SCOLECITE, carrière d'Odha, district de Nashik, division de Nashik, Maharashtra, INDE (très grande armoire)
La scolécite est un tectosilicate rare, classé dans le groupe des zéolites. C'est un silicate de calcium hydraté de formule chimique CaAl₂Si₃O₁₀·3H₂O. Elle ne contient que des traces de sodium et de potassium pouvant remplacer le calcium, tandis que le baryum, le strontium, le fer et le magnésium sont remarquablement absents. La scolécite présente une relation isostructurale avec la mésolite (zéolite sodique-calcique) et la natrolite (zéolite sodique), sans toutefois former une série chimique continue avec elles. Décrite pour la première fois en 1813, son nom dérive du grec σκώληξ (sko-lecks), signifiant « ver », en référence à son comportement lorsqu'il est exposé à la flamme d'un chalumeau.
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