
1) Zinc mineral
Found on
https://www.crosswordclues.com/clue/fraipontite

Fraipontite is a zinc aluminium silicate mineral with a formula of (Zn,Al)3(Si,Al)2O5(OH)4. It is a member of the kaolinite-serpentine mineral group and occurs as an oxidation product of zinc deposits. It occurs with smithsonite, gebhardite, willemite, cerussite and sauconite. It was first described in 1927 for an occurrence in Vieille Montagne, V...
Found on
http://en.wikipedia.org/wiki/Fraipontite
No exact match found.