Igneous, Metamorphic, And Sedimentary

Milky Quartz

Silicon Dioxide (SiO2)

Milky quartz vein with iron-oxide staining

Quartz (SiO₂), likely vein quartz stained by hematite/goethite

Milky quartz

Quartz, silicon dioxide (SiO₂)

Milky Quartz in Matrix

Silicon Dioxide (SiO2)

Quartz vein in host rock

Quartz (SiO₂), likely milky quartz; host rock is uncertain from the photo

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

White Quartz (Milky Quartz)

Quartz (Silicon Dioxide - SiO2)

Pebble (likely Quartz or Chert)

SiO₂ (Silicon Dioxide) - referring to the likely main mineral composition, Quartz. If it's chert, the scientific name remains SiO₂ with a microcrystalline structure.

Possibly citrine (yellow quartz)

Quartz, SiO₂; variety uncertain from the image

Tumbled quartz-rich stone, likely milky quartz

Quartz (SiO₂), possibly iron-stained milky quartz or quartzite

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky quartz with iron-oxide staining

Quartz (SiO₂), possibly massive vein quartz

Iron-stained quartz vein

Quartz (SiO₂) with iron-oxide/hydroxide staining, likely limonite/goethite

Quartz (Milky or Cloudy Quartz)

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Quartz (SiO₂)

Iron-stained milky quartz vein

Quartz (SiO₂), with reddish iron-oxide staining, likely hematite or goethite

Quartz-rich rock, likely milky quartz vein material

Mostly quartz (SiO₂); exact rock type cannot be determined from the image alone

Quartz (pebble)

Quartz (SiO₂)

Quartz (likely Rose Quartz or Milky Quartz based on color)

Quartz (SiO2 - Silicon Dioxide)

Milky quartz in weathered host rock

Quartz, SiO₂; likely a quartz vein in altered country rock

Polished smoky quartz pebble (probable)

Quartz, SiO₂; smoky coloration is caused by trace aluminum and natural irradiation

Milky quartz with iron staining

Quartz (SiO₂)

Quartz vein in host rock

Quartz (SiO₂), with possible feldspar or carbonate-bearing matrix

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz vein fragment

Milky quartz (SiO₂), possibly with weathered host rock

Milky quartz

Quartz (silicon dioxide, SiO₂)

Milky quartz

Quartz (silicon dioxide, SiO₂)

Likely weathered quartz-rich rock fragment

Uncertain; possibly quartz-bearing granitic or metamorphic material (SiO₂-dominant)

Quartz (Milky/Iron-stained)

Silicon Dioxide (SiO2)

Small pale mineral fragment

Unidentified; possibly quartz, calcite, or feldspar

Quartz

Quartz (SiO₂)

Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (likely Milky Quartz)

Quartz (SiO₂ - Silicon Dioxide)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Pebble)

Quartz (SiO₂)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz

SiO₂ (Silicon Dioxide)