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Adularia and byssolite - Saint-Christophe-en-Oisans, Isère, France - Thumbnail No. 96

€25.00

Tax included

A well-defined and intact adularia single crystal, 3 cm in size, displaying a beautiful white to very pale green hue. Its faces are well-developed with a soft, pearly luster. On its main face, the crystal is associated with a small amount of byssolite with a fine, fibrous texture, which accentuates its relief.

3 x 2.5 x 1.1 cm

Highlights of this specimen:

- An adularia crystal approximately 3 cm in size, a good size for this locality.
- A well-defined and intact single crystal.
- Crystal faces with a soft, pearly luster.
- Association with byssolite.

For your information:

Adularia is a variety of potassium feldspar belonging to the orthoclase group. It is particularly characteristic of alpine fissure environments, where it can form well-separated crystals, sometimes associated with quartz, albite, epidote, anatase, or various fibrous minerals.

Saint-Christophe-en-Oisans is one of the most renowned localities in French mineralogy. Discoveries there remain relatively rare today and require extensive prospecting in the mountains. Specimens from this locality are prized by collectors for their aesthetic appeal and the prestige of their provenance.