mineral

Tumbled lepidolite-rich pegmatite (probable)

Lepidolite, K(Li,Al)3(Si,Al)4O10(F,OH)2, in a granitic pegmatite matrix

AI-generated identification · may be incorrect

Hardness about 2.5–3.5 Mohs; lavender-gray, fine-granular, with a pearly to dull luster and indistinct mica cleavage. The rounded surface appears mechanically tumbled; pale spots may be quartz or feldspar.

Identified August 8, 2026More mineral →

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Physical properties

Formation & geological history

Likely formed in a late-stage, lithium-rich granitic pegmatite as mica crystallized from volatile-rich residual magma, generally in Precambrian to Phanerozoic intrusive bodies. Exact identification and age require mineralogical testing.

Uses & applications

Lepidolite is a minor lithium source and is popular in lapidary specimens, carvings, and metaphysical collections; this low-grade rounded piece has little industrial or jewelry use.

Geological facts

Lepidolite commonly occurs with quartz, feldspar, tourmaline, and spodumene in pegmatites. Its lavender color is associated with manganese and mica-rich composition.

Field identification & locations

Look for a micaceous, flaky texture, pearly cleavage surfaces, and a lilac color; a streak, hardness test, and microscope examination can distinguish it from lavender quartz or slag. Common localities include Brazil, Madagascar, Zimbabwe, and U.S. pegmatite districts.