Quartz "cast" after Calcite Kay Robertson Medium yellow-green color and decent

Medium yellow-green color and decent gemminess make this a worthwhile representative piece from this famous discovery

the Natrolite is often dissolved away with hydrochloric acid in order to expose the Benitoites hidden within

and in his communication with my father mentioned that “Cerite” on the piece may actually be Bastnasite

Specimen # WWMIX111903

as the main group of Calcite is damage free on the display side

Quartz "cast" after Calcite Kay Robertson Medium yellow-green color and decentThese specimens are some of the most classic Quartz after Calcite "casts" from any world locality. They are sometimes called epimorphs or perimorphs depending upon who you ask. With that said, this specimen is a fantastic example showing the perfect scalenohedral form of the previous Calcite crystals which were replaced, being coated by very small, almost "sugary", gem quality, colorless Quartz crystals. The Calcite crystals were then dissolved away