Ferruginous Quartz
Iron-stained Quartz (Silicon Dioxide, SiO2 with Fe2O3 inclusions)
mineral
Category
Mineral Description (Anthropogenic Material)
Browse mineral description (anthropogenic material) specimens identified by the Rock Identifier community.
Mookaite Jasper
Silicified Radiolarite (SiO2 with impurities)
sedimentary
Chlorastrolite (Greenstone)
Chlorastrolite (variety of Pumpellyite) - Ca2(Mg,Fe)Al2(SiO4)(Si2O7)(OH)2 · H2O
mineral
Thunderegg (Agetized Geode nodule)
Rhyolitic Agate Nodule (SiO2 filling volcanic cavities)
igneous
Synthetic Sapphire and Ion-X Glass
Single-crystal Alumina (Al2O3) and Ion-strengthened Aluminosilicate Glass
mineral
Greenstone / Epidosite
Epidosite (Metasomatic rock consisting mainly of Epidite Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH) and Quartz)
metamorphic
Sandstone (Quartzite Pebble)
Arenite (SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (likely Arkosic or Quartzose)
Sandstone (SiO2 dominated)
sedimentary
Sandstone (Quartzose)
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Calligraphy Stone
Mariam Jasper (Fossiliferous Limestone with Hematite and Iron)
sedimentary
Sandstone (Quartzose Sandstone)
Clastic Sedimentary Rock (Lithic arenite / Quartz arenite)
sedimentary
Red Jasper
Quartz (Silicon Dioxide) with Hematite inclusions, SiO2
mineral
Sandstone (with biological crust)
Arenite (SiO2 based)
sedimentary
Rough Diamond
Diamond (pure carbon, C)
mineral
Ferrous Slag (Iron Smelting By-product)
Fused Siliceous Slag
Anthropogenic Material (Man-made Rock)
Sea Glass (Kelly Green)
Amorphous Silica (Silicon Dioxide with Iron/Chromium additives)
Anthropogenic specimen (Man-made material)
Dalmatian Jasper
Dalmatian Stone (a microcrystalline quartz and feldspar rock with arfvedsonite)
igneous
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Sandstone (with potential trace fossils)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Diamond
Native Carbon (C)
mineral
Diamond
Carbon (C)
mineral
Ironstone Concretion (Iron-rich Mudstone)
Siderite / Geothite concretion (FeCO3 / FeO(OH))
sedimentary
Chert (Flint) with Glauconite
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Amygdaloidal Basalt
Amygdaloidal Basalt containing Zeolite or Quartz (SiO2/Silicates)
igneous
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Green Common Opal
Hydrated Silica (SiO2·nH2O)
mineral
Quartz / Common Agate
Silicon Dioxide (SiO2)
mineral
Sandstone (Ferruginous)
Sandstone (Clastic sedimentary rock, predominantly SiO2 with Fe2O3 cement)
sedimentary
Sandstone
Sandstone (lithified arenite/wacke)
Sedimentary Rock
Fluorite
Calcium Fluoride (CaF2)
mineral
Sandstone (Quartzose)
Arenite (composed primarily of SiO2)
sedimentary
Sandstone
Arenite/Quartz Arenite
sedimentary
Granite Pebble
Granite (composed primarily of Quartz, Feldspar, and Mica)
igneous
Jasper
Silicon Dioxide (SiO2)
sedimentary
Asphalt (Bituminous pavement fragment)
Artificial conglomerate / Bitumen-Aggregate mixture
sedimentary