Rock Identifier
Likely iron-stained quartz or feldspar fragment (Quartz (SiO₂) or potassium feldspar (KAlSi₃O₈), uncertain from image) — mineral
mineral

Likely iron-stained quartz or feldspar fragment

Quartz (SiO₂) or potassium feldspar (KAlSi₃O₈), uncertain from image

AI-generated identification · may be incorrect

Tiny angular, orange-brown translucent fragment with a dull to vitreous luster; likely Mohs hardness 6–7, with indistinct cleavage if quartz or two cleavages if feldspar. The color probably comes from iron-oxide staining or weathering.

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Physical properties

Tiny angular, orange-brown translucent fragment with a dull to vitreous luster; likely Mohs hardness 6–7, with indistinct cleavage if quartz or two cleavages if feldspar. The color probably comes from iron-oxide staining or weathering.

Formation & geological history

Likely a weathered mineral grain derived from an igneous or metamorphic rock; its geological age cannot be determined from the photograph. Such grains commonly accumulate in soil, sediment, and decomposed bedrock.

Uses & applications

As an isolated grain it has negligible commercial value; quartz and feldspar are major industrial materials used in glass, ceramics, abrasives, and construction aggregates.

Geological facts

The specimen is too small and low-resolution for confident identification. A glass-scratch test, streak test, and examination for cleavage under magnification would help distinguish quartz from feldspar.

Field identification & locations

Commonly found in soils and stream sediments worldwide, especially in granitic terrains. Quartz has no cleavage and scratches glass; feldspar shows flat cleavage surfaces and is slightly softer.