Metamorphic, Likely Sedimentary With Quartz Veins

Milky quartz fragment

Quartz (silicon dioxide, SiO₂)

Schist with Quartz Veins

Schist with Quartz (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz-rich rock, likely quartzite or quartz vein fragment

Quartz (SiO₂), possibly with iron-oxide staining and minor feldspar/mica

Tumbled quartz-rich stone, likely milky quartz or quartzite

Quartz (SiO₂), possibly quartzite if composed of interlocked quartz grains

Weathered quartz-rich metamorphic rock, likely quartzite

Quartzite (mostly microcrystalline quartz, SiO₂), possibly altered sandstone

Milky quartz (likely quartz fragment)

Quartz, silicon dioxide (SiO₂)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Weathered quartz-bearing rock, possibly mica schist or pegmatite

Quartz (SiO₂) with probable mica and feldspar; exact rock identification is uncertain from the photograph

Milky quartz with iron-oxide staining

Quartz, silicon dioxide (SiO₂), likely partially translucent massive quartz

Polished/tumbled pale gray stone, likely quartz-rich river pebble

Probably quartzite or microcrystalline quartz (SiO₂); exact identification requires testing

Milky quartz (rough quartz fragment)

Quartz, silicon dioxide (SiO₂)

Milky quartz

Quartz (silicon dioxide, SiO₂)

Quartz-rich rock, possibly milky quartz vein material

Quartz (SiO₂), likely with iron-oxide staining and minor host-rock inclusions

Tumbled milky quartz

Quartz (silicon dioxide, SiO₂)

Weathered brown rock, likely sandstone or iron-rich quartzite

Indeterminate; probable quartz-rich sandstone (quartz, feldspar, iron oxides)

Clear quartz crystal (likely quartz bead/specimen)

Quartz, silicon dioxide (SiO₂)

Tumbled cream-colored quartz pebble

Quartz (silicon dioxide, SiO₂), likely milky quartz

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Raw quartz (likely milky or smoky quartz)

Quartz, SiO₂

Crushed Limestone and Calcite

Calcium Carbonate (CaCO3)

Quartz-rich vein rock, likely milky quartz with iron staining

Quartz (SiO₂), possibly quartz vein material with minor iron oxides and feldspar

Quartz-bearing dark rock, possibly hornfels or basalt

Probable quartz–feldspar rock; exact identification requires testing

Mottled quartz pebble

Quartz (SiO₂), likely iron-oxide-stained milky quartz

Quartz-veined dark metamorphic rock

Likely quartz-mica schist or foliated basalt with a quartz vein

Weathered quartz-rich rock, possibly milky quartz or quartzite

Quartz (SiO₂), likely in a quartzite or silicified matrix

Tumbled milky quartz (likely quartzite or quartz pebble)

Quartz, silicon dioxide (SiO₂); exact rock type is uncertain from the image

Milky quartz vein rock

Quartz-rich hydrothermal vein; primarily quartz (SiO₂), with minor iron oxides and possibly feldspar or mica

Quartz-veined metamorphic rock, likely quartzite or schist

Quartz-rich metamorphic rock with a milky-quartz vein; exact host rock is indeterminate from the photo

Pyrite-bearing rock (likely pyrite-rich ore)

Pyrite, FeS₂, in a fine-grained host rock

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz Crystal

Silicon Dioxide (SiO2)

White Quartz

Silicon Dioxide (SiO2)

White Quartz

Silicon Dioxide (SiO2)

Quartz-veined metamorphic rock, likely greenschist or altered basalt

Chlorite–actinolite schist or metabasalt with a milky quartz vein

Tumbled quartz pebble

Quartz (SiO₂), likely colorless or milky quartz

Quartz (Milky Variant)

Silicon Dioxide (SiO2)