Sedimentary Rock (Possibly Conglomerate Or Breccia With A Quartz Vein)

Quartz-veined Greywacke

Silicon dioxide (SiO2) in Lithic Sandstone

Iron-stained quartz-rich rock, possibly weathered granite or pegmatite

Quartz–feldspar rock with iron-oxide alteration; exact identification is uncertain from the photograph

Wishing Stone (Quartz-veined Metamorphic/Sedimentary Rock)

Quartz Vein in Greywacke/Slate (SiO2 in host rock)

Puddingstone

Conglomerate

Banded quartz-rich rock (possibly pegmatite)

Likely quartz–feldspar pegmatite; identification is tentative from the photo

Unidentified translucent mineral fragment, possibly quartz

Likely quartz (SiO₂), though the photograph is insufficient for confident identification

Quartz-rich rock, possibly milky quartz

Quartz (silicon dioxide, SiO₂), possibly with feldspar or mica inclusions

Quartz-rich vein rock, possibly gold-bearing quartz

Massive quartz (SiO₂), with probable iron-oxide and sulfide staining; exact identification requires testing

Conglomerate

Conglomeratic Sandstone

River Rock / Stream Pebble

Fluvial Clast / Rounded Sedimentary Particle

Quartz-rich rock, likely quartzite or quartz vein fragment

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

Conglomerate

Conglomeratic Sandstone

Quartz Geode (likely within Limestone or Dolomite matrix)

Quartz (SiO₂)

Likely gold-bearing quartz vein rock

Quartz (SiO₂), possibly with native gold and iron sulfides/oxides

Likely quartz-rich rock fragment

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

Jasper Conglomerate

Polymictic Conglomerate with Jasper and Quartz

Quartz Pebble

Silicon Dioxide (SiO2)

Hag Stone

Perforated Quartz Pebble / Sedimentary Rock

Conglomerate

Conglomerate (SiO2, Al2O3, Fe2O3, CaCo3)

Likely quartz-rich stone, possibly milky quartz or chalcedony

Quartz (SiO₂), possibly microcrystalline chalcedony

Quartz with Host Rock

SiO2 (Quartz) with fine-grained Matrix

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

Quartz (SiO₂), possibly quartzite or a quartz vein fragment

Quartz-rich rock, likely milky quartz or quartzite

Quartz (SiO₂); possibly quartzite, a recrystallized quartz sandstone

Conglomeratic Sandstone

Clastic Sedimentary Rock

Gneiss with Quartz Vein

Metamorphic Gneiss with Quartz (SiO2) and Feldspar Injection

Quartz-rich rock, likely milky quartz

Quartz (silicon dioxide, SiO₂), possibly a quartzite fragment

Chalcedony breccia (possibly agate with drusy quartz)

Microcrystalline quartz, SiO₂, with crystalline quartz and dark matrix/inclusions

Milky quartz (rough quartz specimen)

Quartz, silicon dioxide (SiO₂)

Quartz-rich rock, likely milky quartz or quartzite

Quartz (SiO₂), possibly in a quartzite or hydrothermal vein matrix

Sandstone with Quartz Vein

Arenite with SiO2 intrusion

Quartz-rich vein rock, possibly milky quartz in altered host rock

Quartz (SiO₂), likely with weathered silicate minerals and iron/manganese staining

Quartzite (possibly iron-stained brecciated quartzite)

Quartz-rich metamorphic rock; chiefly SiO₂ with iron-oxide staining and minor accessory minerals

Likely quartz-rich stone or pale feldspar fragment

Indeterminate; possibly quartz (SiO₂) or feldspar (KAlSi₃O₈–NaAlSi₃O₈)

Iron-rich breccia

Hematite–goethite-rich ferruginous breccia, likely a lateritic ironstone

Quartz-rich rock fragment

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

Iron-stained quartz-rich rock, possibly brecciated jasper or chalcedony

Quartz (SiO₂) with iron-oxide minerals, likely limonite/goethite; exact identification is uncertain from the image

Iron-stained quartz-rich rock, possibly weathered granite or quartzite

Indeterminate quartz–feldspar aggregate with iron-oxide staining; likely granitic or hydrothermal material

Red jasper or hematite-rich rock

Red jasper (microcrystalline quartz, SiO₂) with hematite (Fe₂O₃)

Conglomerate (Greenstone/Pebble Conglomerate)

Polymictic Conglomerate

Copper-bearing basalt or volcaniclastic rock

Cuprite–malachite-bearing mafic volcanic rock; likely basalt with copper sulfides/oxides

Sandstone and Conglomerate pebbles

Sedimentary clastic rock

Weathered quartz-rich rock, likely milky quartz/quartzite

Quartz (SiO₂); possibly quartzite if metamorphosed sandstone