Glass Nugget (Tumbled Glass)
Amorphous Silicon Dioxide (SiO2) with additives
Category
Browse sedimentary (man made conglomerate) specimens identified by the Rock Identifier community.
Glass Nugget (Tumbled Glass)
Amorphous Silicon Dioxide (SiO2) with additives
Porcelain (Stoneware Ceramic)
Mullite / Silica-glass composite (Al6Si2O13)
Goldstone (Brown)
Aventurine glass
Chert (specifically Gray/Blue-Gray Chert)
Chert (SiO2)
Sandstone
Sedimentary Rock (Quartz Sandstone)
Aragonite Star Cluster
Aragonite (Calcium Carbonate, CaCO3)
Sandstone
Sedimentary Clastic Rock (Quartzose Sandstone)
River Rock (River Cobbles)
Fluvial Conglomerate Clasts (primarily composed of various minerals such as Quartz, SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Geode (Unopened)
Quartz Geode (SiO2) / Chalcedony Concretion
Botryoidal Hematite (Iron Stone Conglomerate)
Hematite (Fe2O3) in sedimentary matrix
Chert (Flint)
Microcrystalline Silica (SiO2)
Diamond
Carbon (C)
Diamond
Carbon (C)
Diamond
Carbon (C)
Diamond (Colorless/White)
Carbon (C)
Rough Corundum (Sapphire/Ruby mixture)
Corundum (Aluminum Oxide, Al2O3)
Chert (Flint/Chalcedony)
Silicon Dioxide (SiO2)
Brown Chert
Microcrystalline Quartz (SiO2)
Chert Arrowhead
Chert (Cryptocrystalline variety of Quartz, SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (Common Opal/Jasper variety)
Cryptocrystalline Quartz (SiO2)
Chert (and/or Flint)
Microcrystalline Quartz (SiO2)
Petoskey Stone
Hexagonaria percarinata (Fossilized Coral)
Chert (with nodule)
Microcrystalline Quartz (SiO2)
Chert (Nodule)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Chert (varieties include Flint and Mudstone)
Microcrystalline Silica (SiO2)
Chert
Microcrystalline quartz (SiO2)
Chert (Flint)
Chert (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (varietal Chalcedony or Flint)
Silicon dioxide (SiO2) - Microcrystalline Quartz
Chert (Flint)
Microcrystalline Quartz (SiO2)
Red Sandstone
Arenite (with Iron Oxide / Hematite staining)
River Rock
Sedimentary Rock (various compositions)
Sandstone (with iron staining)
Quartz Arenite / Ferruginous Sandstone
White Marble
Recrystallized Calcite (CaCO3)
Chert (Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
Red Jasper (or Ironstone/Jasper Conglomerate)
Microcrystalline Quartz with Hematite inclusions (SiO2 + Fe2O3)
Jasper (Iron-rich Chalcedony)
Jasper (Microcrystalline Silicon Dioxide, SiO2 plus iron oxide impurities)
Coarse-grained Jasper or Jasper Conglomerate
Silicon Dioxide with Iron Oxide (SiO2) + Fe2O3
Diamond
Carbon (C)