54081.0 – Australian Rough Boulder Opal specimen with the whole side covered
It is, in mm: 80w x 30d x 45h and weight 131grams.
Pyrite with Calcite Crystals Zinc Corp Mine Broken Hill NSW Australia (EA11026)
Subsequent changes in fluid chemistry allowed siderite and calcite to crystallise in association with or slightly later than the pyrite, often occupying remaining voids or growing along crystal boundaries.
Australite Tektite, Sandpit nr Port Campbell. Victoria Australia (EA10445) Boxed
Presented in a display box, this is a striking and scientifically valuable example of Australia’s distinctive natural glass.
