mineral

Probable mica-rich mineral cluster

Likely muscovite mica (KAl₂(AlSi₃O₁₀)(OH)₂); exact identification is uncertain from the photograph

AI-generated identification · may be incorrect

Small tan to silvery-brown cluster with reflective, sheet-like cleavage and a pearly to vitreous luster. If muscovite, hardness is 2–2.5 Mohs, with monoclinic crystals and perfect basal cleavage; composition and density cannot be confirmed visually.

Identified October 11, 2026More mineral →

Explore Probable mica-rich mineral cluster in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Muscovite commonly crystallizes in granitic pegmatites and forms during metamorphism of aluminum-rich rocks. Its age depends on the host rock and cannot be determined from the image.

Uses & applications

Mica is used as electrical and thermal insulation, in fillers and cosmetics, and as mineral specimens; this small piece has mainly educational or modest collecting value.

Geological facts

Mica’s perfect cleavage lets it split into thin, flexible sheets. Other minerals can also form pale, platy clusters, so a closer view or simple tests would improve identification.

Field identification & locations

Look for thin sheets that peel apart and shimmer; common sources include pegmatites and mica schists worldwide. Approximate value: $1–$10 for a small common specimen.