metamorphic
Charoite
Charoite (Hydrated potassium sodium calcium barium strontium silicate hydroxyfluoride)
Hardness: 5-6 Mohs; Color: Lavender, lilac, to deep violet with black and white swirling patterns; Luster: Vitreous to pearly; Crystal structure: Monoclinic; Cleavage: Good; Specific Gravity: 2.54 - 2.58
- Hardness
- 5-6 Mohs
- Luster
- Vitreous to pearly
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Physical properties
Hardness: 5-6 Mohs; Color: Lavender, lilac, to deep violet with black and white swirling patterns; Luster: Vitreous to pearly; Crystal structure: Monoclinic; Cleavage: Good; Specific Gravity: 2.54 - 2.58
Formation & geological history
Formed via metasomatism, specifically by the alteration of limestone by alkaline intrusions. It is found in a unique geological setting known as the Murun Massif, occurring in the Yakutia region of Siberia, Russia.
Uses & applications
Used primarily in lapidary arts for cabochon jewelry, ornamental carvings, high-end decorative objects, and for geological or metaphysical collections.
Geological facts
Charoite is one of the rarest minerals on Earth as it is found in only one location globally: the Chara River area in Russia. It was first discovered in the 1940s but was not scientifically described until 1978.
Field identification & locations
Identify in the field by its distinct violet 'chatoyance' or swirling fibrous appearance which is not found in other minerals. Field identification is usually local to its single source in the Sakha Republic.
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