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

Wishing Stone (Quartz-veined Sedimentary Pebble)

Silicified sedimentary rock with quartz vein (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Conglomerate

Clastic sedimentary rock (Psephite)

Conglomerate

Conglomerate Rock (Paraconglomerate)

Quartz Veinated Sandstone or Siltstone

Silicon Dioxide (SiO2) within a clastic sedimentary matrix

Likely weathered iron-rich quartz or chert

Microcrystalline quartz (SiO₂), possibly limonite/goethite stained

Weathered quartz-rich rock, possibly vein quartz

Quartz-rich rock; predominantly silicon dioxide (SiO₂), exact rock type uncertain from the photograph

Vein-bearing sandstone or quartzite cobble

Quartz-rich sandstone with white quartz veins; possibly metamorphosed to quartzite

Conglomerate

Conglomeratic Sandstone

Quartz-rich rock, likely milky quartz or quartzite

Quartz (SiO₂), possibly quartzite with iron-oxide staining

Polished leopard jasper (likely orbicular/rhyolitic jasper)

Silicified volcanic rock, mainly microcrystalline quartz (SiO₂), with iron-oxide and clay-rich inclusions

Quartz Pebble

Silicon Dioxide (SiO2)

Gravel / Small Pebble

Rock Fragment (Gravel)

Iron-rich breccia or weathered ironstone

Goethite–hematite-bearing ferruginous rock, possibly limonite

Carnelian (reddish chalcedony) with iron-stained host rock

Chalcedony, microcrystalline quartz (SiO₂), colored mainly by iron oxides

Purple Conglomerate

Polymictic Conglomerate

Brecciated Jasper

Silicon Dioxide (SiO2) with Hematite impurities

Concrete or artificial stone core sample

Artificial conglomerate

Iron-rich breccia or hematite-bearing jasper

Hematite–quartz jasper (silica-rich ironstone), possibly brecciated

Quartz Vein in Sandstone

Quartz (SiO2) in Clastic Sedimentary Rock

Conglomerate

Pebble Conglomerate / Clastic Sedimentary Rock

Quartz vein in dark host rock

Milky quartz (SiO₂) in an unidentified dark metamorphic host, possibly amphibolite or schist

Mixed rock and mineral specimen collection

Mostly undetermined from the photograph; apparent quartz-rich rocks, sandstone, granite/gneiss, and possibly iron-oxide-bearing specimens

Quartz-rich geode or vuggy quartz rock

Quartz (SiO₂), likely with minor iron oxides and possibly calcite or feldspar

Polished brecciated jasper (likely septarian or iron-rich jasper)

Microcrystalline quartz (chalcedony), SiO₂, with iron oxides and possibly calcite or other rock fragments

Weathered quartz-rich pebble

Likely massive quartz (SiO₂), possibly quartzite or silicified rock

Conglomerate

Conglomerate (clastic sedimentary rock type)

Quartz Pebble

Silicon Dioxide (SiO2)

Dark mineral nodule with white veining

Possibly a calcite-veined manganese- or iron-rich concretion; exact identification requires testing

Dragonstone (Brecciated Basalt/Diabase with Epidote and Quartz)

Brecciated mafic igneous rock

Iron-stained quartz or quartz-rich fragment

Quartz (SiO₂), possibly with limonite/goethite staining

Sandstone with Quartz Vein

Arenite with Quartz (SiO2) protrusion

Gray quartz-rich stone (possibly quartzite)

Quartzite, composed primarily of quartz (SiO₂); identification is uncertain from the image

Iron-rich breccia or weathered limonite-bearing rock

Goethite–limonite ironstone, possibly ferruginous breccia

Quartz-rich rock, likely milky quartz

Quartz (SiO₂), possibly massive vein quartz

Iron-stained quartz-rich breccia

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

Wishing Stone (Quartz Vein in Greywacke / Basalt)

Quartz vein in host rock (e.g. Meta-basalt or Greywacke)

Uncertain dark-and-white rock fragment

Likely a mixed lithic specimen, possibly quartz-bearing granite or ore; exact identification is not possible from the photograph

Weathered quartz-rich pebble

Likely milky quartz (SiO₂), possibly a quartz-rich vein fragment

Conglomerate

Conglomerate (Sedimentary rock containing rounded clasts)

White quartz fragment (probable)

Quartz, silicon dioxide (SiO₂)

Quartz-rich rock, possibly milky quartz with iron staining

Predominantly quartz (SiO₂); exact rock type cannot be confirmed visually