Octahedral crystals of faujasite with opal spheres and coating. Exact species of faujasite not known. Ca, Mg and Na recorded (the latter two being Type Locality species). Width of view 5mm. Stack of 51 images....
Acquired by Joan Lamond in 2002 from Ann and Noel Kennon.
Predominantly blue and green thin opal seams.
Hyalite opal, Jim Daly, Sauktown Sales, Indiana
Hyalite? Sulphates? ex Bernie and Margaret Day Collection
Hyalite? Sulphates? ex Bernie and Margaret Day Collection
Prismatic and acicular topaz crystals, with opal coating tridymite, and also capping one of the topaz crystals, from the Conca Cannas quarry, Masullas, Mt. Arci, Oristano Province, Sardinia, Italy.
