Quartz (in a rock matrix)
Quartz (SiO2)
Category
Browse sedimentary like (industrial composite) specimens identified by the Rock Identifier community.
Quartz (in a rock matrix)
Quartz (SiO2)
Sandstone (Water-worn)
Arenite
Sandstone (likely Quartzose Sandstone)
Arenite (composed primarily of SiO2)
Conglomerate
Conglomerate (Clastic sedimentary rock)
Conglomerate
Clastic sedimentary rock (Puddingstone)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Iron Oxide staining)
Sandstone (Calcareous Sandstone)
Calcareous Sandstone (primarily SiO2 with CaCO3 cement)
Sandstone (Quartzite-rich Pebble)
Arenite (primarily SiO2)
Sandstone (Banded)
Clastic Sedimentary Rock: Arenite
Conglomerate
Conglomerate (Sedimentary Clastic Rock)
Sandstone
Arenite (Siliclastic sedimentary rock)
Banded Chert
Silicon Dioxide (SiO2)
Banded Calcite (often sold as Onyx Marble)
Calcite (Calcium Carbonate, CaCO3)
Carnelian (Orange Chalcedony)
Silicon Dioxide (SiO2)
Gneiss
Gneiss
Gneiss
Gneiss (Metamorphic high-grade)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Sandstone
Arenite (predominantly Quartz Sandstone)
Crushed Stone (Basalt/Gabbro)
Mafic Igneous Rock (primarily Plagioclase and Pyroxene)
Amazonite
KAlSi3O8 (Potassium Aluminum Silicate) - a variety of Microcline Feldspar
Chert (and Limestone)
Silicon Dioxide (SiO2)
Rough Diamond
Diamond (Native Carbon, C)
Red Sandstone
Arenite (primarily Quartz and Iron Oxide)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Chert (Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (Jasper type)
Microcrystalline Quartz (SiO2)
Chert (containing Quartz)
Microcrystalline Silica (SiO2)
Chert (Red Jasper)
Silicon Dioxide (SiO2)
Jasper
Jasper (Silicified microcrystalline quartz) - SiO2
Chert / Flint
Silicon Dioxide (SiO2)
Quartz (Gray/Smoky Varieties)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Blue Kyanite
Kyanite (Al2SiO5)
Red Sandstone
Arenite (primarily Quartz with Hematite cement)
Limestone (specifically Fossiliferous Limestone)
Calcium Carbonate (CaCO3)
Ferruginous Sandstone
Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)
Sandstone (Ferruginous)
Arenite (with high iron oxide content)
Satin Spar (Selenite)
Calcium sulfate dihydrate (CaSO4·2H2O)
Concretion
Septarian Concretion (Clay-Ironstone Nodules)
Crinoid Columnal Fossil
Crinoid ossicle (Class Crinoidea)
Sandstone
Arenite (SiO2 principal)
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)