Amableite-(Ce)

amableite-(Ce)

yofortierite

serandite

aegirine

Images

Formula: Na₁₅[(Ce_1.5Na_1.5)Mn₃]Mn₂Zr₃◻Si[Si₂₄O₆₉(OH)₃](OH)₂.H₂O
Cyclosilicate (ring silicate), eudialyte group
Crystal System: Trigonal
Specific gravity: 2.89 measured, 2.899 calculated
Hardness: 5
Colour: Yellow, pale orangish
Environments

Pegmatites

Amableite-(Ce) is a new mineral, approved in 2023 and to date (October 2024) reported only from the type locality.

Localities

At the type locality, the Demix-Varennes quarry, Saint-Amable sill, Varennes & St-Amable, Lajemmerais RCM, Montérégie, Quebec, Canada, amableite-(Ce) was discovered in a peralkaline pegmatite. The associated minerals are albite, microcline, aegirine, serandite, natrolite, yofortierite, and an unidentified titanosilicate forming minute grains. Amableite-(Ce) occurs as yellow equant or thick tabular crystals up to 2 mm across. (MM 88.4.369-379).
Amableite-(Ce) from the Demix-Varennes quarry - Image

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