mineral

Pale quartz-rich stone, possibly calcite

Likely quartz (SiO₂) or calcite (CaCO₃); image resolution prevents confident separation

AI-generated identification · may be incorrect

Creamy white, irregular granular specimen with a dull to vitreous luster; likely hardness 3 (calcite) or 7 (quartz), with no visible crystal faces or cleavage. Specific gravity is approximately 2.7 (calcite) or 2.65 (quartz).

Identified September 18, 2026More mineral →

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Physical properties

Formation & geological history

Could be a small fragment of quartz vein material, calcite vein material, or a pale weathered rock; formation age and setting cannot be determined from the photograph.

Uses & applications

Common quartz is used in glass, ceramics, electronics, and aggregate; calcite is used in cement, lime, and construction. This small specimen has negligible commercial value unless attractive under magnification.

Geological facts

Calcite effervesces with dilute hydrochloric acid, whereas quartz does not. Quartz scratches glass; calcite is easily scratched by a steel knife.

Field identification & locations

Test hardness and acid reaction, preferably on an inconspicuous spot; inspect for cleavage and crystal shape with magnification. Pale quartz and calcite occur widely in veins, sedimentary rocks, and metamorphic terrains.