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Lavenite.

Оглавление

(Mn,Ca,Fe)(ZrOF)Na(SiO₃)₂? ZrO₂ = 28·8-31·6%.

Monoclinic; habit prismatic.

G = 3·51-3·55. H = 6. Brown to yellow; translucent.

Langesund Fiord, Norway; the Ardennes, France.

The Rare Earths: Their Occurrence, Chemistry, and Technology

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