mineral
Blue tumbled stone, possibly sodalite
Unidentified blue mineral; sodalite is a tentative visual match (Na₈(Al₆Si₆O₂₄)Cl₂)
AI-generated identification · may be incorrectSmall, dark-blue, polished piece with a reflective surface; the image does not show enough detail to determine hardness, cleavage, or crystal structure. Sodalite has Mohs hardness 5.5–6 and a vitreous to greasy luster.
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Physical properties
Small, dark-blue, polished piece with a reflective surface; the image does not show enough detail to determine hardness, cleavage, or crystal structure. Sodalite has Mohs hardness 5.5–6 and a vitreous to greasy luster.
Formation & geological history
If sodalite, it formed in silica-poor igneous rocks such as nepheline syenite; its age depends on the deposit. The image alone cannot confirm the mineral or geological age.
Uses & applications
Blue tumbled minerals are commonly sold for collecting and decoration; sodalite is also used for beads and ornamental objects.
Geological facts
Sodalite is often blue with white calcite veining, but no diagnostic veining is discernible here.
Field identification & locations
A clearer close-up showing color patterns and surface detail—or simple hardness and streak tests—is needed for identification. Sodalite occurs in Canada, Brazil, Namibia, and elsewhere.
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