Shattuckite Group
The Shattuckite group is a mineral group that includes Shattuckite, Plancheite, and other rare copper silicate minerals. Here's some information about the group:
- Chemical Formula: Cu5(Si2O6)2(OH)2
- Discovery: The Shattuckite mineral was discovered in 1915 in Bisbee, Arizona, USA by Albert F. Holden, who named it after the nearby Shattuck Mine. The Plancheite mineral was discovered in 1898 by Gustave Désiré Froment-Meurice and named after the French explorer Jules François Émile Planché.
- Physical Properties:
- Color: Blue, green, or blue-green
- Crystal System: Orthorhombic
- Hardness: 3.5-4
- Density: 3.5-4.3 g/cm3
- Cleavage: Perfect in one direction
- Optical Properties:
- Refractive Index: 1.70-1.78
- Birefringence: 0.030-0.040
- Pleochroism: Distinct
- Ranking of Rarity: Shattuckite and Plancheite are both considered to be rare minerals.
- Occurrence (Countries): Shattuckite is found in the USA, Namibia, the Democratic Republic of Congo, and Australia. Plancheite is found in the Democratic Republic of Congo, Zambia, and Namibia.
- Healing Properties: The Shattuckite group is believed to have healing properties that can help with communication, intuition, and spiritual awareness.
- Uses: The Shattuckite group is primarily used as a collector's mineral and in jewelry.
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