mineral

Tumbled purpurite (probable)

Purpurite, (Mn,Fe)PO₄; visual identification is uncertain from the photo

AI-generated identification · may be incorrect

Opaque, vivid magenta-purple with dark mottling and a polished surface. Purpurite is typically massive rather than visibly crystalline; hardness about 4–4.5 Mohs, vitreous to dull luster, and specific gravity roughly 3.2–3.4.

Identified September 29, 2026More mineral →

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Physical properties

Formation & geological history

Forms as a secondary manganese-iron phosphate through alteration of phosphate minerals in granitic pegmatites. Its age depends on the host deposit and cannot be determined from appearance.

Uses & applications

Collected as a colorful mineral and sometimes cut or polished into cabochons and beads; it is too soft and uncommon for major industrial use.

Geological facts

The name comes from Latin *purpura*, meaning purple. Similar purple stones and dyed materials can resemble purpurite, so confirmation may require mineral testing.

Field identification & locations

Look for opaque purple material with black or brown areas, often in phosphate-rich pegmatites; notable sources include Namibia and the United States. A small polished stone like this commonly sells for about $5–$30, depending on authenticity and quality.