mineral
Small quartz-rich rock fragments
Likely iron-stained quartz or quartzite; exact identification is uncertain from the image
AI-generated identification · may be incorrectCream, tan, and rusty-brown colors with an uneven, granular surface and little visible luster. Quartz has Mohs hardness 7 and a trigonal crystal structure; these fragments appear too small to assess cleavage or specific gravity reliably.
Identified More mineral →
Explore Small quartz-rich rock fragments in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Cream, tan, and rusty-brown colors with an uneven, granular surface and little visible luster. Quartz has Mohs hardness 7 and a trigonal crystal structure; these fragments appear too small to assess cleavage or specific gravity reliably.
Formation & geological history
Quartz-rich material forms in many settings, including silica veins and metamorphosed sandstone; iron oxides can create rusty staining. The specimen’s age and precise formation environment cannot be determined visually.
Uses & applications
Quartz is used in glass, ceramics, and electronics; attractive pieces may be used in crafts or collections. These small fragments have no evident commercial value.
Geological facts
Quartz is one of Earth’s most abundant minerals and commonly occurs in rocks of many geological ages.
Field identification & locations
Look for hardness (it can scratch glass), lack of cleavage, and a pale streak; iron staining alone does not identify the rock. Similar material occurs worldwide.
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
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
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