almandine 0.027 0.013–0.016
Hessonite 0.027 0.013–0.015
Willemite 0.027 —
Pleonaste 0.026 —
Rhodolite 0.026 —
Boracite 0.024 0.012
Cryolite 0.024 — Staurolite...
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minerals is
named Gahnite: ZnAl2O4 Hercynite: FeAl2O4 Galaxite: MnAl2O4
Pleonaste: (Mg,Fe)Al2O4 Iron spinels: Cuprospinel: CuFe2O4 Franklinite: (Fe,Mn,Zn)(Fe...
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final /eɪst/ chaste, lambaste, paste,
taste /æst/ cineaste,
caste (GA),
pleonaste /ɑːst/ (out)caste (RP) /əsteɪ/
namaste -ci
unstressed before vowel /ʃ/...
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periscelta (Meyrick, 1915)
Gonioterma phortax Meyrick, 1915
Gonioterma pleonastes (Meyrick, 1915)
Gonioterma projecta (Meyrick, 1915)
Gonioterma seppiana...