Metamorphic, Likely Sedimentary With Quartz Veins

Shale or Slate with Quartz Veins

Shale (fine-grained clastic sedimentary rock) or Slate (low-grade metamorphic rock formed from shale) with Quartz (SiO2) veins

Sandstone with Quartz/Calcite druse

Arenite with druse (SiO2 or CaCO3)

Likely milky quartz

Quartz (silicon dioxide, SiO₂)

Small quartz-rich mineral fragment

Quartz (SiO₂), possibly milky or chalcedonic quartz

Milky quartz

Quartz (silicon dioxide, SiO₂)

Likely quartz-rich stone (possibly milky quartz or quartzite)

Quartz, silicon dioxide (SiO₂), or quartzite if interlocking grains are present

Rough amber-colored quartz or calcite fragment

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

Quartz vein fragment

Quartz, silicon dioxide (SiO₂), likely milky to translucent quartz with iron-oxide or clay inclusions

Milky quartz crystal cluster

Quartz (silicon dioxide, SiO₂)

Quartz (likely Rose or Milky Quartz)

Silicon Dioxide (SiO2)

Milky quartz fragment

Quartz (silicon dioxide, SiO₂)

Likely quartz-bearing rock fragment

Quartz (SiO₂), possibly with iron-oxide staining or other mineral inclusions

Pale quartz-rich stone, possibly calcite

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

Milky quartz in weathered host rock

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

Quartz fragment

Quartz (silicon dioxide, SiO₂)

Quartz pebble

Silicon dioxide (SiO2)

Quartz fragment

Quartz (silicon dioxide, SiO₂)

Quartz with iron staining

Silicon dioxide (SiO2)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Quartz Vein in Host Rock (Likely Slate or Shale)

Hydrothermal Quartz (SiO2) in Pelitic host rock

Milky quartz-rich rock

Quartz, SiO₂; possibly quartzite or massive vein quartz

Quartz-rich rock fragment

Milky quartz, primarily silicon dioxide (SiO₂), possibly quartzite or a feldspar-bearing vein rock

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Smoky Quartz and Biotite Schist

Quartz-Biotite Schist (SiO2 + K(Mg,Fe)3AlSi3O10(F,OH)2)

Biotite schist with quartz veins

Quartz–mica schist; primarily quartz (SiO₂), biotite mica, and feldspar

Likely milky quartz pebble

Quartz (silicon dioxide, SiO₂)

Weathered quartz-bearing rock, possibly calcite vein fragment

Indeterminate; likely quartz (SiO₂) with carbonate minerals such as calcite (CaCO₃)

Milky quartz-bearing rock, likely quartzite or silicified limestone

Quartz (SiO₂), possibly in a quartzite or chalcedony-rich matrix

Quartz-rich rock, possibly milky quartz or quartzite fragment

Quartz (SiO₂), potentially quartzite if metamorphic

Weathered quartz-rich pebble

Quartzite or silicified sandstone; predominantly microcrystalline quartz (SiO₂)

Likely weathered quartz-rich rock fragments

Uncertain; visually consistent with massive quartz or quartz-bearing sandstone

Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Quartz-rich pebble (likely milky quartz)

Quartz, SiO₂

Milky quartz

Quartz (silicon dioxide, SiO₂)

Tumbled quartz-rich stone, possibly milky quartz or calcite

Quartz (SiO₂) or calcite (CaCO₃); exact identification requires testing

Polished garnet-bearing metamorphic rock

Likely garnet mica schist or garnet-bearing gneiss; garnet is commonly almandine, Fe₃Al₂(SiO₄)₃

Quartzite Cobble

Metamorphic Quartzite (SiO2)

Milky quartz fragment

Quartz (silicon dioxide, SiO₂)

Yellow chalcedony or quartz fragment

Microcrystalline quartz, SiO₂ (tentative; possibly iron-stained chalcedony)

Specular Hematite with Quartz and Limonite

Hematite (Fe2O3) with Quartz (SiO2) and Limonite (FeO(OH)·nH2O)

Likely milky quartz fragment

Quartz (SiO₂)