mineral
Polished feldspar-rich stone, possibly amazonite
Likely microcline feldspar (KAlSi₃O₈); identification is uncertain from the image
AI-generated identification · may be incorrectPale beige-gray, opaque, with a subdued polish and thin light veins; feldspar has Mohs hardness 6 and a triclinic crystal structure with two near-right-angle cleavages. The specimen’s exact luster, density, and composition cannot be confirmed visually.
Identified More mineral →
Explore Polished feldspar-rich stone, possibly amazonite in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Pale beige-gray, opaque, with a subdued polish and thin light veins; feldspar has Mohs hardness 6 and a triclinic crystal structure with two near-right-angle cleavages. The specimen’s exact luster, density, and composition cannot be confirmed visually.
Formation & geological history
If feldspar, it crystallized from silica-rich magma or pegmatitic fluids, commonly during the Precambrian; the specimen appears shaped and polished after formation.
Uses & applications
Feldspar is used in ceramics and glass; attractive varieties are cut or polished for ornaments and jewelry.
Geological facts
Microcline is a potassium-feldspar polymorph; amazonite is its green variety, whereas this specimen lacks the typical vivid green color.
Field identification & locations
Check hardness, cleavage, and a fresh surface; feldspar commonly occurs in granites and pegmatites worldwide. The visible pale veins and shape alone are not diagnostic.
More like this
Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Septarian Pebble
Septarian nodule / Concretion
sedimentary