Metamorphic, Likely Sedimentary With Quartz Veins

Likely quartz-rich rock fragments

Uncertain; probable quartz with iron-oxide staining, possibly mica-bearing metamorphic rock

Weathered quartz-bearing rock, possibly iron-stained quartzite or granitic pegmatite

Indeterminate; likely quartz-rich silicate rock with iron-oxide staining (SiO₂-dominant)

Orange Calcite

Calcium Carbonate (CaCO3)

Likely milky quartz pebble

Quartz (silicon dioxide, SiO₂)

Tumbled quartz pebble

Quartz (silicon dioxide, SiO₂)

Tumbled cream-colored stone, possibly quartz or calcite

Indeterminate from photograph; likely microcrystalline quartz (SiO₂) or calcite (CaCO₃)

Green aventurine (likely)

Quartz variety, SiO₂, colored commonly by fuchsite mica or chlorite

Quartz Vein in Matrix / Quartzite

Silicon Dioxide (SiO2) with host rock

Quartz-rich rock, possibly milky quartz with chlorite or epidote

Quartz (SiO₂), with unidentified green inclusions

Tumbled milky quartz (probable)

Quartz, SiO₂; likely massive/milky quartz

Pyrite (likely)

Iron disulfide, FeS₂; commonly called fool’s gold

Rough quartz (likely milky quartz)

Quartz, silicon dioxide (SiO₂)

Quartz (Milky and Smoky variety)

Silicon Dioxide (SiO2)

Quartzite River Cobble

Quartzite (dominated by SiO2)

Quartz (Milky Quartz)

Quartz (Silicon Dioxide, SiO2)

Tumbled yellow quartz (likely citrine)

Quartz, silicon dioxide (SiO₂), iron-colored variety

Tumbled milky quartz pebble

Quartz (silicon dioxide, SiO₂)

Iron-stained quartz-rich breccia

Quartz vein breccia with limonite/goethite staining; exact identification requires testing

Milky quartz

Quartz (silicon dioxide, SiO₂)

Tumbled milky quartz

Quartz, SiO₂

Small translucent mineral fragment, possibly calcite or quartz

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Iron-stained quartz crystal cluster

Quartz (SiO₂), likely iron-oxide-stained; exact variety uncertain

Likely weathered quartz or quartz-rich pebble

Quartz, silicon dioxide (SiO₂)

Tumbled white quartz pebble

Quartz (silicon dioxide, SiO₂)

Clear Quartz (Rock Crystal Fragments)

Silicon Dioxide (SiO2)

Tumbled milky quartz (likely quartzite or chalcedony)

Quartz, SiO₂; precise identification requires hardness or microscopic testing

Milky quartz fragment

Quartz (silicon dioxide, SiO₂), likely massive or vein quartz

Milky quartz

Quartz (silicon dioxide, SiO₂)

Raw milky quartz

Quartz (SiO₂), likely iron-stained quartz

Weathered iron-rich metamorphic rock

Likely iron-stained quartzite or metasedimentary rock; exact identification requires testing

Tumbled quartz-rich pebble

Quartz (SiO₂), possibly iron-stained or included quartz

Milky Quartz

Silicon Dioxide (SiO2)

Small tumbled quartz pebble (probable milky quartz)

Quartz, silicon dioxide (SiO₂)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Quartz-rich stone, possibly calcite or quartz

Likely quartz (SiO₂) or calcite (CaCO₃); exact identification requires testing

Banded gneissic rock

Gneiss, likely quartz–feldspar–biotite gneiss

Tumbled quartz pebble (probable milky quartz)

Quartz, silicon dioxide (SiO₂)

Likely milky quartz or quartz-rich rock

Quartz, silicon dioxide (SiO₂); exact identification is limited by the blurry image

Likely rough quartz-bearing mineral specimen

Quartz (silicon dioxide, SiO₂), possibly iron-stained quartz or quartz-rich rock

Tumbled milky quartz pebble

Quartz (SiO₂), likely milky quartz

Iron-stained quartz-rich rock, possibly quartzite or hydrothermal quartz

Quartz (SiO₂), likely with iron oxides; exact host rock uncertain from the photograph