Arfvedsonite Polished Towers
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The listing is for (1 Pound)
Avg Size (3 to 4 inches) Sizes Vary Slightly
Material Origin: (USA)
Arfvedsonite is a fascinating and rare amphibole mineral known for its striking black color and significant, glassy luster. Its composition, characterized by sodium, iron, and magnesium, contributes to its dark hues and is often confused with other dark minerals such as black tourmaline (schorl) or biotite mica due to its similar appearance. The chemical formula of Arfvedsonite is (Na_3(Fe^{2+}, Mg)_4Fe^{3+}[Si_8O_{22}](OH)_2), indicating a complex structure with sodium, iron, magnesium, silicon, oxygen, and hydroxyl groups. Arfvedsonite forms in igneous rocks, particularly in nepheline syenites and related environments. It is associated with alkaline igneous complexes, where it can crystallize from sodium-rich magmas.
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Handmade items vary in size, shape, and color when selected randomly (the highest quality items are chosen first). They'll be as beautiful as those in the photos.
