mineral

Likely amazonite-bearing feldspar specimen

Amazonite, a green variety of microcline feldspar (KAlSi₃O₈), with pale feldspar or quartz matrix

AI-generated identification · may be incorrect

The visible blue-green blocky area and cream-colored material suggest feldspar; microcline has Mohs hardness 6–6.5, vitreous luster, and two near-right-angle cleavages. The small, partly obscured specimen makes identification uncertain.

Identified October 10, 2026More mineral →

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Physical properties

Formation & geological history

Amazonite forms in potassium-rich granitic pegmatites as magma cools slowly; specimens may be Precambrian or younger depending on locality. The image does not establish its source or age.

Uses & applications

Amazonite is used for beads, carvings, and decorative stone; feldspar is also an important industrial raw material in glass and ceramics.

Geological facts

Despite its vivid color, amazonite’s green hue is associated with trace lead and water-related defects in its crystal structure, rather than copper.

Field identification & locations

Look for opaque blue-green color, blocky crystals, and two cleavages meeting close to 90°; common sources include Colorado, Madagascar, Brazil, and Russia. A closer view or hardness/cleavage tests would help confirm the identification.