Arfvedsonite with Anorthoclase – Moonstone Quarry, Wisconsin, USA
USD 79.00 USD
Specifications
| Country Of Origin | United States |
The contrast between the dark arfvedsonite and the light feldspar matrix is visually clear and typical of alkaline intrusive rocks from this locality. Arfvedsonite (Na₃(Fe²⁺,Fe³⁺)₄Si₈O₂₂(OH)₂) with Anorthoclase ((Na,K)AlSi₃O₈).